Windows程序设计第五版源代码---LINEDEMO

科技前沿 • 2025-03-09 22:45 • 阅读 23

大家好，我是讯享网，很高兴认识大家。

源代码如下：

#include <windows.h> LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int nCmdShow) { 
    static TCHAR szAppName[] = TEXT("LineDemo"); HWND hwnd; WNDCLASS wndclass; MSG msg; wndclass.style = CS_HREDRAW | CS_VREDRAW; wndclass.lpfnWndProc = WndProc; wndclass.cbClsExtra = 0; wndclass.cbWndExtra = 0; wndclass.hInstance = hInstance; wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); wndclass.lpszMenuName = NULL; wndclass.lpszClassName = szAppName; if(!RegisterClass(&wndclass)) { 
    MessageBox(NULL, TEXT ("Program requires Windows NT!"), szAppName, MB_ICONERROR); return 0; } hwnd = CreateWindow(szAppName, TEXT("Line Demonstration"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); ShowWindow(hwnd, nCmdShow); UpdateWindow(hwnd); while(GetMessage(&msg, NULL, 0, 0)) { 
    TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { 
    HDC hdc; PAINTSTRUCT ps; static int cxClient, cyClient; switch(message) { 
    case WM_SIZE: cxClient = LOWORD(lParam); cyClient = HIWORD(lParam); return 0; case WM_PAINT: hdc = BeginPaint(hwnd,&ps); Rectangle (hdc, cxClient/8, cyClient/8，7*cxClient/8, 7*cyClient/8); MoveToEx(hdc, 0, 0, NULL); LineTo(hdc, cxClient, cyClient); MoveToEx(hdc, 0, cyClient, NULL); LineTo(hdc, cxClient, 0); Ellipse(hdc, cxClient/8, cyClient/8, 7*cxClient/8, 7*cyClient/8); RoundRect(hdc, cxClient/4, cyClient/4, 3*cxClient/4, 3*cyClient/4, cxClient/4, cyClient/4); EndPaint(hwnd, &ps); return 0; case WM_DESTROY : PostQuitMessage(0); return 0; } return DefWindowProc(hwnd, message, wParam, lParam); }

讯享网

结果如下图：

讯享网

在这里插入图片描述

Windows程序设计第五版源代码---LINEDEMO

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