rcdemo.cpp

c++从入门到精通

#include <windows.h>
#include "resource.h"

//窗口过程函数声明
long WINAPI WndProc(HWND hWnd,UINT iMessage,
					WPARAM wParam,LPARAM lParam);
//对话框处理函数声明
BOOL CALLBACK DlgProc(HWND,UINT,WPARAM,LPARAM);		

HWND hDlg;				//定义对话框句柄
HINSTANCE hInst;		//定义应用程序实例句柄

int WINAPI WinMain(HINSTANCE hInstance,
				   HINSTANCE hPrevInstance,
				   LPSTR lpCmdLine,
				   int nCmdShow)	
{
	MSG Message;					//定义消息变量
	HWND hWnd;						//定义窗口句柄
	WNDCLASS WndClass;				//定义窗口类
	WndClass.cbClsExtra=0;			//无窗口类扩展
	WndClass.cbWndExtra=0;			//无窗口实例扩展
	//背景为白色
	WndClass.hbrBackground=(HBRUSH)(GetStockObject(WHITE_BRUSH));
	WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);//光标为为箭头
	WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);//采用缺省图标
	WndClass.hInstance=hInstance;		  //当前实例
	WndClass.lpfnWndProc=WndProc;		  //消息处理函数
	WndClass.lpszClassName="MenuInstance";//窗口类名称
	WndClass.lpszMenuName=NULL;//无菜单
	WndClass.style=0;//缺省窗口风格

	HMENU hmenu;
	hmenu=LoadMenu(hInstance,MAKEINTRESOURCE(IDR_MENU1));
	
	if(!RegisterClass(&WndClass))//注册窗口.
	{
		MessageBeep(0);			//注册失败发出警告声.
		return FALSE;
	}

	hWnd=CreateWindow("MenuInstance",		//窗口类名称
					"菜单设计程序",		 	//标题栏名称
					WS_OVERLAPPEDWINDOW,	//窗口样式.有标题栏和最大最小化按钮
					CW_USEDEFAULT,			//窗口左上角坐标
					0,
					CW_USEDEFAULT,			//采用自定义的高度和宽度
					0,
					NULL,					//无父窗口
					hmenu,					//自定义的菜单
					hInstance,				//当前应用实例句柄
					NULL);					//指向传递给窗口的参数的指针

	ShowWindow(hWnd,nCmdShow);				//显示窗口
	UpdateWindow(hWnd);						//刷新用户区
	hInst=hInstance;						//将应用程序句柄传递给全局变量

	while(GetMessage(&Message,0,0,0))
	{
		//若是对话框消息,发往对话框处理函数
		if(!IsDialogMessage(hDlg,&Message))		
		{
			TranslateMessage(&Message);	//消息循环
			DispatchMessage(&Message);
		}
	}
	return Message.wParam;
}

long WINAPI WndProc(HWND hWnd,
					UINT iMessage,
					WPARAM wParam,
					LPARAM lParam)
{
	switch(iMessage)
	{
	case WM_COMMAND:
		switch(LOWORD(wParam))
		{
		case IDM_NEW://点击New菜单
			MessageBox(hWnd,"你单击了新建菜单项",NULL,NULL);
			break;
		
		case IDM_OPEN://点击Open菜单
			MessageBox(hWnd,"你单击了打开菜单项",NULL,NULL);
			break;
		case IDM_SAVE://点击Save菜单
			MessageBox(hWnd,"你单击了保存菜单",NULL,NULL);
			break;

			
		case IDM_SAVEAS://点击SaveAsn菜单
			MessageBox(hWnd,"你单击了另存为菜单",NULL,NULL);
			break;

		case IDM_CLOSE:	//点击Close菜单
			MessageBox(hWnd,"你单击了关闭菜单",NULL,NULL);
			break;

		case IDM_EXIT://点击Exit菜单
			SendMessage(hWnd,WM_DESTROY,0,0);//发送退出消息
			break;
		}
		break;
	case WM_DESTROY://退出
		PostQuitMessage(0);
		break;
	default:
		return(DefWindowProc(hWnd,iMessage,wParam,lParam));
	}
	return 0;
}