《Windows API》创建窗口

#include

HINSTANCE hIns;
LRESULT CALLBACK MainWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstace,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow) {
    //定义窗口类
    WNDCLASSEXA wcx;
    HWND hWnd;
    MSG msg;
    BOOL isGetMsg;
    hIns = hInstace;
    wcx.cbSize = sizeof(wcx);
    wcx.style = CS_HREDRAW | CS_VREDRAW;//窗口大小改变，重画窗口
    wcx.lpfnWndProc = MainWndProc;
    wcx.lpszClassName = "MainWndClass";
    wcx.cbClsExtra = 0;
    wcx.cbWndExtra = 0;
    wcx.lpszMenuName = NULL;
    wcx.hInstance = hInstace;
    wcx.hIcon = LoadIconA(NULL, IDI_APPLICATION);
    wcx.hCursor = LoadCursorA((HINSTANCE)NULL, IDC_ARROW);
    wcx.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);//自带的画刷
    wcx.hIconSm = (HICON)LoadImageA(hInstace, MAKEINTRESOURCEA(5), IMAGE_ICON, GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_DEFAULTCOLOR);
    if (!RegisterClassExA(&wcx)) {
        return 1;
    }
    //创建窗口
    hWnd = CreateWindowA("MainWndClass", "HerGhost", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL,hInstace,NULL);
    if (!hWnd)
        return 1;
    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);
    while ((isGetMsg = GetMessageA(&msg, NULL, 0, 0)) != 0) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return msg.wParam;
}
//窗口过程函数
LRESULT CALLBACK MainWndProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam) {
    switch (uMsg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
        break;
    default:
        return DefWindowProc(hwnd, uMsg, wParam, lParam);
        break;
    }
}