HBRUSH hBrush;<\/span><\/p>\n\u83b7\u53d6 GRAY_BRUSH \u53e5\u67c4\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528\u5982\u4e0b\u7684 GetStockObject \u51fd\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n
hBrush = (HBRUSH) GetStockObject (GRAY_BRUSH); <\/p>\n
\u7136\u540e\u901a\u8fc7\u8c03\u7528 SelectObject \u51fd\u6570\u6765\u5c06\u5b83\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002<\/p>\n
SelectObject (hdc, hBrush); <\/p>\n
\u73b0\u5728，\u5f53\u7ed8\u5236\u4e0a\u8868\u4e2d\u7684\u4efb\u610f\u56fe\u5f62\u65f6，\u5185\u90e8\u90fd\u4f1a\u53d8\u6210\u7070\u8272\u3002<\/p>\n
\u5982\u679c\u8981\u7ed8\u5236\u4e00\u4e2a\u4e0d\u542b\u8fb9\u6846\u7ebf\u7684\u56fe\u5f62，\u5219\u8981\u628a NULL_PEN \u753b\u7b14\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002<\/p>\n
SelectObject (hdc, GetStockObject (NULL_PEN)); <\/p>\n
\u5982\u679c\u771f\u60f3\u7ed8\u5236\u56fe\u5f62\u7684\u8fb9\u6846\u7ebf，\u800c\u4e0d\u60f3\u586b\u5145\u56fe\u5f62\u7684\u5185\u90e8，\u53ef\u4ee5\u5c06 NULL_BRUSH \u9009\u5165\u8bbe\u5907\u73af\u5883\u3002<\/p>\n
SelectObject (hdc, GetStockObject (NULL_BRUSH)); <\/p>\n
\u4e5f\u53ef\u4ee5\u5efa\u7acb\u81ea\u5b9a\u4e49\u753b\u5237，\u5c31\u50cf\u5efa\u7acb\u81ea\u5b9a\u4e49\u753b\u7b14\u4e00\u6837\u3002\u6211\u4eec\u5f88\u5feb\u5c31\u4f1a\u8c08\u5230\u521b\u5efa\u81ea\u5b9a\u4e49\u753b\u5237\u7684\u95ee\u9898\u3002<\/p>\n
\u5173\u4e8e\u753b\u5237\u7684\u4f7f\u7528，\u4e5f\u9700\u8981\u5728\u7528\u5b83\u586b\u5145\u56fe\u5f62\u7684\u5185\u90e8\u533a\u57df\u4e4b\u524d，\u5c06\u5176\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002\u540c\u65f6\u5462，\u7528\u5b8c\u4e86\u4ee5\u540e，\u9700\u8981\u5c06\u5176\u9009\u51fa\u8bbe\u5907\u73af\u5883\u3002<\/p>\n<\/p>\n
\u4e8c.\u00a0 \u00a0 \u672c\u8282\u4ee3\u7801<\/h2>\n
\u5bf9\u4e8e\u672c\u8282\u77e5\u8bc6，\u4f69\u63aa\u5c14\u5fb7\u5148\u751f\u662f\u6ca1\u6709\u7ed9\u914d\u7f6e\u6848\u4f8b\u4ee3\u7801\u7684\u3002\u6211\u60f3，\u8fd9\u5927\u6982\u662f\u56e0\u4e3a，\u4ed6\u4e0d\u60f3\u7ed9\u6559\u6750\u4e2d\u914d\u4e0a\u592a\u591a\u7684\u7b80\u5355\u7684\u4ee3\u7801\u3002\u4e0d\u8fc7\u5462，\u6211\u8fd9\u91cc，\u5012\u662f\u613f\u610f\u591a\u914d\u7f6e\u4e00\u4e9b\u4e2a\u7b80\u5355\u548c\u57fa\u7840\u7684\u4ee3\u7801\u3002<\/p>\n
\u56e0\u4e3a，\u5728\u8fd9\u79cd\u770b\u4f3c\u7b80\u5355\u548c\u57fa\u7840\u7684\u4ee3\u7801\u4e4b\u4e2d，\u4f60\u53ef\u4ee5\u719f\u6089\u8bb8\u591a\u7684\u5df2\u6709\u7684\u77e5\u8bc6\u3002\u6bd4\u5982\u8bf4\u8bbe\u7f6e\u7a97\u53e3\u7c7b，\u6ce8\u518c\u7a97\u53e3\u7c7b，\u7b49\u7b49\u3002<\/p>\n
\u6211\u4eec\u9996\u5148\u628a\u672c\u8282\u4ee3\u7801\u7684\u7ed8\u5236\u4efb\u52a1\u5c55\u793a\u5728\u4e0b\u9762\u3002<\/p>\n
\u7ed8\u5236\u4e09\u4e2a\u586b\u5145\u533a\u57df\u3002 \u00a0 \u00a01. \u00a0BLACK_PEN，LTGRAY_BRUSH，\u7ed8\u5236\u77e9\u5f62 \u00a0 \u00a02. \u00a0\u81ea\u5b9a\u4e49\u7ea2\u8272\u753b\u7b14，NULL_BRUSH，\u692d\u5706 \u00a0 \u00a03. \u00a0NULL_PEN，GRAY_BRUSH，\u5706\u89d2\u77e9\u5f62<\/p>\n
\u7136\u540e\u5462，\u4e0b\u9762\u5c31\u662f\u5b8c\u6574\u7684\u4ee3\u7801\u4e86\u3002<\/p>\n
\/*————————————————————
\n \u7ed8\u5236\u4e09\u4e2a\u586b\u5145\u533a\u57df\u3002
\n 1. BLACK_PEN，LTGRAY_BRUSH，\u7ed8\u5236\u77e9\u5f62
\n 2. \u81ea\u5b9a\u4e49\u7ea2\u8272\u753b\u7b14，NULL_BRUSH，\u692d\u5706
\n 3. NULL_PEN，\u5907\u7528\u7070\u8272\u753b\u5237，\u5706\u89d2\u77e9\u5f62
\n \u6c34\u997a\u7f16\u7a0b，2026
\n ————————————————————*\/<\/p>\n
#include <windows.h><\/p>\n
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
\nvoid DrawRect(HDC hdc, RECT* pRect);
\nvoid DrawEllipse(HDC hdc, RECT* pRect);
\nvoid DrawRoundRect(HDC hdc, RECT* pRect, int nWidth, int nHeight);<\/p>\n
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
\n PSTR szCmdLine, int iCmdShow)
\n{
\n static TCHAR szAppName[] = TEXT("DrawPadRegion_Lx");
\n HWND hwnd;
\n MSG msg;
\n WNDCLASS wndclass;<\/p>\n
wndclass.style = CS_HREDRAW | CS_VREDRAW;
\n wndclass.lpfnWndProc = WndProc;
\n wndclass.cbClsExtra = 0;
\n wndclass.cbWndExtra = 0;
\n wndclass.hInstance = hInstance;
\n wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
\n wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
\n wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
\n wndclass.lpszMenuName = NULL;
\n wndclass.lpszClassName = szAppName;<\/p>\n
if (!RegisterClass(&wndclass))
\n {
\n MessageBox(NULL, TEXT("\u6ce8\u518c\u7a97\u53e3\u7c7b\u5931\u8d25！"),
\n szAppName, MB_ICONERROR);
\n return 0;
\n }<\/p>\n
hwnd = CreateWindow(szAppName, \/\/ window class name
\n TEXT("The DrawPadRegion_Lx Program"), \/\/ window caption
\n WS_OVERLAPPEDWINDOW, \/\/ window style
\n CW_USEDEFAULT, \/\/ initial x position
\n CW_USEDEFAULT, \/\/ initial y position
\n CW_USEDEFAULT, \/\/ initial x size
\n CW_USEDEFAULT, \/\/ initial y size
\n NULL, \/\/ parent window handle
\n NULL, \/\/ window menu handle
\n hInstance, \/\/ program instance handle
\n NULL); \/\/ creation parameters<\/p>\n
ShowWindow(hwnd, iCmdShow);
\n UpdateWindow(hwnd);<\/p>\n
while (GetMessage(&msg, NULL, 0, 0))
\n {
\n TranslateMessage(&msg);
\n DispatchMessage(&msg);
\n }
\n return msg.wParam;
\n}<\/p>\n
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
\n{
\n HDC hdc;
\n PAINTSTRUCT ps;
\n static RECT rect, rect_01, rect_02;
\n static int nWidth, nHeight;<\/p>\n
switch (message)
\n {
\n case WM_CREATE:
\n rect.left = 100;
\n rect.right = 400;
\n rect.top = 30;
\n rect.bottom = 230;
\n rect_01.left = rect.left + 400;
\n rect_01.right = rect.right + 400;
\n rect_01.top = rect.top;
\n rect_01.bottom = rect.bottom;
\n rect_02.left = rect.left;
\n rect_02.right = rect.right;
\n rect_02.top = rect.top + 230;
\n rect_02.bottom = rect.bottom + 230;
\n nWidth = nHeight = 60;
\n return 0;<\/p>\n
case WM_PAINT:
\n hdc = BeginPaint(hwnd, &ps);<\/p>\n
DrawRect(hdc, &rect);
\n DrawEllipse(hdc, &rect_01);
\n DrawRoundRect(hdc, &rect_02, nWidth, nHeight);<\/p>\n
EndPaint(hwnd, &ps);
\n return 0;<\/p>\n
case WM_DESTROY:
\n PostQuitMessage(0);
\n return 0;
\n }
\n return DefWindowProc(hwnd, message, wParam, lParam);
\n}<\/p>\n
void DrawRect(HDC hdc, RECT* pRect)
\n{
\n HPEN hPen, hOldPen;
\n HBRUSH hBrush, hOldBrush;
\n hPen = (HPEN)GetStockObject(BLACK_PEN);
\n hOldPen = (HPEN)SelectObject(hdc, hPen);
\n hBrush = (HBRUSH)GetStockObject(LTGRAY_BRUSH);
\n hOldBrush = (HBRUSH)SelectObject(hdc, hBrush);<\/p>\n
Rectangle(hdc, pRect->left, pRect->top,
\n pRect->right, pRect->bottom);<\/p>\n
SelectObject(hdc, hOldPen);
\n SelectObject(hdc, hOldBrush);
\n}<\/p>\n
void DrawEllipse(HDC hdc, RECT* pRect)
\n{
\n HPEN hPen, hOldPen;
\n HBRUSH hBrush, hOldBrush;
\n COLORREF color;<\/p>\n
color = RGB(255, 0, 0);
\n hPen = CreatePen(PS_SOLID, 0, color);
\n hOldPen = (HPEN)SelectObject(hdc, hPen);
\n hBrush = (HBRUSH)GetStockObject(NULL_BRUSH);
\n hOldBrush = (HBRUSH)SelectObject(hdc, hBrush);<\/p>\n
Ellipse(hdc, pRect->left, pRect->top,
\n pRect->right, pRect->bottom);<\/p>\n
SelectObject(hdc, hOldPen);
\n DeleteObject(hPen);
\n SelectObject(hdc, hOldBrush);
\n}<\/p>\n
void DrawRoundRect(HDC hdc, RECT* pRect, int nWidth, int nHeight)
\n{
\n HPEN hPen, hOldPen;
\n HBRUSH hBrush, hOldBrush;<\/p>\n
hPen = (HPEN)GetStockObject(NULL_PEN);
\n hOldPen = (HPEN)SelectObject(hdc, hPen);
\n hBrush = (HBRUSH)GetStockObject(GRAY_BRUSH);
\n hOldBrush = (HBRUSH)SelectObject(hdc, hBrush);<\/p>\n
RoundRect(hdc, pRect->left, pRect->top,
\n pRect->right, pRect->bottom,
\n nWidth, nHeight);<\/p>\n
SelectObject(hdc, hOldPen);
\n SelectObject(hdc, hOldBrush);
\n} <\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u5462，\u591a\u6570\u5730\u65b9\u5462，\u5e94\u8be5\u90fd\u4e0d\u96be\u3002\u4f46\u662f\u5462，\u8fd8\u662f\u6709\u8fd9\u4e48\u51e0\u4e2a\u5730\u65b9，\u6211\u9700\u8981\u6765\u6307\u51fa\u3002<\/p>\n
（\u4e00）DrawRect \u51fd\u6570\u8bb2\u89e3<\/h3>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828170845-6a91c09d7e3b9.png\")
<\/p>\n
\u56fe1 <\/p>\n
\u56fe1 \u4e2d，111 \u884c\u5230 114 \u884c，\u5206\u522b\u662f\u83b7\u53d6\u5907\u7528\u753b\u7b14\u4e0e\u753b\u5237，\u5e76\u4e14\u5c06\u5b83\u4eec\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002\u5728\u8fd9\u91cc\u5462，\u5728\u8c03\u7528 SelectObject \u7684\u65f6\u5019，\u6211\u90fd\u662f\u5c06\u8fd9\u4e2a\u51fd\u6570\u7684\u8fd4\u56de\u503c，\u7ed9\u4fdd\u5b58\u5728\u67d0\u4e2a\u53d8\u91cf\u91cc\u9762\u4e86\u3002\u6211\u5c06\u9009\u5165\u753b\u7b14\u7684 SelectObject \u51fd\u6570\u8c03\u7528\u7684\u8fd4\u56de\u503c\u8d4b\u7ed9\u4e86 hOldPen \u53d8\u91cf，\u5c06\u9009\u5165\u753b\u5237\u7684 SelectObject \u51fd\u6570\u8c03\u7528\u7684\u8fd4\u56de\u503c\u8d4b\u7ed9\u4e86 hOldBrush \u53d8\u91cf\u3002<\/p>\n
\u8fd9\u79cd\u5199\u6cd5，\u662f\u6211\u63a8\u8350\u7684\u5199\u6cd5\u3002\u5728\u4f69\u63aa\u5c14\u5fb7\u7684\u539f\u6559\u6750\u4e2d，\u597d\u591a\u65f6\u5019，\u4e5f\u662f\u91c7\u7528\u4e86\u8fd9\u79cd\u5199\u6cd5\u3002<\/p>\n
\u5199\u5565\u8981\u5c06 SelectObject \u51fd\u6570\u8c03\u7528\u7684\u8fd4\u56de\u503c\u7ed9\u4fdd\u5b58\u8d77\u6765\u5462？<\/p>\n
\u56e0\u4e3a，\u5f53\u6211\u4eec\u4f7f\u7528 GDI \u7ed8\u56fe\u51fd\u6570，\u753b\u5b8c\u4e86\u6211\u4eec\u60f3\u8981\u7ed8\u5236\u7684\u56fe，\u6216\u8005\u662f\u4f7f\u7528\u5b8c\u4e86\u67d0\u4e2a GDI \u5bf9\u8c61\u4ee5\u540e，\u6211\u4eec\u9700\u8981\u5c06\u8fd9\u4e2a GDI \u5bf9\u8c61\u7684\u53e5\u67c4，\u7ed9\u9009\u51fa\u8bbe\u5907\u73af\u5883\u3002\u5728\u56fe1 \u91cc\u9762，\u5f53\u6211\u4eec\u5728 116 \u884c\u8c03\u7528 Rectangle \u51fd\u6570，\u753b\u5b8c\u4e86\u77e9\u5f62\u4ee5\u540e，\u6211\u4eec\u4e34\u65f6\u83b7\u53d6\u7684\u5907\u7528\u753b\u7b14 BLACK_PEN \u548c \u5907\u7528\u753b\u5237 LTGRAY_BRUSH，\u5c31\u5b8c\u6210\u4e86\u5b83\u4eec\u7684\u7ed8\u56fe\u4efb\u52a1\u4e86\u3002\u5b8c\u6210\u4e86\u4ee5\u540e\u5462，\u6211\u4eec\u9700\u8981\u5c06\u5b83\u4eec\u9009\u51fa\u8bbe\u5907\u73af\u5883\u3002<\/p>\n
\u4e8e\u662f\u4e4e，\u6211\u4eec\u5c31\u5f97\u8c03\u7528 SelectObject \u51fd\u6570，\u4ee5 hOldPen \u4e3a\u53c2\u6570，\u5c06 BLACK_PEN \u7684\u753b\u7b14\u53e5\u67c4\u7ed9\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u800c\u5c06\u539f\u6765\u7684\u753b\u7b14\u53e5\u67c4\u7ed9\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002\u6211\u4eec\u8fd8\u5f97\u8c03\u7528 SelectObject \u51fd\u6570，\u4ee5 hOldBrush \u4e3a\u53c2\u6570，\u5c06 LTGRAY_BRUSH \u7684\u753b\u5237\u53e5\u67c4\u7ed9\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u800c\u5c06\u539f\u6765\u7684\u753b\u5237\u53e5\u67c4\u7ed9\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002<\/p>\n
\u901a\u8fc7\u5c06\u539f\u6765\u7684\u753b\u7b14\u53e5\u67c4\u9009\u5165\u8bbe\u5907\u73af\u5883，\u4e5f\u5c31\u540c\u65f6\u5c06\u73b0\u5728\u6b63\u5728\u4f7f\u7528\u7684\u753b\u7b14\u53e5\u67c4\u7ed9\u9009\u51fa\u8bbe\u5907\u73af\u5883\u4e86\u3002<\/p>\n
\u901a\u8fc7\u5c06\u539f\u6765\u7684\u753b\u5237\u53e5\u67c4\u7ed9\u9009\u5165\u8bbe\u5907\u73af\u5883，\u4e5f\u5c31\u540c\u65f6\u5c06\u73b0\u5728\u6b63\u5728\u4f7f\u7528\u7684\u753b\u5237\u53e5\u67c4\u7ed9\u9009\u51fa\u8bbe\u5907\u73af\u5883\u4e86\u3002<\/p>\n
\u6211\u4eec\u5b66\u4e60 Windows \u7a0b\u5e8f，\u90a3\u5c31\u9700\u8981\u5efa\u7acb\u4e00\u4e2a\u4e60\u60ef，\u67d0\u4e00\u4e2a GDI \u5bf9\u8c61，\u4f7f\u7528\u5b83\u5b8c\u6210\u4e86\u89c4\u5b9a\u7684\u7ed8\u56fe\u4efb\u52a1\u4ee5\u540e，\u8981\u53ca\u65f6\u5730\u5c06\u5b83\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u540c\u65f6\u5c06\u539f\u6765\u7684\u90a3\u4e2a\u5bf9\u8c61\u53e5\u67c4\u7ed9\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002<\/p>\n
\u4e5f\u5c31\u662f\u8bf4，\u5047\u5982\u6211\u4eec\u4f7f\u7528\u67d0\u4e00\u4e2a\u753b\u7b14，\u5b83\u7684\u53e5\u67c4\u88ab\u4fdd\u5b58\u5728 hPen \u4e4b\u4e2d，\u6b64\u753b\u7b14\u88ab\u9009\u5165\u8bbe\u5907\u73af\u5883\u4e4b\u65f6，SelectObject \u8fd4\u56de\u7684\u524d\u4e00\u4e2a\u753b\u7b14\u53e5\u67c4\u88ab\u4fdd\u5b58\u5728 hOldPen \u4e4b\u4e2d，\u90a3\u4e48，\u5f53 hPen \u753b\u7b14\u7684\u7ed8\u56fe\u4efb\u52a1\u5b8c\u6210\u4e86\u4ee5\u540e，\u8981\u53ca\u65f6\u5730\u901a\u8fc7\u51fd\u6570\u8c03\u7528\u3010SelectObject (hdc, hOldPen)\u3011，\u5c06 hPen \u7ed9\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u540c\u65f6\u5c06\u539f\u6765\u7684\u753b\u7b14\u53e5\u67c4 hOldPen \u7ed9\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002<\/p>\n
\u540c\u7406，\u5047\u5982\u6211\u4eec\u4f7f\u7528\u67d0\u4e00\u4e2a\u753b\u5237，\u5b83\u7684\u53e5\u67c4\u88ab\u4fdd\u5b58\u5728 hBrush \u4e4b\u4e2d\u56fd，\u6b64\u753b\u5237\u5457\u9009\u5165\u8bbe\u5907\u73af\u5883\u4e4b\u65f6，SelectObject \u8fd4\u56de\u7684\u524d\u4e00\u4e2a\u753b\u5237\u53e5\u67c4\u88ab\u4fdd\u5b58\u5728 hOldBrush\u00a0\u4e4b\u4e2d，\u90a3\u4e48，\u5f53 hBrush\u00a0\u753b\u5237\u7684\u7ed8\u56fe\u4efb\u52a1\u5b8c\u6210\u4e86\u4ee5\u540e，\u8981\u53ca\u65f6\u5730\u901a\u8fc7\u51fd\u6570\u8c03\u7528\u3010SelectObject (hdc, hOldBrush)\u3011，\u5c06 hBrush\u00a0\u7ed9\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u540c\u65f6\u5c06\u539f\u6765\u7684\u753b\u5237\u53e5\u67c4 hOldBrush\u00a0\u7ed9\u9009\u5165\u8bbe\u5907\u73af\u5883\u3002<\/p>\n
\u8fd9\u4e0d\u96be\u7406\u89e3\u3002\u597d\u6bd4\u751f\u6d3b\u4e2d，\u6211\u4eec\u60f3\u8981\u5403\u996d\u65f6，\u624d\u5c06\u996d\u83dc\u3001\u9171\u6cb9\u3001\u918b\u7b49\u7b49\u62ff\u5230\u996d\u684c\u4e0a\u3002\u5403\u5b8c\u4e86\u996d\u4ee5\u540e\u5462，\u6211\u4eec\u8fd8\u5f97\u5c06\u5176\u653e\u56de\u53bb，\u653e\u5230\u6a71\u67dc\u91cc\u6216\u8005\u51b0\u7bb1\u91cc\u3002<\/p>\n
Windows \u7f16\u7a0b\u7684\u8fd9\u79cd\u9009\u5165\u8bbe\u5907\u73af\u5883，\u4f7f\u7528，\u9009\u51fa\u8bbe\u5907\u73af\u5883\u7684\u6d41\u7a0b，\u6211\u89c9\u5f97\u5f88\u6709\u610f\u601d，\u5927\u5bb6\u5462，\u4e5f\u9700\u8981\u591a\u52a0\u4f53\u4f1a，\u591a\u52a0\u719f\u6089\u3002<\/p>\n
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（\u4e8c）DrawEllipse \u51fd\u6570\u8bb2\u89e3<\/h3>\n
\u5728\u8fd9\u4e2a\u51fd\u6570\u91cc\u9762\u5462，\u6211\u4eec\u91cd\u70b9\u770b\u4e0b\u56fe\u7684\u7ea2\u8272\u6846\u7ebf\u7684\u90e8\u5206\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828170845-6a91c09df1a76.png\")
<\/p>\n
\u56fe2 <\/p>\n
\u5728\u56fe2 \u91cc\u9762\u5462，\u6211\u53ea\u8bb2\u89e3\u7ea2\u8272\u6846\u7ebf\u6240\u793a\u7684 DeleteObject \u51fd\u6570\u7684\u4f7f\u7528\u3002\u5728\u56fe1 \u91cc\u9762，\u6211\u4eec\u5728\u7528\u5b8c\u4e86\u753b\u7b14 BLACK_PEN \u548c\u753b\u5237 LTGRAY_BRUSH \u4e4b\u540e，\u90fd\u7528 SelectObject \u51fd\u6570\u5c06\u5b83\u4eec\u7ed9\u9009\u51fa\u8bbe\u5907\u73af\u5883\u4e86\u3002\u800c\u5728\u56fe2 \u91cc\u9762，\u5728\u7ea2\u8272\u6846\u7ebf\u4e4b\u4e2d，\u5bf9\u4e8e\u753b\u7b14，\u7528\u5b8c\u4e86\u4ee5\u540e，\u4e0d\u4f46\u662f\u7528 SelectObject \u51fd\u6570\u5c06\u5176\u9009\u51fa\u4e86\u8bbe\u5907\u73af\u5883，\u800c\u4e14\u8fd8\u5c06 hPen \u753b\u7b14\u53e5\u67c4\u901a\u8fc7 DeleteObject \u51fd\u6570\u7ed9\u5220\u9664\u4e86\u5b83\u7684\u7ed1\u5b9a\u7684 GDI \u5bf9\u8c61\u3002<\/p>\n
\u8bf7\u95ee，\u4e3a\u5565\u5728\u56fe2 \u4e2d，\u5bf9\u4e8e\u753b\u7b14，\u8981\u7528 DelectObject \u5c06\u5176\u5220\u9664\u5462？\u4e3a\u5565\u56fe1 \u4e2d\u7684\u753b\u7b14，\u6ca1\u6709\u5220\u9664\u5b83\u7ed1\u5b9a\u7684\u753b\u7b14\u5bf9\u8c61\u5462？<\/p>\n
\u90a3\u662f\u56e0\u4e3a，\u5728\u56fe1 \u4e2d，\u6211\u4eec\u7528\u7684\u753b\u7b14 BLACK_PEN，\u5b83\u662f\u5907\u7528\u753b\u7b14，\u5bf9\u4e8e\u5907\u7528\u753b\u7b14，\u7528\u5b8c\u4e86\u4ee5\u540e，\u6211\u4eec\u9700\u8981\u7528 SelectObject \u51fd\u6570，\u6765\u5c06\u5176\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u4f46\u4e0d\u80fd\u5220\u9664\u5b83\u3002\u56e0\u4e3a\u5907\u7528\u5bf9\u8c61\u4e0d\u80fd\u5220\u9664\u3002\u800c \u56fe2 \u4e2d\u7684\u753b\u7b14，\u5b83\u4e0d\u662f\u5907\u7528\u753b\u7b14，\u800c\u662f\u6211\u4eec\u7528 CreatePen \u51fd\u6570，\u81ea\u5b9a\u4e49\u7684\u753b\u7b14\u3002\u5bf9\u4e8e\u81ea\u5b9a\u4e49\u7684\u753b\u7b14，\u7528\u5b8c\u4e86\u4ee5\u540e，\u4e0d\u4f46\u8981\u4f7f\u7528 SelectObject \u51fd\u6570，\u6765\u5c06\u5176\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u8fd8\u8981\u5728\u9009\u51fa\u4e86\u8bbe\u5907\u73af\u5883\u4ee5\u540e，\u7528 DeleteObject \u51fd\u6570，\u6765\u5c06\u5176\u7ed1\u5b9a\u7684 GDI \u5bf9\u8c61\u7ed9\u5220\u9664\u6389\u3002<\/p>\n
\u4e3a\u5565\u8981\u5220\u9664\u6389\u5462？\u5bf9\u4e8e\u81ea\u5b9a\u4e49\u753b\u7b14，\u4ee5\u53ca\u4ee5\u540e\u6211\u4eec\u8981\u53bb\u5b66\u4e60\u7684\u81ea\u5b9a\u4e49\u753b\u5237，\u7528\u5b8c\u4e86\u4ee5\u540e，\u5982\u679c\u4e0d\u5c06\u5176\u5220\u9664\u6389，\u5b83\u4eec\u5c31\u4f1a\u767d\u767d\u5730\u5360\u7528\u5185\u5b58，\u76f4\u5230\u7a0b\u5e8f\u5173\u95ed\u4ee5\u540e，\u5b83\u4eec\u5360\u7528\u7684\u5185\u5b58\u624d\u4f1a\u88ab\u91ca\u653e\u6389\u3002\u5bf9\u4e8e\u8fd9\u79cd\u7ec3\u4e60\u578b\u7a0b\u5e8f，\u6211\u4eec\u6240\u521b\u5efa\u7684\u81ea\u5b9a\u4e49 GDI \u5bf9\u8c61，\u6bd4\u5982\u753b\u7b14，\u5b83\u7684\u6570\u91cf\u8fd8\u4e0d\u662f\u5f88\u591a\u3002<\/p>\n
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\u90a3\u4e48，\u5728\u56fe2 \u6240\u793a\u7684\u51fd\u6570 DrawEllipse \u4e2d，\u4e3a\u5565\u5728 140 \u884c，\u5c06\u753b\u5237\u7528 SelectObject \u51fd\u6570\u9009\u51fa\u4e86\u8bbe\u5907\u73af\u5883\u4ee5\u540e，\u6ca1\u6709\u5220\u9664\u5b83\u5462？\u8fd8\u662f\u56e0\u4e3a，\u6211\u4eec\u5728 DrawEllipse \u4e2d，\u6211\u4eec\u6240\u7528\u7684\u753b\u5237\u00a0NULL_BRUSH，\u5b83\u662f\u4e00\u4e2a\u5907\u7528\u753b\u5237\u3002\u5bf9\u4e8e\u5907\u7528\u753b\u5237，\u7528\u5b8c\u4e86\u4ee5\u540e，\u9700\u8981\u5c06\u5176\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u4f46\u4e0d\u80fd\u5c06\u5b83\u5220\u9664\u3002<\/p>\n
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\u53e6\u5916\u5462，\u5728\u56fe1 \u548c\u56fe2 \u6240\u793a\u7684\u7a0b\u5e8f\u4e2d，\u5728\u83b7\u53d6\u5907\u7528\u5bf9\u8c61\u548c\u5c06\u5907\u7528\u5bf9\u8c61\u9009\u5165\u8bbe\u5907\u73af\u5883\u4e2d\u7684\u65f6\u5019，\u6211\u4eec\u5bf9 GetStockObject \u51fd\u6570\u548c SelectObject \u51fd\u6570\u7684\u8fd4\u56de\u503c，\u5747\u8fdb\u884c\u4e86\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362，\u7136\u540e\u624d\u662f\u5c06\u5176\u8d4b\u7ed9\u53e5\u67c4\u53d8\u91cf\u3002\u8fd9\u79cd\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362，\u4e5f\u662f\u9700\u8981\u5927\u5bb6\u6ce8\u610f\u7684\u3002<\/p>\n
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Windows \u7a0b\u5e8f，\u81ea\u6709\u5176\u4f7f\u7528\u7684\u4e13\u4e1a\u6d41\u7a0b\u4e0e\u79e9\u5e8f，\u8bf7\u5927\u5bb6\u9075\u5b88\u8fd9\u79cd\u79e9\u5e8f\u3002\u5373\u4f7f\u7a0b\u5e8f\u4e0d\u62a5\u9519，\u6211\u4eec\u4e5f\u8981\u517b\u6210\u826f\u597d\u7684\u7de8\u7a0b\u601d\u7ef4\u4e0e\u4e60\u60ef\u3002<\/p>\n<\/p>\n
\u4e09.\u00a0 \u00a0 \u672c\u8282\u4ee3\u7801\u7684\u7f16\u8bd1\u548c\u8fd0\u884c<\/h2>\n
\u6211\u5c06\u8fd9\u4e2a\u89e3\u51b3\u65b9\u6848\u4e0e\u9879\u76ee\u7684\u540d\u79f0，\u8bbe\u7f6e\u6210\u4e86\u00a0DrawPadRegion_Lx，\u5c06\u539f\u6587\u4ef6\u4f9d\u7136\u8bbe\u7f6e\u4e3a WinMain.cpp \u3002<\/p>\n
\u7136\u540e\u5462，\u5173\u4e8e\u7f16\u8bd1\u65b9\u6cd5，\u5982\u679c\u4f60\u5fd8\u4e86，\u53ef\u4ee5\u53c2\u8003\u4e0b\u9762\u7684\u4e24\u7bc7\u6587\u7ae0\u3002<\/p>\n
\u53c2\u8003\u8bfe\u8282：\u4f7f\u7528 VS2010 \u7f16\u5199 C\u8bed\u8a00\u7a0b\u5e8f<\/p>\n
\u53c2\u8003\u8bfe\u8282：\u7528 VS2019 \u7f16\u5199C\u8bed\u8a00\u7a0b\u5e8f<\/p>\n
\u672c\u8282\u4ee3\u7801\u7684\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828170846-6a91c09e30e58.png\")
<\/p>\n
\u56fe1 <\/p>\n
\u7ed3\u675f\u8bed<\/h2>\n
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\u56e0\u4e3a，\u6211\u8fd9\u4f1a\u513f，\u4e5f\u5199\u4e0d\u51fa\u6765\u592a\u96be，\u6c34\u5e73\u592a\u9ad8\u7684\u4ee3\u7801\u3002\u4e0d\u8fc7\u662f\u4e9b\u57fa\u7840\u7684\u4ee3\u7801\u800c\u5df2\u3002<\/p>\n
\u5f3a\u8c03\u4e00\u4e0b，\u5bf9\u4e8e\u5907\u7528\u753b\u7b14\u3001\u753b\u5237\u7b49\u7b49\u7684 GDI \u5bf9\u8c61，\u7528\u5b8c\u4e86\u4ee5\u540e，\u8981\u5c06\u5b83\u4eec\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u4f46\u4e0d\u80fd\u5220\u9664\u5b83\u4eec\u3002<\/p>\n
\u5bf9\u4e8e\u81ea\u5b9a\u4e49\u753b\u7b14\u3001\u753b\u5237\u7b49\u7b49\u7684 GDI \u5bf9\u8c61，\u7528\u5b8c\u4e86\u4ee5\u540e，\u8981\u5c06\u5b83\u4eec\u9009\u51fa\u8bbe\u5907\u73af\u5883，\u7136\u540e\u8fd8\u8981\u5c06\u5176\u5220\u9664\u6389\u3002\u9009\u51fa\u5728\u524d，\u5220\u9664\u5728\u540e，\u987a\u5e8f\u4e0d\u8981\u4e71\u6389\u3002<\/p>\n<\/p>\n
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\u53c2\u8003\u8bfe\u8282：MFC\u7b14\u8bb0：\u672c\u4e13\u680f\u8bfe\u4ef6<\/p>\n
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\u4e13\u680f\u5bfc\u822a<\/h2>\n
\u4e0a\u4e00\u7bc7：\u7b2c5\u7ae0，[Win32 \u7ae0\u8282] ：\u7ed8\u56fe\u6a21\u5f0f<\/p>\n
\u56de\u5230\u76ee\u5f55<\/p>\n
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