{"id":50352,"date":"2025-07-30T23:06:53","date_gmt":"2025-07-30T15:06:53","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/50352.html"},"modified":"2025-07-30T23:06:53","modified_gmt":"2025-07-30T15:06:53","slug":"python%e7%bc%96%e7%a8%8b%e4%b9%8bpyqt5-%e4%bb%8e%e5%85%a5%e9%97%a8%e5%88%b0%e7%b2%be%e9%80%9a%ef%bc%9a%e5%85%a8%e9%9d%a2%e8%bf%9b%e9%98%b6%e6%8c%87%e5%8d%97_%e9%99%84%e4%bb%a3%e7%a0%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/50352.html","title":{"rendered":"Python\u7f16\u7a0b\u4e4bPyQt5 \u4ece\u5165\u95e8\u5230\u7cbe\u901a\uff1a\u5168\u9762\u8fdb\u9636\u6307\u5357_\u9644\u4ee3\u7801"},"content":{"rendered":"

Python\u7f16\u7a0b\u4e4bPyQt5 \u4ece\u5165\u95e8\u5230\u7cbe\u901a：\u5168\u9762\u8fdb\u9636\u6307\u5357_\u9644\u4ee3\u7801<\/h2>\n

\u76ee\u5f55<\/h3>\n
  • PyQt5\u7b80\u4ecb\u4e0e\u73af\u5883\u642d\u5efa<\/li>\n
  • \u7b2c\u4e00\u4e2aPyQt5\u7a0b\u5e8f<\/li>\n
  • PyQt5\u57fa\u7840\u7ec4\u4ef6<\/li>\n
  • \u5e03\u5c40\u7ba1\u7406<\/li>\n
  • \u4fe1\u53f7\u4e0e\u69fd\u673a\u5236<\/li>\n
  • \u5e38\u7528\u63a7\u4ef6\u8be6\u89e3<\/li>\n
  • \u5bf9\u8bdd\u6846\u4e0e\u6d88\u606f\u6846<\/li>\n
  • \u4e3b\u7a97\u53e3\u4e0e\u83dc\u5355\u680f<\/li>\n
  • \u7ed8\u56fe\u4e0e\u56fe\u5f62\u89c6\u56fe<\/li>\n
  • \u591a\u7ebf\u7a0b\u7f16\u7a0b<\/li>\n
  • \u6570\u636e\u5e93\u8fde\u63a5<\/li>\n
  • \u6837\u5f0f\u8868\u4e0e\u4e3b\u9898\u5b9a\u5236<\/li>\n
  • \u6253\u5305\u4e0e\u53d1\u5e03<\/li>\n
    \n

    1. PyQt5\u7b80\u4ecb\u4e0e\u73af\u5883\u642d\u5efa<\/h3>\n

    PyQt\u662fQt\u6846\u67b6\u7684Python\u7ed1\u5b9a，Qt\u662f\u4e00\u4e2a\u8de8\u5e73\u53f0\u7684C++\u56fe\u5f62\u7528\u6237\u754c\u9762\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u6846\u67b6\u3002PyQt5\u652f\u6301Python3.x\u7248\u672c\u3002<\/p>\n

    \u5b89\u88c5\u65b9\u6cd5：<\/p>\n

    pip install<\/span> PyQt5
    \npip install<\/span> PyQt5-tools # \u53ef\u9009，\u5305\u542bQt Designer\u7b49\u5de5\u5177<\/span><\/p>\n

    \u9a8c\u8bc1\u5b89\u88c5：<\/p>\n

    import<\/span> PyQt5
    \nprint<\/span>(<\/span>PyQt5.<\/span>__version__)<\/span> # \u6253\u5370PyQt5\u7248\u672c<\/span><\/p>\n

    \n

    2. \u7b2c\u4e00\u4e2aPyQt5\u7a0b\u5e8f<\/h3>\n

    # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – PyQt5\u7b2c\u4e00\u4e2a\u793a\u4f8b\u7a0b\u5e8f<\/span><\/p>\n

    import<\/span> sys
    \nfrom<\/span> PyQt5.<\/span>QtWidgets import<\/span> QApplication,<\/span> QLabel,<\/span> QWidget<\/p>\n

    # \u521b\u5efa\u5e94\u7528\u5bf9\u8c61，sys.argv\u662f\u547d\u4ee4\u884c\u53c2\u6570\u5217\u8868<\/span>
    \napp =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span><\/p>\n

    # \u521b\u5efa\u4e00\u4e2a\u7a97\u53e3<\/span>
    \nwindow =<\/span> QWidget(<\/span>)<\/span>
    \nwindow.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u7b2c\u4e00\u4e2aPyQt5\u7a0b\u5e8f'<\/span>)<\/span> # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898<\/span>
    \nwindow.<\/span>setGeometry(<\/span>100<\/span>,<\/span> 100<\/span>,<\/span> 280<\/span>,<\/span> 80<\/span>)<\/span> # \u8bbe\u7f6e\u7a97\u53e3\u4f4d\u7f6e\u548c\u5927\u5c0f(x,y,width,height)<\/span><\/p>\n

    # \u521b\u5efa\u4e00\u4e2a\u6807\u7b7e\u63a7\u4ef6<\/span>
    \nlabel =<\/span> QLabel(<\/span>'\u6b22\u8fce\u6765\u5230\u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2\u5b66\u4e60PyQt5!'<\/span>,<\/span> parent=<\/span>window)<\/span>
    \nlabel.<\/span>move(<\/span>60<\/span>,<\/span> 30<\/span>)<\/span> # \u79fb\u52a8\u6807\u7b7e\u4f4d\u7f6e<\/span><\/p>\n

    # \u663e\u793a\u7a97\u53e3<\/span>
    \nwindow.<\/span>show(<\/span>)<\/span><\/p>\n

    # \u8fdb\u5165\u5e94\u7528\u7684\u4e3b\u4e8b\u4ef6\u5faa\u73af，\u7b49\u5f85\u7528\u6237\u64cd\u4f5c<\/span>
    \nsys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

    \u4ee3\u7801\u89e3\u6790：<\/p>\n

  • QApplication：\u7ba1\u7406GUI\u5e94\u7528\u7a0b\u5e8f\u7684\u63a7\u5236\u6d41\u548c\u4e3b\u8bbe\u7f6e<\/li>\n
  • QWidget：\u6240\u6709\u7528\u6237\u754c\u9762\u5bf9\u8c61\u7684\u57fa\u7c7b<\/li>\n
  • QLabel：\u7528\u4e8e\u663e\u793a\u6587\u672c\u6216\u56fe\u50cf<\/li>\n
  • exec_()：\u8fdb\u5165\u4e3b\u4e8b\u4ef6\u5faa\u73af<\/li>\n
    \n

    3. PyQt5\u57fa\u7840\u7ec4\u4ef6<\/h3>\n

    \u6309\u94ae(QPushButton)\u793a\u4f8b<\/h4>\n

    # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – PyQt5\u6309\u94ae\u793a\u4f8b<\/span><\/p>\n

    from<\/span> PyQt5.<\/span>QtWidgets import<\/span> QApplication,<\/span> QWidget,<\/span> QPushButton,<\/span> QVBoxLayout
    \nimport<\/span> sys<\/p>\n

    class<\/span> MyWindow<\/span>(<\/span>QWidget)<\/span>:<\/span>
    \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
    \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
    \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

    def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
    \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898\u548c\u5927\u5c0f<\/span>
    \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u6309\u94ae\u793a\u4f8b'<\/span>)<\/span>
    \n self.<\/span>setGeometry(<\/span>100<\/span>,<\/span> 100<\/span>,<\/span> 300<\/span>,<\/span> 200<\/span>)<\/span><\/p>\n

    # \u521b\u5efa\u4e00\u4e2a\u5782\u76f4\u5e03\u5c40<\/span>
    \n layout =<\/span> QVBoxLayout(<\/span>)<\/span><\/p>\n

    # \u521b\u5efa\u6309\u94ae1<\/span>
    \n btn1 =<\/span> QPushButton(<\/span>'\u6309\u94ae1'<\/span>,<\/span> self)<\/span>
    \n btn1.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>on_btn1_click)<\/span> # \u8fde\u63a5\u70b9\u51fb\u4fe1\u53f7\u5230\u69fd\u51fd\u6570<\/span><\/p>\n

    # \u521b\u5efa\u6309\u94ae2<\/span>
    \n btn2 =<\/span> QPushButton(<\/span>'\u6309\u94ae2'<\/span>,<\/span> self)<\/span>
    \n btn2.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>on_btn2_click)<\/span><\/p>\n

    # \u5c06\u6309\u94ae\u6dfb\u52a0\u5230\u5e03\u5c40\u4e2d<\/span>
    \n layout.<\/span>addWidget(<\/span>btn1)<\/span>
    \n layout.<\/span>addWidget(<\/span>btn2)<\/span><\/p>\n

    # \u8bbe\u7f6e\u7a97\u53e3\u7684\u5e03\u5c40<\/span>
    \n self.<\/span>setLayout(<\/span>layout)<\/span><\/p>\n

    def<\/span> on_btn1_click<\/span>(<\/span>self)<\/span>:<\/span>
    \n print<\/span>(<\/span>'\u6309\u94ae1\u88ab\u70b9\u51fb\u4e86 – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

    def<\/span> on_btn2_click<\/span>(<\/span>self)<\/span>:<\/span>
    \n print<\/span>(<\/span>'\u6309\u94ae2\u88ab\u70b9\u51fb\u4e86 – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

    if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
    \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
    \n window =<\/span> MyWindow(<\/span>)<\/span>
    \n window.<\/span>show(<\/span>)<\/span>
    \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

    \n

    4. \u5e03\u5c40\u7ba1\u7406<\/h3>\n

    PyQt5\u63d0\u4f9b\u591a\u79cd\u5e03\u5c40\u7ba1\u7406\u5668：<\/p>\n

      \n
    • QVBoxLayout：\u5782\u76f4\u5e03\u5c40<\/li>\n
    • QHBoxLayout：\u6c34\u5e73\u5e03\u5c40<\/li>\n
    • QGridLayout：\u7f51\u683c\u5e03\u5c40<\/li>\n
    • QFormLayout：\u8868\u5355\u5e03\u5c40<\/li>\n<\/ul>\n

      \u7f51\u683c\u5e03\u5c40\u793a\u4f8b：<\/p>\n

      # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u7f51\u683c\u5e03\u5c40\u793a\u4f8b<\/span><\/p>\n

      from<\/span> PyQt5.<\/span>QtWidgets import<\/span> (<\/span>QApplication,<\/span> QWidget,<\/span> QPushButton,<\/span>
      \n QGridLayout,<\/span> QLabel)<\/span>
      \nimport<\/span> sys<\/p>\n

      class<\/span> GridLayoutExample<\/span>(<\/span>QWidget)<\/span>:<\/span>
      \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
      \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
      \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

      def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
      \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898<\/span>
      \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u7f51\u683c\u5e03\u5c40\u793a\u4f8b'<\/span>)<\/span><\/p>\n

      # \u521b\u5efa\u7f51\u683c\u5e03\u5c40<\/span>
      \n grid =<\/span> QGridLayout(<\/span>)<\/span>
      \n self.<\/span>setLayout(<\/span>grid)<\/span><\/p>\n

      # \u521b\u5efa\u6309\u94ae\u5e76\u6dfb\u52a0\u5230\u7f51\u683c\u4e2d<\/span>
      \n names =<\/span> [<\/span>'1'<\/span>,<\/span> '2'<\/span>,<\/span> '3'<\/span>,<\/span> '4'<\/span>,<\/span> '5'<\/span>,<\/span> '6'<\/span>,<\/span> '7'<\/span>,<\/span> '8'<\/span>,<\/span> '9'<\/span>]<\/span><\/p>\n

      positions =<\/span> [<\/span>(<\/span>i,<\/span> j)<\/span> for<\/span> i in<\/span> range<\/span>(<\/span>3<\/span>)<\/span> for<\/span> j in<\/span> range<\/span>(<\/span>3<\/span>)<\/span>]<\/span><\/p>\n

      for<\/span> position,<\/span> name in<\/span> zip<\/span>(<\/span>positions,<\/span> names)<\/span>:<\/span>
      \n button =<\/span> QPushButton(<\/span>name)<\/span>
      \n grid.<\/span>addWidget(<\/span>button,<\/span> *<\/span>position)<\/span><\/p>\n

      # \u6dfb\u52a0\u4e00\u4e2a\u8de8\u8d8a\u591a\u5217\u7684\u6807\u7b7e<\/span>
      \n label =<\/span> QLabel(<\/span>'\u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – 3×3\u7f51\u683c\u5e03\u5c40'<\/span>)<\/span>
      \n grid.<\/span>addWidget(<\/span>label,<\/span> 3<\/span>,<\/span> 0<\/span>,<\/span> 1<\/span>,<\/span> 3<\/span>)<\/span> # \u7b2c4\u884c，\u8de8\u8d8a3\u5217<\/span><\/p>\n

      if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
      \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
      \n ex =<\/span> GridLayoutExample(<\/span>)<\/span>
      \n ex.<\/span>show(<\/span>)<\/span>
      \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

      \n

      5. \u4fe1\u53f7\u4e0e\u69fd\u673a\u5236<\/h3>\n

      \u4fe1\u53f7(Signal)\u548c\u69fd(Slot)\u662fQt\u7684\u6838\u5fc3\u673a\u5236，\u7528\u4e8e\u5bf9\u8c61\u95f4\u7684\u901a\u4fe1\u3002<\/p>\n

      \u81ea\u5b9a\u4e49\u4fe1\u53f7\u793a\u4f8b：<\/p>\n

      # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u81ea\u5b9a\u4e49\u4fe1\u53f7\u793a\u4f8b<\/span><\/p>\n

      from<\/span> PyQt5.<\/span>QtCore import<\/span> pyqtSignal,<\/span> QObject
      \nfrom<\/span> PyQt5.<\/span>QtWidgets import<\/span> QApplication,<\/span> QMainWindow,<\/span> QPushButton
      \nimport<\/span> sys<\/p>\n

      # \u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4fe1\u53f7\u7684\u7c7b<\/span>
      \nclass<\/span> Communicate<\/span>(<\/span>QObject)<\/span>:<\/span>
      \n closeApp =<\/span> pyqtSignal(<\/span>)<\/span> # \u5b9a\u4e49\u4e00\u4e2a\u4fe1\u53f7<\/span><\/p>\n

      class<\/span> MyWindow<\/span>(<\/span>QMainWindow)<\/span>:<\/span>
      \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
      \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
      \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

      def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
      \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898\u548c\u5927\u5c0f<\/span>
      \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u81ea\u5b9a\u4e49\u4fe1\u53f7\u793a\u4f8b'<\/span>)<\/span>
      \n self.<\/span>setGeometry(<\/span>100<\/span>,<\/span> 100<\/span>,<\/span> 300<\/span>,<\/span> 200<\/span>)<\/span><\/p>\n

      # \u521b\u5efa\u901a\u4fe1\u5bf9\u8c61<\/span>
      \n self.<\/span>c =<\/span> Communicate(<\/span>)<\/span>
      \n self.<\/span>c.<\/span>closeApp.<\/span>connect(<\/span>self.<\/span>close)<\/span> # \u8fde\u63a5\u4fe1\u53f7\u5230\u69fd<\/span><\/p>\n

      # \u521b\u5efa\u6309\u94ae<\/span>
      \n btn =<\/span> QPushButton(<\/span>'\u5173\u95ed\u7a97\u53e3'<\/span>,<\/span> self)<\/span>
      \n btn.<\/span>move(<\/span>100<\/span>,<\/span> 80<\/span>)<\/span>
      \n btn.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>emit_signal)<\/span> # \u6309\u94ae\u70b9\u51fb\u89e6\u53d1\u4fe1\u53f7<\/span><\/p>\n

      def<\/span> emit_signal<\/span>(<\/span>self)<\/span>:<\/span>
      \n print<\/span>(<\/span>'\u53d1\u5c04\u5173\u95ed\u4fe1\u53f7 – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span>
      \n self.<\/span>c.<\/span>closeApp.<\/span>emit(<\/span>)<\/span> # \u53d1\u5c04\u4fe1\u53f7<\/span><\/p>\n

      if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
      \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
      \n window =<\/span> MyWindow(<\/span>)<\/span>
      \n window.<\/span>show(<\/span>)<\/span>
      \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

      \n

      6. \u5e38\u7528\u63a7\u4ef6\u8be6\u89e3<\/h3>\n

      \u6587\u672c\u6846(QLineEdit)\u793a\u4f8b<\/h4>\n

      # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u6587\u672c\u6846\u793a\u4f8b<\/span><\/p>\n

      from<\/span> PyQt5.<\/span>QtWidgets import<\/span> (<\/span>QApplication,<\/span> QWidget,<\/span> QLabel,<\/span>
      \n QLineEdit,<\/span> QPushButton,<\/span> QVBoxLayout)<\/span>
      \nimport<\/span> sys<\/p>\n

      class<\/span> LineEditExample<\/span>(<\/span>QWidget)<\/span>:<\/span>
      \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
      \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
      \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

      def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
      \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898<\/span>
      \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u6587\u672c\u6846\u793a\u4f8b'<\/span>)<\/span><\/p>\n

      # \u521b\u5efa\u5e03\u5c40<\/span>
      \n layout =<\/span> QVBoxLayout(<\/span>)<\/span><\/p>\n

      # \u521b\u5efa\u6807\u7b7e<\/span>
      \n self.<\/span>label =<\/span> QLabel(<\/span>'\u8f93\u5165\u5185\u5bb9\u5c06\u663e\u793a\u5728\u8fd9\u91cc'<\/span>)<\/span><\/p>\n

      # \u521b\u5efa\u6587\u672c\u6846<\/span>
      \n self.<\/span>textbox =<\/span> QLineEdit(<\/span>self)<\/span>
      \n self.<\/span>textbox.<\/span>setPlaceholderText(<\/span>'\u8bf7\u8f93\u5165\u6587\u672c…'<\/span>)<\/span><\/p>\n

      # \u521b\u5efa\u6309\u94ae<\/span>
      \n btn =<\/span> QPushButton(<\/span>'\u663e\u793a\u6587\u672c'<\/span>,<\/span> self)<\/span>
      \n btn.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>on_click)<\/span><\/p>\n

      # \u5c06\u63a7\u4ef6\u6dfb\u52a0\u5230\u5e03\u5c40\u4e2d<\/span>
      \n layout.<\/span>addWidget(<\/span>self.<\/span>label)<\/span>
      \n layout.<\/span>addWidget(<\/span>self.<\/span>textbox)<\/span>
      \n layout.<\/span>addWidget(<\/span>btn)<\/span><\/p>\n

      # \u8bbe\u7f6e\u7a97\u53e3\u5e03\u5c40<\/span>
      \n self.<\/span>setLayout(<\/span>layout)<\/span><\/p>\n

      def<\/span> on_click<\/span>(<\/span>self)<\/span>:<\/span>
      \n text =<\/span> self.<\/span>textbox.<\/span>text(<\/span>)<\/span>
      \n self.<\/span>label.<\/span>setText(<\/span>f'\u4f60\u8f93\u5165\u4e86: <\/span>{<\/span>text}<\/span><\/span> – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span><\/span>)<\/span><\/p>\n

      if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
      \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
      \n ex =<\/span> LineEditExample(<\/span>)<\/span>
      \n ex.<\/span>show(<\/span>)<\/span>
      \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

      \n

      7. \u5bf9\u8bdd\u6846\u4e0e\u6d88\u606f\u6846<\/h3>\n

      PyQt5\u63d0\u4f9b\u591a\u79cd\u5bf9\u8bdd\u6846：<\/p>\n

        \n
      • QMessageBox：\u6d88\u606f\u5bf9\u8bdd\u6846<\/li>\n
      • QInputDialog：\u8f93\u5165\u5bf9\u8bdd\u6846<\/li>\n
      • QFileDialog：\u6587\u4ef6\u5bf9\u8bdd\u6846<\/li>\n
      • QColorDialog：\u989c\u8272\u5bf9\u8bdd\u6846<\/li>\n<\/ul>\n

        \u6d88\u606f\u6846\u793a\u4f8b：<\/p>\n

        # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u6d88\u606f\u6846\u793a\u4f8b<\/span><\/p>\n

        from<\/span> PyQt5.<\/span>QtWidgets import<\/span> (<\/span>QApplication,<\/span> QWidget,<\/span> QPushButton,<\/span>
        \n QVBoxLayout,<\/span> QMessageBox)<\/span>
        \nimport<\/span> sys<\/p>\n

        class<\/span> MessageBoxExample<\/span>(<\/span>QWidget)<\/span>:<\/span>
        \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
        \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
        \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

        def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898<\/span>
        \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u6d88\u606f\u6846\u793a\u4f8b'<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u5e03\u5c40<\/span>
        \n layout =<\/span> QVBoxLayout(<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u6309\u94ae<\/span>
        \n btn_info =<\/span> QPushButton(<\/span>'\u663e\u793a\u4fe1\u606f\u6846'<\/span>,<\/span> self)<\/span>
        \n btn_info.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>show_info)<\/span><\/p>\n

        btn_warn =<\/span> QPushButton(<\/span>'\u663e\u793a\u8b66\u544a\u6846'<\/span>,<\/span> self)<\/span>
        \n btn_warn.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>show_warning)<\/span><\/p>\n

        btn_question =<\/span> QPushButton(<\/span>'\u663e\u793a\u95ee\u9898\u6846'<\/span>,<\/span> self)<\/span>
        \n btn_question.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>show_question)<\/span><\/p>\n

        # \u5c06\u6309\u94ae\u6dfb\u52a0\u5230\u5e03\u5c40\u4e2d<\/span>
        \n layout.<\/span>addWidget(<\/span>btn_info)<\/span>
        \n layout.<\/span>addWidget(<\/span>btn_warn)<\/span>
        \n layout.<\/span>addWidget(<\/span>btn_question)<\/span><\/p>\n

        # \u8bbe\u7f6e\u7a97\u53e3\u5e03\u5c40<\/span>
        \n self.<\/span>setLayout(<\/span>layout)<\/span><\/p>\n

        def<\/span> show_info<\/span>(<\/span>self)<\/span>:<\/span>
        \n QMessageBox.<\/span>information(<\/span>self,<\/span> '\u4fe1\u606f'<\/span>,<\/span>
        \n '\u8fd9\u662f\u4e00\u4e2a\u4fe1\u606f\u6846 – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

        def<\/span> show_warning<\/span>(<\/span>self)<\/span>:<\/span>
        \n QMessageBox.<\/span>warning(<\/span>self,<\/span> '\u8b66\u544a'<\/span>,<\/span>
        \n '\u8fd9\u662f\u4e00\u4e2a\u8b66\u544a\u6846 – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

        def<\/span> show_question<\/span>(<\/span>self)<\/span>:<\/span>
        \n reply =<\/span> QMessageBox.<\/span>question(<\/span>self,<\/span> '\u95ee\u9898'<\/span>,<\/span>
        \n '\u4f60\u786e\u5b9a\u8981\u7ee7\u7eed\u5417? – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>,<\/span>
        \n QMessageBox.<\/span>Yes |<\/span> QMessageBox.<\/span>No,<\/span>
        \n QMessageBox.<\/span>No)<\/span><\/p>\n

        if<\/span> reply ==<\/span> QMessageBox.<\/span>Yes:<\/span>
        \n print<\/span>(<\/span>'\u7528\u6237\u9009\u62e9\u4e86"\u662f"'<\/span>)<\/span>
        \n else<\/span>:<\/span>
        \n print<\/span>(<\/span>'\u7528\u6237\u9009\u62e9\u4e86"\u5426"'<\/span>)<\/span><\/p>\n

        if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
        \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
        \n ex =<\/span> MessageBoxExample(<\/span>)<\/span>
        \n ex.<\/span>show(<\/span>)<\/span>
        \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

        \n

        8. \u4e3b\u7a97\u53e3\u4e0e\u83dc\u5355\u680f<\/h3>\n

        # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u4e3b\u7a97\u53e3\u4e0e\u83dc\u5355\u680f\u793a\u4f8b<\/span><\/p>\n

        from<\/span> PyQt5.<\/span>QtWidgets import<\/span> (<\/span>QApplication,<\/span> QMainWindow,<\/span> QAction,<\/span>
        \n QTextEdit,<\/span> QFileDialog,<\/span> QMessageBox)<\/span>
        \nfrom<\/span> PyQt5.<\/span>QtGui import<\/span> QIcon
        \nimport<\/span> sys<\/p>\n

        class<\/span> MainWindow<\/span>(<\/span>QMainWindow)<\/span>:<\/span>
        \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
        \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
        \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

        def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898\u548c\u5927\u5c0f<\/span>
        \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u4e3b\u7a97\u53e3\u793a\u4f8b'<\/span>)<\/span>
        \n self.<\/span>setGeometry(<\/span>100<\/span>,<\/span> 100<\/span>,<\/span> 800<\/span>,<\/span> 600<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u6587\u672c\u7f16\u8f91\u533a<\/span>
        \n self.<\/span>textEdit =<\/span> QTextEdit(<\/span>)<\/span>
        \n self.<\/span>setCentralWidget(<\/span>self.<\/span>textEdit)<\/span><\/p>\n

        # \u521b\u5efa\u72b6\u6001\u680f<\/span>
        \n self.<\/span>statusBar(<\/span>)<\/span>.<\/span>showMessage(<\/span>'\u5c31\u7eea – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u83dc\u5355\u680f<\/span>
        \n self.<\/span>createMenus(<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u5de5\u5177\u680f<\/span>
        \n self.<\/span>createToolBar(<\/span>)<\/span><\/p>\n

        def<\/span> createMenus<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u521b\u5efa\u6587\u4ef6\u83dc\u5355<\/span>
        \n menubar =<\/span> self.<\/span>menuBar(<\/span>)<\/span>
        \n fileMenu =<\/span> menubar.<\/span>addMenu(<\/span>'\u6587\u4ef6'<\/span>)<\/span><\/p>\n

        # \u65b0\u5efa\u52a8\u4f5c<\/span>
        \n newAct =<\/span> QAction(<\/span>QIcon(<\/span>'new.png'<\/span>)<\/span>,<\/span> '\u65b0\u5efa'<\/span>,<\/span> self)<\/span>
        \n newAct.<\/span>setShortcut(<\/span>'Ctrl+N'<\/span>)<\/span>
        \n newAct.<\/span>setStatusTip(<\/span>'\u65b0\u5efa\u6587\u4ef6'<\/span>)<\/span>
        \n newAct.<\/span>triggered.<\/span>connect(<\/span>self.<\/span>newFile)<\/span><\/p>\n

        # \u6253\u5f00\u52a8\u4f5c<\/span>
        \n openAct =<\/span> QAction(<\/span>QIcon(<\/span>'open.png'<\/span>)<\/span>,<\/span> '\u6253\u5f00'<\/span>,<\/span> self)<\/span>
        \n openAct.<\/span>setShortcut(<\/span>'Ctrl+O'<\/span>)<\/span>
        \n openAct.<\/span>setStatusTip(<\/span>'\u6253\u5f00\u6587\u4ef6'<\/span>)<\/span>
        \n openAct.<\/span>triggered.<\/span>connect(<\/span>self.<\/span>openFile)<\/span><\/p>\n

        # \u9000\u51fa\u52a8\u4f5c<\/span>
        \n exitAct =<\/span> QAction(<\/span>QIcon(<\/span>'exit.png'<\/span>)<\/span>,<\/span> '\u9000\u51fa'<\/span>,<\/span> self)<\/span>
        \n exitAct.<\/span>setShortcut(<\/span>'Ctrl+Q'<\/span>)<\/span>
        \n exitAct.<\/span>setStatusTip(<\/span>'\u9000\u51fa\u5e94\u7528'<\/span>)<\/span>
        \n exitAct.<\/span>triggered.<\/span>connect(<\/span>self.<\/span>close)<\/span><\/p>\n

        # \u5c06\u52a8\u4f5c\u6dfb\u52a0\u5230\u6587\u4ef6\u83dc\u5355<\/span>
        \n fileMenu.<\/span>addAction(<\/span>newAct)<\/span>
        \n fileMenu.<\/span>addAction(<\/span>openAct)<\/span>
        \n fileMenu.<\/span>addSeparator(<\/span>)<\/span>
        \n fileMenu.<\/span>addAction(<\/span>exitAct)<\/span><\/p>\n

        # \u521b\u5efa\u5e2e\u52a9\u83dc\u5355<\/span>
        \n helpMenu =<\/span> menubar.<\/span>addMenu(<\/span>'\u5e2e\u52a9'<\/span>)<\/span>
        \n aboutAct =<\/span> QAction(<\/span>'\u5173\u4e8e'<\/span>,<\/span> self)<\/span>
        \n aboutAct.<\/span>triggered.<\/span>connect(<\/span>self.<\/span>about)<\/span>
        \n helpMenu.<\/span>addAction(<\/span>aboutAct)<\/span><\/p>\n

        def<\/span> createToolBar<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u521b\u5efa\u5de5\u5177\u680f<\/span>
        \n toolbar =<\/span> self.<\/span>addToolBar(<\/span>'\u5de5\u5177\u680f'<\/span>)<\/span><\/p>\n

        # \u6dfb\u52a0\u5de5\u5177\u6309\u94ae<\/span>
        \n newAct =<\/span> QAction(<\/span>QIcon(<\/span>'new.png'<\/span>)<\/span>,<\/span> '\u65b0\u5efa'<\/span>,<\/span> self)<\/span>
        \n newAct.<\/span>triggered.<\/span>connect(<\/span>self.<\/span>newFile)<\/span>
        \n toolbar.<\/span>addAction(<\/span>newAct)<\/span><\/p>\n

        openAct =<\/span> QAction(<\/span>QIcon(<\/span>'open.png'<\/span>)<\/span>,<\/span> '\u6253\u5f00'<\/span>,<\/span> self)<\/span>
        \n openAct.<\/span>triggered.<\/span>connect(<\/span>self.<\/span>openFile)<\/span>
        \n toolbar.<\/span>addAction(<\/span>openAct)<\/span><\/p>\n

        def<\/span> newFile<\/span>(<\/span>self)<\/span>:<\/span>
        \n self.<\/span>textEdit.<\/span>clear(<\/span>)<\/span>
        \n self.<\/span>statusBar(<\/span>)<\/span>.<\/span>showMessage(<\/span>'\u65b0\u5efa\u6587\u4ef6 – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

        def<\/span> openFile<\/span>(<\/span>self)<\/span>:<\/span>
        \n fname =<\/span> QFileDialog.<\/span>getOpenFileName(<\/span>self,<\/span> '\u6253\u5f00\u6587\u4ef6'<\/span>,<\/span> '.'<\/span>)<\/span><\/p>\n

        if<\/span> fname[<\/span>0<\/span>]<\/span>:<\/span>
        \n with<\/span> open<\/span>(<\/span>fname[<\/span>0<\/span>]<\/span>,<\/span> 'r'<\/span>,<\/span> encoding=<\/span>'utf-8'<\/span>)<\/span> as<\/span> f:<\/span>
        \n data =<\/span> f.<\/span>read(<\/span>)<\/span>
        \n self.<\/span>textEdit.<\/span>setText(<\/span>data)<\/span><\/p>\n

        self.<\/span>statusBar(<\/span>)<\/span>.<\/span>showMessage(<\/span>f'\u5df2\u6253\u5f00: <\/span>{<\/span>fname[<\/span>0<\/span>]<\/span>}<\/span><\/span> – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span><\/span>)<\/span><\/p>\n

        def<\/span> about<\/span>(<\/span>self)<\/span>:<\/span>
        \n QMessageBox.<\/span>about(<\/span>self,<\/span> '\u5173\u4e8e'<\/span>,<\/span>
        \n '\u8fd9\u662f\u4e00\u4e2aPyQt5\u4e3b\u7a97\u53e3\u793a\u4f8b\\\\n\u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

        if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
        \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
        \n window =<\/span> MainWindow(<\/span>)<\/span>
        \n window.<\/span>show(<\/span>)<\/span>
        \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

        \n

        9. \u7ed8\u56fe\u4e0e\u56fe\u5f62\u89c6\u56fe<\/h3>\n

        PyQt5\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u7ed8\u56fe\u529f\u80fd，\u4e3b\u8981\u901a\u8fc7QPainter\u7c7b\u5b9e\u73b0\u3002<\/p>\n

        \u7ed8\u56fe\u793a\u4f8b：<\/p>\n

        # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u7ed8\u56fe\u793a\u4f8b<\/span><\/p>\n

        from<\/span> PyQt5.<\/span>QtWidgets import<\/span> QApplication,<\/span> QWidget
        \nfrom<\/span> PyQt5.<\/span>QtGui import<\/span> QPainter,<\/span> QColor,<\/span> QPen
        \nfrom<\/span> PyQt5.<\/span>QtCore import<\/span> Qt
        \nimport<\/span> sys<\/p>\n

        class<\/span> DrawingExample<\/span>(<\/span>QWidget)<\/span>:<\/span>
        \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
        \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
        \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

        def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898\u548c\u5927\u5c0f<\/span>
        \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u7ed8\u56fe\u793a\u4f8b'<\/span>)<\/span>
        \n self.<\/span>setGeometry(<\/span>100<\/span>,<\/span> 100<\/span>,<\/span> 600<\/span>,<\/span> 400<\/span>)<\/span><\/p>\n

        def<\/span> paintEvent<\/span>(<\/span>self,<\/span> event)<\/span>:<\/span>
        \n # \u521b\u5efaQPainter\u5bf9\u8c61<\/span>
        \n painter =<\/span> QPainter(<\/span>self)<\/span><\/p>\n

        # \u8bbe\u7f6e\u753b\u7b14<\/span>
        \n pen =<\/span> QPen(<\/span>Qt.<\/span>black,<\/span> 2<\/span>,<\/span> Qt.<\/span>SolidLine)<\/span>
        \n painter.<\/span>setPen(<\/span>pen)<\/span><\/p>\n

        # \u7ed8\u5236\u76f4\u7ebf<\/span>
        \n painter.<\/span>drawLine(<\/span>20<\/span>,<\/span> 40<\/span>,<\/span> 250<\/span>,<\/span> 40<\/span>)<\/span><\/p>\n

        # \u7ed8\u5236\u77e9\u5f62<\/span>
        \n painter.<\/span>drawRect(<\/span>20<\/span>,<\/span> 80<\/span>,<\/span> 120<\/span>,<\/span> 80<\/span>)<\/span><\/p>\n

        # \u7ed8\u5236\u5706\u89d2\u77e9\u5f62<\/span>
        \n painter.<\/span>drawRoundedRect(<\/span>180<\/span>,<\/span> 80<\/span>,<\/span> 120<\/span>,<\/span> 80<\/span>,<\/span> 20<\/span>,<\/span> 20<\/span>)<\/span><\/p>\n

        # \u7ed8\u5236\u692d\u5706<\/span>
        \n painter.<\/span>drawEllipse(<\/span>20<\/span>,<\/span> 200<\/span>,<\/span> 120<\/span>,<\/span> 80<\/span>)<\/span><\/p>\n

        # \u7ed8\u5236\u5f27\u7ebf<\/span>
        \n painter.<\/span>drawArc(<\/span>180<\/span>,<\/span> 200<\/span>,<\/span> 120<\/span>,<\/span> 80<\/span>,<\/span> 0<\/span>,<\/span> 180<\/span> *<\/span> 16<\/span>)<\/span><\/p>\n

        # \u7ed8\u5236\u6587\u672c<\/span>
        \n painter.<\/span>drawText(<\/span>20<\/span>,<\/span> 320<\/span>,<\/span> 'PyQt5\u7ed8\u56fe\u793a\u4f8b – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

        # \u8bbe\u7f6e\u4e0d\u540c\u989c\u8272<\/span>
        \n pen.<\/span>setColor(<\/span>Qt.<\/span>blue)<\/span>
        \n painter.<\/span>setPen(<\/span>pen)<\/span><\/p>\n

        # \u7ed8\u5236\u70b9<\/span>
        \n for<\/span> i in<\/span> range<\/span>(<\/span>100<\/span>)<\/span>:<\/span>
        \n painter.<\/span>drawPoint(<\/span>400<\/span> +<\/span> i,<\/span> 50<\/span> +<\/span> i)<\/span><\/p>\n

        # \u586b\u5145\u77e9\u5f62<\/span>
        \n painter.<\/span>fillRect(<\/span>400<\/span>,<\/span> 150<\/span>,<\/span> 100<\/span>,<\/span> 100<\/span>,<\/span> QColor(<\/span>255<\/span>,<\/span> 0<\/span>,<\/span> 0<\/span>)<\/span>)<\/span><\/p>\n

        if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
        \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
        \n ex =<\/span> DrawingExample(<\/span>)<\/span>
        \n ex.<\/span>show(<\/span>)<\/span>
        \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

        \n

        10. \u591a\u7ebf\u7a0b\u7f16\u7a0b<\/h3>\n

        \u5728GUI\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u591a\u7ebf\u7a0b\u53ef\u4ee5\u907f\u514d\u754c\u9762\u51bb\u7ed3\u3002<\/p>\n

        QThread\u793a\u4f8b：<\/p>\n

        # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u591a\u7ebf\u7a0b\u793a\u4f8b<\/span><\/p>\n

        from<\/span> PyQt5.<\/span>QtCore import<\/span> QThread,<\/span> pyqtSignal
        \nfrom<\/span> PyQt5.<\/span>QtWidgets import<\/span> (<\/span>QApplication,<\/span> QWidget,<\/span> QPushButton,<\/span>
        \n QVBoxLayout,<\/span> QLabel)<\/span>
        \nimport<\/span> time
        \nimport<\/span> sys<\/p>\n

        # \u5de5\u4f5c\u7ebf\u7a0b\u7c7b<\/span>
        \nclass<\/span> WorkerThread<\/span>(<\/span>QThread)<\/span>:<\/span>
        \n # \u5b9a\u4e49\u4fe1\u53f7<\/span>
        \n update_signal =<\/span> pyqtSignal(<\/span>int<\/span>)<\/span>
        \n finished_signal =<\/span> pyqtSignal(<\/span>str<\/span>)<\/span><\/p>\n

        def<\/span> run<\/span>(<\/span>self)<\/span>:<\/span>
        \n for<\/span> i in<\/span> range<\/span>(<\/span>1<\/span>,<\/span> 101<\/span>)<\/span>:<\/span>
        \n time.<\/span>sleep(<\/span>0.05<\/span>)<\/span> # \u6a21\u62df\u8017\u65f6\u64cd\u4f5c<\/span>
        \n self.<\/span>update_signal.<\/span>emit(<\/span>i)<\/span> # \u53d1\u5c04\u8fdb\u5ea6\u66f4\u65b0\u4fe1\u53f7<\/span><\/p>\n

        self.<\/span>finished_signal.<\/span>emit(<\/span>'\u4efb\u52a1\u5b8c\u6210 – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

        class<\/span> ThreadExample<\/span>(<\/span>QWidget)<\/span>:<\/span>
        \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
        \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
        \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

        def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898<\/span>
        \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u591a\u7ebf\u7a0b\u793a\u4f8b'<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u5e03\u5c40<\/span>
        \n layout =<\/span> QVBoxLayout(<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u6807\u7b7e\u663e\u793a\u8fdb\u5ea6<\/span>
        \n self.<\/span>progress_label =<\/span> QLabel(<\/span>'\u51c6\u5907\u5f00\u59cb'<\/span>,<\/span> self)<\/span><\/p>\n

        # \u521b\u5efa\u6309\u94ae<\/span>
        \n self.<\/span>start_btn =<\/span> QPushButton(<\/span>'\u5f00\u59cb\u4efb\u52a1'<\/span>,<\/span> self)<\/span>
        \n self.<\/span>start_btn.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>start_task)<\/span><\/p>\n

        # \u5c06\u63a7\u4ef6\u6dfb\u52a0\u5230\u5e03\u5c40\u4e2d<\/span>
        \n layout.<\/span>addWidget(<\/span>self.<\/span>progress_label)<\/span>
        \n layout.<\/span>addWidget(<\/span>self.<\/span>start_btn)<\/span><\/p>\n

        # \u8bbe\u7f6e\u7a97\u53e3\u5e03\u5c40<\/span>
        \n self.<\/span>setLayout(<\/span>layout)<\/span><\/p>\n

        # \u521b\u5efa\u5de5\u4f5c\u7ebf\u7a0b<\/span>
        \n self.<\/span>worker =<\/span> WorkerThread(<\/span>)<\/span>
        \n self.<\/span>worker.<\/span>update_signal.<\/span>connect(<\/span>self.<\/span>update_progress)<\/span>
        \n self.<\/span>worker.<\/span>finished_signal.<\/span>connect(<\/span>self.<\/span>task_finished)<\/span><\/p>\n

        def<\/span> start_task<\/span>(<\/span>self)<\/span>:<\/span>
        \n self.<\/span>start_btn.<\/span>setEnabled(<\/span>False<\/span>)<\/span>
        \n self.<\/span>progress_label.<\/span>setText(<\/span>'\u4efb\u52a1\u5f00\u59cb…'<\/span>)<\/span>
        \n self.<\/span>worker.<\/span>start(<\/span>)<\/span> # \u542f\u52a8\u7ebf\u7a0b<\/span><\/p>\n

        def<\/span> update_progress<\/span>(<\/span>self,<\/span> value)<\/span>:<\/span>
        \n self.<\/span>progress_label.<\/span>setText(<\/span>f'\u8fdb\u5ea6: <\/span>{<\/span>value}<\/span><\/span>%'<\/span><\/span>)<\/span><\/p>\n

        def<\/span> task_finished<\/span>(<\/span>self,<\/span> message)<\/span>:<\/span>
        \n self.<\/span>progress_label.<\/span>setText(<\/span>message)<\/span>
        \n self.<\/span>start_btn.<\/span>setEnabled(<\/span>True<\/span>)<\/span><\/p>\n

        if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
        \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
        \n ex =<\/span> ThreadExample(<\/span>)<\/span>
        \n ex.<\/span>show(<\/span>)<\/span>
        \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

        \n

        11. \u6570\u636e\u5e93\u8fde\u63a5<\/h3>\n

        PyQt5\u901a\u8fc7QtSql\u6a21\u5757\u63d0\u4f9b\u6570\u636e\u5e93\u652f\u6301\u3002<\/p>\n

        SQLite\u6570\u636e\u5e93\u793a\u4f8b：<\/p>\n

        # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u6570\u636e\u5e93\u8fde\u63a5\u793a\u4f8b<\/span><\/p>\n

        from<\/span> PyQt5.<\/span>QtWidgets import<\/span> (<\/span>QApplication,<\/span> QWidget,<\/span> QVBoxLayout,<\/span>
        \n QPushButton,<\/span> QLabel,<\/span> QLineEdit,<\/span> QTextEdit)<\/span>
        \nfrom<\/span> PyQt5.<\/span>QtSql import<\/span> QSqlDatabase,<\/span> QSqlQuery
        \nimport<\/span> sys<\/p>\n

        class<\/span> DatabaseExample<\/span>(<\/span>QWidget)<\/span>:<\/span>
        \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
        \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
        \n self.<\/span>initUI(<\/span>)<\/span>
        \n self.<\/span>initDB(<\/span>)<\/span><\/p>\n

        def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898<\/span>
        \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u6570\u636e\u5e93\u793a\u4f8b'<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u5e03\u5c40<\/span>
        \n layout =<\/span> QVBoxLayout(<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u8f93\u5165\u63a7\u4ef6<\/span>
        \n self.<\/span>name_input =<\/span> QLineEdit(<\/span>self)<\/span>
        \n self.<\/span>name_input.<\/span>setPlaceholderText(<\/span>'\u8f93\u5165\u59d3\u540d'<\/span>)<\/span><\/p>\n

        self.<\/span>age_input =<\/span> QLineEdit(<\/span>self)<\/span>
        \n self.<\/span>age_input.<\/span>setPlaceholderText(<\/span>'\u8f93\u5165\u5e74\u9f84'<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u6309\u94ae<\/span>
        \n self.<\/span>add_btn =<\/span> QPushButton(<\/span>'\u6dfb\u52a0\u8bb0\u5f55'<\/span>,<\/span> self)<\/span>
        \n self.<\/span>add_btn.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>add_record)<\/span><\/p>\n

        self.<\/span>show_btn =<\/span> QPushButton(<\/span>'\u663e\u793a\u8bb0\u5f55'<\/span>,<\/span> self)<\/span>
        \n self.<\/span>show_btn.<\/span>clicked.<\/span>connect(<\/span>self.<\/span>show_records)<\/span><\/p>\n

        # \u521b\u5efa\u6587\u672c\u663e\u793a\u533a<\/span>
        \n self.<\/span>text_output =<\/span> QTextEdit(<\/span>self)<\/span>
        \n self.<\/span>text_output.<\/span>setReadOnly(<\/span>True<\/span>)<\/span><\/p>\n

        # \u5c06\u63a7\u4ef6\u6dfb\u52a0\u5230\u5e03\u5c40\u4e2d<\/span>
        \n layout.<\/span>addWidget(<\/span>QLabel(<\/span>'\u59d3\u540d:'<\/span>)<\/span>)<\/span>
        \n layout.<\/span>addWidget(<\/span>self.<\/span>name_input)<\/span>
        \n layout.<\/span>addWidget(<\/span>QLabel(<\/span>'\u5e74\u9f84:'<\/span>)<\/span>)<\/span>
        \n layout.<\/span>addWidget(<\/span>self.<\/span>age_input)<\/span>
        \n layout.<\/span>addWidget(<\/span>self.<\/span>add_btn)<\/span>
        \n layout.<\/span>addWidget(<\/span>self.<\/span>show_btn)<\/span>
        \n layout.<\/span>addWidget(<\/span>self.<\/span>text_output)<\/span><\/p>\n

        # \u8bbe\u7f6e\u7a97\u53e3\u5e03\u5c40<\/span>
        \n self.<\/span>setLayout(<\/span>layout)<\/span><\/p>\n

        def<\/span> initDB<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u521b\u5efaSQLite\u6570\u636e\u5e93\u8fde\u63a5<\/span>
        \n self.<\/span>db =<\/span> QSqlDatabase.<\/span>addDatabase(<\/span>'QSQLITE'<\/span>)<\/span>
        \n self.<\/span>db.<\/span>setDatabaseName(<\/span>'test.db'<\/span>)<\/span><\/p>\n

        if<\/span> not<\/span> self.<\/span>db.<\/span>open<\/span>(<\/span>)<\/span>:<\/span>
        \n self.<\/span>text_output.<\/span>setText(<\/span>'\u65e0\u6cd5\u8fde\u63a5\u6570\u636e\u5e93'<\/span>)<\/span>
        \n return<\/span> False<\/span><\/p>\n

        # \u521b\u5efa\u8868<\/span>
        \n query =<\/span> QSqlQuery(<\/span>)<\/span>
        \n query.<\/span>exec_(<\/span>"""
        \n CREATE TABLE IF NOT EXISTS people (
        \n id INTEGER PRIMARY KEY AUTOINCREMENT,
        \n name VARCHAR(40) NOT NULL,
        \n age INTEGER
        \n )
        \n """<\/span>)<\/span><\/p>\n

        return<\/span> True<\/span><\/p>\n

        def<\/span> add_record<\/span>(<\/span>self)<\/span>:<\/span>
        \n name =<\/span> self.<\/span>name_input.<\/span>text(<\/span>)<\/span>
        \n age =<\/span> self.<\/span>age_input.<\/span>text(<\/span>)<\/span><\/p>\n

        if<\/span> not<\/span> name or<\/span> not<\/span> age:<\/span>
        \n self.<\/span>text_output.<\/span>setText(<\/span>'\u8bf7\u8f93\u5165\u59d3\u540d\u548c\u5e74\u9f84'<\/span>)<\/span>
        \n return<\/span><\/p>\n

        query =<\/span> QSqlQuery(<\/span>)<\/span>
        \n query.<\/span>prepare(<\/span>"INSERT INTO people (name, age) VALUES (?, ?)"<\/span>)<\/span>
        \n query.<\/span>addBindValue(<\/span>name)<\/span>
        \n query.<\/span>addBindValue(<\/span>age)<\/span><\/p>\n

        if<\/span> query.<\/span>exec_(<\/span>)<\/span>:<\/span>
        \n self.<\/span>text_output.<\/span>setText(<\/span>'\u8bb0\u5f55\u6dfb\u52a0\u6210\u529f – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span>
        \n self.<\/span>name_input.<\/span>clear(<\/span>)<\/span>
        \n self.<\/span>age_input.<\/span>clear(<\/span>)<\/span>
        \n else<\/span>:<\/span>
        \n self.<\/span>text_output.<\/span>setText(<\/span>'\u6dfb\u52a0\u8bb0\u5f55\u5931\u8d25'<\/span>)<\/span><\/p>\n

        def<\/span> show_records<\/span>(<\/span>self)<\/span>:<\/span>
        \n query =<\/span> QSqlQuery(<\/span>"SELECT id, name, age FROM people"<\/span>)<\/span>
        \n records =<\/span> [<\/span>]<\/span><\/p>\n

        while<\/span> query.<\/span>next<\/span>(<\/span>)<\/span>:<\/span>
        \n id<\/span> =<\/span> query.<\/span>value(<\/span>0<\/span>)<\/span>
        \n name =<\/span> query.<\/span>value(<\/span>1<\/span>)<\/span>
        \n age =<\/span> query.<\/span>value(<\/span>2<\/span>)<\/span>
        \n records.<\/span>append(<\/span>f"ID: <\/span>{<\/span>id<\/span>}<\/span><\/span>, \u59d3\u540d: <\/span>{<\/span>name}<\/span><\/span>, \u5e74\u9f84: <\/span>{<\/span>age}<\/span><\/span>"<\/span><\/span>)<\/span><\/p>\n

        if<\/span> records:<\/span>
        \n self.<\/span>text_output.<\/span>setText(<\/span>"\\\\n"<\/span>.<\/span>join(<\/span>records)<\/span>)<\/span>
        \n else<\/span>:<\/span>
        \n self.<\/span>text_output.<\/span>setText(<\/span>'\u6ca1\u6709\u8bb0\u5f55 – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span><\/p>\n

        if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
        \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
        \n ex =<\/span> DatabaseExample(<\/span>)<\/span>
        \n ex.<\/span>show(<\/span>)<\/span>
        \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

        \n

        12. \u6837\u5f0f\u8868\u4e0e\u4e3b\u9898\u5b9a\u5236<\/h3>\n

        PyQt5\u652f\u6301\u4f7f\u7528QSS(Qt\u6837\u5f0f\u8868)\u6765\u81ea\u5b9a\u4e49\u63a7\u4ef6\u5916\u89c2\u3002<\/p>\n

        \u6837\u5f0f\u8868\u793a\u4f8b：<\/p>\n

        # \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2 – \u6837\u5f0f\u8868\u793a\u4f8b<\/span><\/p>\n

        from<\/span> PyQt5.<\/span>QtWidgets import<\/span> (<\/span>QApplication,<\/span> QWidget,<\/span> QPushButton,<\/span>
        \n QVBoxLayout,<\/span> QLabel)<\/span>
        \nimport<\/span> sys<\/p>\n

        class<\/span> StyleSheetExample<\/span>(<\/span>QWidget)<\/span>:<\/span>
        \n def<\/span> __init__<\/span>(<\/span>self)<\/span>:<\/span>
        \n super<\/span>(<\/span>)<\/span>.<\/span>__init__(<\/span>)<\/span>
        \n self.<\/span>initUI(<\/span>)<\/span><\/p>\n

        def<\/span> initUI<\/span>(<\/span>self)<\/span>:<\/span>
        \n # \u8bbe\u7f6e\u7a97\u53e3\u6807\u9898<\/span>
        \n self.<\/span>setWindowTitle(<\/span>'\u5341\u4e00\u5251\u7684\u6837\u5f0f\u8868\u793a\u4f8b'<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u5e03\u5c40<\/span>
        \n layout =<\/span> QVBoxLayout(<\/span>)<\/span><\/p>\n

        # \u521b\u5efa\u63a7\u4ef6<\/span>
        \n label =<\/span> QLabel(<\/span>'PyQt5\u6837\u5f0f\u8868\u793a\u4f8b – \u5341\u4e00\u5251\u7684CS_DN.\u535a\u5ba2'<\/span>)<\/span>
        \n btn1 =<\/span> QPushButton(<\/span>'\u666e\u901a\u6309\u94ae'<\/span>)<\/span>
        \n btn2 =<\/span> QPushButton(<\/span>'\u7279\u6b8a\u6309\u94ae'<\/span>)<\/span><\/p>\n

        # \u5c06\u63a7\u4ef6\u6dfb\u52a0\u5230\u5e03\u5c40\u4e2d<\/span>
        \n layout.<\/span>addWidget(<\/span>label)<\/span>
        \n layout.<\/span>addWidget(<\/span>btn1)<\/span>
        \n layout.<\/span>addWidget(<\/span>btn2)<\/span><\/p>\n

        # \u8bbe\u7f6e\u7a97\u53e3\u5e03\u5c40<\/span>
        \n self.<\/span>setLayout(<\/span>layout)<\/span><\/p>\n

        # \u8bbe\u7f6e\u6837\u5f0f\u8868<\/span>
        \n self.<\/span>setStyleSheet(<\/span>"""
        \n QWidget {
        \n background-color: #f0f0f0;
        \n font-family: Arial;
        \n }<\/p>\n

        QLabel {
        \n color: #333;
        \n font-size: 16px;
        \n font-weight: bold;
        \n padding: 10px;
        \n border: 1px solid #ccc;
        \n border-radius: 5px;
        \n background-color: white;
        \n }<\/p>\n

        QPushButton {
        \n background-color: #4CAF50;
        \n border: none;
        \n color: white;
        \n padding: 10px 20px;
        \n text-align: center;
        \n text-decoration: none;
        \n font-size: 14px;
        \n margin: 4px 2px;
        \n border-radius: 5px;
        \n }<\/p>\n

        QPushButton:hover {
        \n background-color: #45a049;
        \n }<\/p>\n

        QPushButton:pressed {
        \n background-color: #3e8e41;
        \n }<\/p>\n

        #\u7279\u6b8a\u6309\u94ae {
        \n background-color: #f44336;
        \n }<\/p>\n

        #\u7279\u6b8a\u6309\u94ae:hover {
        \n background-color: #d32f2f;
        \n }
        \n """<\/span>)<\/span><\/p>\n

        # \u4e3a\u6309\u94ae2\u8bbe\u7f6e\u5bf9\u8c61\u540d\u79f0\u4ee5\u4fbf\u7279\u6b8a\u6837\u5f0f<\/span>
        \n btn2.<\/span>setObjectName(<\/span>"\u7279\u6b8a\u6309\u94ae"<\/span>)<\/span><\/p>\n

        if<\/span> __name__ ==<\/span> '__main__'<\/span>:<\/span>
        \n app =<\/span> QApplication(<\/span>sys.<\/span>argv)<\/span>
        \n ex =<\/span> StyleSheetExample(<\/span>)<\/span>
        \n ex.<\/span>show(<\/span>)<\/span>
        \n sys.<\/span>exit(<\/span>app.<\/span>exec_(<\/span>)<\/span>)<\/span><\/p>\n

        \n

        13. \u6253\u5305\u4e0e\u53d1\u5e03<\/h3>\n

        \u4f7f\u7528PyInstaller\u53ef\u4ee5\u5c06PyQt5\u7a0b\u5e8f\u6253\u5305\u4e3a\u53ef\u6267\u884c\u6587\u4ef6\u3002<\/p>\n

        \u5b89\u88c5PyInstaller：<\/p>\n

        pip install<\/span> pyinstaller<\/p>\n

        \u6253\u5305\u547d\u4ee4：<\/p>\n

        pyinstaller –onefile<\/span> –windowed<\/span> your_script.py<\/p>\n

        \u5e38\u7528\u53c2\u6570：<\/p>\n

          \n
        • –onefile：\u6253\u5305\u4e3a\u5355\u4e2a\u53ef\u6267\u884c\u6587\u4ef6<\/li>\n
        • –windowed：\u4e0d\u663e\u793a\u63a7\u5236\u53f0\u7a97\u53e3(\u9002\u7528\u4e8eGUI\u7a0b\u5e8f)<\/li>\n
        • –icon=app.ico：\u8bbe\u7f6e\u5e94\u7528\u56fe\u6807<\/li>\n
        • –name=AppName：\u8bbe\u7f6e\u5e94\u7528\u540d\u79f0<\/li>\n<\/ul>\n

          \u6ce8\u610f\u4e8b\u9879：<\/p>\n

        • \u6253\u5305\u65f6\u53ef\u80fd\u9700\u8981\u6dfb\u52a0\u8d44\u6e90\u6587\u4ef6\u8def\u5f84<\/li>\n
        • \u56fe\u6807\u6587\u4ef6\u9700\u8981\u8f6c\u6362\u4e3a.ico\u683c\u5f0f<\/li>\n
        • \u6253\u5305\u540e\u7684\u6587\u4ef6\u4f53\u79ef\u8f83\u5927，\u56e0\u4e3a\u5305\u542b\u4e86Python\u89e3\u91ca\u5668\u548c\u6240\u6709\u4f9d\u8d56<\/li>\n
          \n

          \u5212\u91cd\u70b9！！！！<\/h3>\n

          \u672c\u6559\u7a0b\u4ecePyQt5\u7684\u57fa\u7840\u5230\u8fdb\u9636\u5185\u5bb9\u8fdb\u884c\u4e86\u5168\u9762\u8bb2\u89e3，\u6db5\u76d6\u4e86\u754c\u9762\u8bbe\u8ba1\u3001\u4fe1\u53f7\u69fd\u673a\u5236\u3001\u591a\u7ebf\u7a0b\u3001\u6570\u636e\u5e93\u64cd\u4f5c\u7b49\u6838\u5fc3\u77e5\u8bc6\u70b9\u3002\u901a\u8fc7\u5b9e\u9645\u6848\u4f8b\u6f14\u793a\u4e86PyQt5\u7684\u5f3a\u5927\u529f\u80fd\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5e2e\u52a9\u4f60\u638c\u63e1PyQt5\u5f00\u53d1\u3002<\/p>\n

          \u5982\u9700\u8fdb\u4e00\u6b65\u5b66\u4e60，\u53ef\u4ee5\u53c2\u8003：<\/p>\n

            \n
          • \u5b98\u65b9\u6587\u6863：https:\/\/www.riverbankcomputing.com\/static\/Docs\/PyQt5\/<\/li>\n
          • Qt\u5b98\u65b9\u6587\u6863：https:\/\/doc.qt.io\/<\/li>\n
          • PyQt5\u793a\u4f8b\u4ee3\u7801\u5e93<\/li>\n<\/ul>\n

            \u795d\u4f60\u7f16\u7a0b\u6109\u5feb！<\/p>\n","protected":false},"excerpt":{"rendered":"

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