Windows程序设计第五版源代码---MENUDEMO

源代码如下：

1 .c 文件如下：

#include <windows.h>
#include "resource.h"
#define ID_TIMER 1

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

TCHAR szAppName[] = TEXT ("MenuDemo");

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
{
    
        
	HWND         hwnd;    
	MSG          msg;    
	WNDCLASS     wndclass;
   	
   	wndclass.style           = CS_HREDRAW | CS_VREDRAW;    
   	wndclass.lpfnWndProc     = WndProc;    
   	wndclass.cbClsExtra      = 0;    
   	wndclass.cbWndExtra      = 0;    
   	wndclass.hInstance       = hInstance;    
   	wndclass.hIcon           = LoadIcon (NULL, IDI_APPLICATION);    
   	wndclass.hCursor         = LoadCursor (NULL, IDC_ARROW);    
   	wndclass.hbrBackground   = (HBRUSH) GetStockObject (WHITE_BRUSH);    
   	wndclass.lpszMenuName    = (LPCSTR)MenuDemo;    
   	wndclass.lpszClassName   = szAppName;
   	
   	if(!RegisterClass (&wndclass))    
   	{
    
            
   		MessageBox (NULL, TEXT("This program requires Window NT!"), 
   				szAppName, MB_ICONERROR);        
   		return 0;    
   	}
   	hwnd = CreateWindow (szAppName, TEXT("Menu Demonstration"),
   	                        WS_OVERLAPPEDWINDOW,                        
   	                        CW_USEDEFAULT,                        
   	                        CW_USEDEFAULT,                        
   	                        CW_USEDEFAULT,                        
   	                        CW_USEDEFAULT,                        
   	                        NULL, NULL, hInstance, NULL
   	                     );
   	ShowWindow (hwnd, iCmdShow);    
   	UpdateWindow (hwnd);
    	while (GetMessage (&msg, NULL, 0, 0))    
    	{
    
            
    		TranslateMessage (&msg);        
    		DispatchMessage (&msg);    
    	}
    return msg.wParam;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    
        
	static int idColor[5] = {
    
                                    
					WHITE_BRUSH, LTGRAY_BRUSH, GRAY_BRUSH,                                  	
					DKGRAY_BRUSH, BLACK_BRUSH  
                          	};    
	static int iSelection = IDM_BKGND_WHITE;    
	HMENU hMenu;

	switch (message)    
	{
    
        
	case WM_COMMAND:        
		hMenu = GetMenu(hwnd);                
		switch(LOWORD (wParam))        
		{
    
            
		case IDM_FILE_NEW:        
		case IDM_FILE_OPEN:        
		case IDM_FILE_SAVE:        
		case IDM_FILE_SAVE_AS:            
			MessageBeep(0);            
			return 0;                
		
		case IDM_APP_EXIT:            
			SendMessage(hwnd, WM_CLOSE, 0, 0);            
			return 0;                
		
		case IDM_EDIT_UNDO:        
		case IDM_EDIT_CUT:        
		case IDM_EDIT_COPY:        
		case IDM_EDIT_PASTE:        
		case IDM_EDIT_CLEAR:            
			MessageBeep(0);            
			return 0;
		
		case IDM_BKGND_WHITE:        
		case IDM_BKGND_LTGRAY:        
		case IDM_BKGND_GRAY:        
		case IDM_BKGND_DKGRAY:        
		case IDM_BKGND_BLACK:            
			CheckMenuItem(hMenu, iSelection, MF_UNCHECKED);            
			iSelection = LOWORD(wParam);            
			CheckMenuItem(hMenu, iSelection, MF_CHECKED);
			SetClassLong(hwnd, GCL_HBRBACKGROUND
			             (LONG)GetStockObject(idColor[LOWORD(wParam) - IDM_BKGND_WHITE]));            
			InvalidateRect(hwnd, NULL, TRUE);            
			return 0;
		
		case IDM_TIMER_START:            
			if(SetTimer(hwnd, ID_TIMER, 1000, NULL))            
			{
    
                    
				EnableMenuItem(hMenu, IDM_TIMER_START, MF_GRAYED);
				EnableMenuItem(hMenu, IDM_TIMER_STOP, MF_ENABLED);            			}            
			return 0;
		
		case IDM_TIMER_STOP:            
			KillTimer(hwnd, ID_TIMER);            
			EnableMenuItem(hMenu, IDM_TIMER_START, MF_ENABLED);
			EnableMenuItem(hMenu, IDM_TIMER_STOP, MF_GRAYED);         
			return 0;                    

		case IDM_APP_HELP:            
			MessageBox(hwnd, TEXT("Help not yet implemented!"),
			           szAppName, MB_ICONEXCLAMATION | MB_OK);            
			return 0;                    
		
		case IDM_APP_ABOUT:            
			MessageBox(hwnd, TEXT("Menu Demonstration Program\n")
			           TEXT("(c) Charles Petzold, 1998"),
			           szAppName, MB_ICONINFORMATION | MB_OK);            
			return 0;        
		}        
		break;
		case WM_TIMER:        
			MessageBeep(0);        
			return 0;    

		case WM_DESTROY:        
			PostQuitMessage(0);        
			return 0;    
		}    
	return DefWindowProc (hwnd, message, wParam, lParam);
}

2 建立资源文件（.rc文件） - - - 引入菜单
具体步骤如下（VC++ 6.0 环境）：

①在已建立MENUDEMO项目的前提下，点击左上角 文件----> 新建 出现如下图：

②右击资源文件夹 —> 点击插入

③选中 Menu —> 点击新建，新建一个菜单

④右击新建菜单 —> 点击最后一栏 属性 —> 填写菜单ID(与 此语句 菜单名字相同wndclass.lpszMenuName = (LPCSTR)MenuDemo;)

⑤双击新建菜单，添加菜单组件，如下图（&符号 代表生成下划线）：

⑥依次添加菜单组件（ID根据.c文件里面的ID编辑），如下图：

3 资源文件创建好后，对项目进行编译运行，VC++会自动生成 “resource.h” 文件 和 "MENUDEMO.rc"文件（这两个文件无需自己编写，VC++生成维护）。

4 结果如下图：