c 如何新建一个窗口

在C语言中，创建一个窗口通常需要依赖于操作系统提供的图形界面库。以下是在Windows操作系统上使用Win32 API创建一个窗口的示例代码：

```c

include

// 全局变量声明

HINSTANCE hInst; // 当前实例句柄

LPCSTR szWindowClass = "MyAppClass"; // 窗口类名

// 窗口过程函数声明

ATOM MyRegisterClass(HINSTANCE hInstance);

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int APIENTRY WinMain(HINSTANCE hInstance,

HINSTANCE hPrevInstance,

LPSTR lpCmdLine,

int nCmdShow)

{

UNREFERENCED_PARAMETER(hPrevInstance);

UNREFERENCED_PARAMETER(lpCmdLine);

// 注册窗口类

MyRegisterClass(hInstance);

// 创建窗口

WNDCLASSEX wcex;

wcex.cbSize = sizeof(WNDCLASSEX);

wcex.style = CS_HREDRAW CS_VREDRAW;

wcex.lpfnWndProc = WndProc;

wcex.cbClsExtra = 0;

wcex.cbWndExtra = 0;

wcex.hInstance = hInstance;

wcex.hIcon = LoadIcon(hInstance, IDI_APPLICATION);

wcex.hCursor = LoadCursor(NULL, IDC_ARROW);

wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);

wcex.lpszMenuName = NULL;

wcex.lpszClassName = szWindowClass;

wcex.hIconSm = LoadIcon(wcex.hInstance, IDI_APPLICATION);

if (!RegisterClassEx(&wcex))

{

MessageBox(NULL, "Call to RegisterClassEx failed!", "Windows Error", MB_ICONEXCLAMATION MB_OK);

return 0;