刚接触windows窗口程序记录主要两个函数

1.#include <windows.h>

窗口程序的重要头文件,必须导入

2.WinMain()

窗口主函数入口,此函数负责窗口属性的初始化,显示,更新,和消息分发的

int WINAPI WinMain(	 HINSTANCE hInstance,//应用程序实例句柄	 HINSTANCE hPrevInstance,//上一个应用程序句柄,在win32环境下,参数一般为null	 LPSTR lpCmdLine,	 int nShowCmd) ;

3.WindowProc()

此函数是消息处理函数,负责事件处理,比如窗口内容展示,窗口的按钮关闭等

LRESULT CALLBACK WindowProc(HWND hwnd,	UINT uMsg,	WPARAM wParam,	LPARAM lParam);

4.完整示例代码

#include <windows.h>  //消息处理函数LRESULT CALLBACK WindowProc(HWND hwnd,	UINT uMsg,	WPARAM wParam,	LPARAM lParam) {	int xPos, yPos;	char buf[100];	PAINTSTRUCT ps;	HDC hdc;	switch (uMsg)	{	case WM_CLOSE:		DestroyWindow(hwnd); //关闭窗口		break;	case WM_DESTROY:		PostQuitMessage(0);//退出程序		break;	case WM_KEYDOWN:		wsprintf(buf, TEXT("键盘ASCII = %d"), wParam);		MessageBox(hwnd, buf, TEXT("键盘"), MB_OK);		break;	case WM_LBUTTONDOWN:		xPos = LOWORD(lParam);		yPos = HIWORD(lParam);		wsprintf(buf, TEXT("X = %d,Y = %d"), xPos,yPos);		MessageBox(hwnd, buf, TEXT("鼠标"), MB_OK);		break;	case WM_PAINT: 		hdc = BeginPaint(hwnd, // handle to window						&ps); // paint information);		TextOut(hdc,0,0,TEXT("text"),strlen("text"));		EndPaint(hwnd, &ps);		break;	default:		break;	}	return DefWindowProc(hwnd, uMsg, wParam, lParam);}int WINAPI WinMain(//窗口主函数入口	HINSTANCE hInstance,//应用程序实例句柄	HINSTANCE hPrevInstance,//上一个应用程序句柄,在win32环境下,参数一般为null	LPSTR lpCmdLine,	int nShowCmd) //最大化 最小化{	WNDCLASS wc;	wc.cbClsExtra = 0;	wc.cbWndExtra = 0;	wc.hbrBackground = GetStockObject(WHITE_BRUSH);	wc.hCursor = LoadCursor(NULL, IDC_HAND);	wc.hIcon = LoadIcon(NULL, IDI_INFORMATION);	wc.hInstance = hInstance;	wc.lpfnWndProc = WindowProc;	wc.lpszClassName = TEXT("WIN");	wc.lpszMenuName = NULL;	wc.style = 0;	RegisterClass(&wc);//注册	HWND  hwnd = CreateWindow(		wc.lpszClassName, //lpClassName		TEXT("Hello"),   //lpWindowName		WS_OVERLAPPEDWINDOW, //dwStyle		CW_USEDEFAULT, //x, 		CW_USEDEFAULT, //y,		CW_USEDEFAULT, //nWidth		CW_USEDEFAULT,//nHeight		NULL,//hWndParent		NULL,//hMenu		hInstance,//hInstance		NULL);//lpParam	ShowWindow(hwnd, SW_SHOWNORMAL);	UpdateWindow(hwnd);	MSG msg;	while (1)	{		if (GetMessage(&msg, NULL, 0, 0) == FALSE) {			break;		}		TranslateMessage(&msg);		DispatchMessage(&msg);	}  return 0;}

5. Visual Studio代码结构 mWindows.c

6.运行效果

Thanks