C++ 自身函数详解及应用：图形用户界面与多媒体

#include <windows.h>

// 窗口过程

LRESULT callBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

{

    switch (message)

    {

    case WM_DESTROY:

        PostQuitMessage(0);

        return 0;

    default:

        return DefWindowProc(hWnd, message, wParam, lParam);

    }

}

// 主函数

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpcmdLine, int nCmdShow)

{

    // 窗口类

    WNDCLASSEX wc;

    wc.cbSize = sizeof(WNDCLASSEX);

    wc.style = CS_HREDRAW | CS_VREDRAW;

    wc.lpfnWndProc = WndProc;

    wc.cbClsExtra = 0;

    wc.cbWndExtra = 0;

    wc.hInstance = hInstance;

    wc.hIcon = LoadIcon(NULL, IDI_appLICATION);

    wc.hCursor = LoadCursor(NULL, IDC_ARROW);

    wc.hbrBackground = (HBRUSH)COLOR_WINDOW;

    wc.lPSzMenuName = NULL;

    wc.lpszClassName = L"MyWindowClass";

    RegisterClassEx(&wc);

    // 创建窗口

    HWND hWnd = CreateWindowEx(0, L"MyWindowClass", L"My Window", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);

    ShowWindow(hWnd, nCmdShow);

    // 消息循环

    MSG msg;

    while (GetMessage(&msg, NULL, 0, 0))

    {

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

    return (int)msg.wParam;

}