【窗口編程】一個簡單的C語言窗口程序

#include <windows.h>
//回調函數
LRESULT CALLBACK WinProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
	switch(message)
	{
	case WM_CLOSE:
		DestroyWindow(hwnd);
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hwnd,message,wParam,lParam);
	}
	return 0;
}
//主函數入口
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR szCmdLine,int iCmdShow)
{
	TCHAR szname[]=TEXT("classname");
	HWND hwnd;
	MSG msg;
	ZeroMemory(&msg,sizeof(msg));
	WNDCLASS wndclass;
	wndclass.style=CS_HREDRAW | CS_VREDRAW;
	wndclass.lpfnWndProc=WinProc;
	wndclass.cbClsExtra=0;
	wndclass.cbWndExtra=0;
	wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
	wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
	wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
	wndclass.hInstance=hInstance;
	wndclass.lpszClassName=szname;
	wndclass.lpszMenuName=NULL;
	RegisterClass(&wndclass);//註冊窗口類
	hwnd=CreateWindow(szname,TEXT("窗口"),WS_OVERLAPPEDWINDOW ,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
	if(hwnd)
		ShowWindow(hwnd,SW_SHOW);
	else
	{
		MessageBox(NULL,TEXT("創建窗口失敗！"),TEXT("提示"),MB_OK);
		UnregisterClass(szname,hInstance);
		return 1;
	}
	UpdateWindow(hwnd);
	
	while(GetMessage(&msg,hwnd,0,0)>0)
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	UnregisterClass(szname,hInstance);
	return msg.wParam;
}

【編譯環境】：Visual Studio 2010