（C）第一個Windows 32 API的視窗程序（

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#include <windows.h>LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int ICmdShow) {    static TCHAR szAppName[] = TEXT("windowOfC");    HWND hwnd;//表單控制代碼變數    MSG msg;//訊息變數    WNDCLASS wndclass;//視窗類別變數    //配置視窗類別結構    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)COLOR_WINDOW;    wndclass.lpszMenuName = NULL;    wndclass.lpszClassName = szAppName;    //註冊視窗類別    if (!RegisterClass(&wndclass)) {        MessageBox(NULL, TEXT("註冊視窗類別失敗！"), szAppName, MB_ICONERROR);        return 0;    }    hwnd = CreateWindow(szAppName,        TEXT("C語言調用Windows API建立的視窗"),        WS_OVERLAPPEDWINDOW,        CW_USEDEFAULT,        CW_USEDEFAULT,        CW_USEDEFAULT,        CW_USEDEFAULT,        NULL,        NULL,        hInstance,        NULL);    ShowWindow(hwnd, ICmdShow);    UpdateWindow(hwnd);    while (GetMessage(&msg, NULL, 0, 0)) {        TranslateMessage(&msg);        DispatchMessage(&msg);    }    return msg.wParam;};//訊息處理方法，windows作業系統的回呼函數LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {    HDC hdc;    PAINTSTRUCT ps;    RECT rect;    switch (message) {    case WM_CREATE:        MessageBox(NULL, TEXT("建立視窗了！"), NULL, MB_ICONERROR);        return 0;    case WM_PAINT:        hdc = BeginPaint(hwnd, &ps);        GetClientRect(hwnd, &rect);        DrawText(hdc, TEXT("hello C windows "), -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);        EndPaint(hwnd, &ps);        return 0;    case WM_DESTROY:        PostQuitMessage(0);        return 0;    }    return DefWindowProc(hwnd, message, wParam, lParam);};

 

（C）第一個Windows 32 API的視窗程序（