用windows api写段c++代码

以下是一个简单的示例代码，使用Windows API创建一个简单的窗口，并在窗口中显示一条消息：

#include <Windows.h>

// 窗口过程函数 LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch (msg) { case WM_CLOSE: DestroyWindow(hwnd); break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hwnd, msg, wParam, lParam); } return 0; }

// WinMain函数 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { // 注册窗口类 WNDCLASS wc = {}; wc.lpfnWndProc = WndProc; wc.hInstance = hInstance; wc.lpszClassName = "MyWindowClass"; RegisterClass(&wc);

// 创建窗口
HWND hwnd = CreateWindow("MyWindowClass", "My Window", WS_OVERLAPPEDWINDOW,
    CW_USEDEFAULT, CW_USEDEFAULT, 640, 480, NULL, NULL, hInstance, NULL);
if (hwnd == NULL)
    return 0;

// 显示窗口
ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);

// 消息循环
MSG msg = {};
while (GetMessage(&msg, NULL, 0, 0))
{
    TranslateMessage(&msg);
    DispatchMessage(&msg);
}

return (int)msg.wParam;

}