appendmenu.cpp

C#一个实例源代码

// AppendMenu.cpp : Defines the entry point for the application.
//

 

#include "stdafx.h"
#include <windows.h>
#define IDM_SYS_ABOUT   1
#define IDM_SYS_HELP    2
#define IDM_SYS_REMOVE  3
#include <stdio.h>

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

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("SineWave") ;
     HWND         hwnd ;
     MSG          msg ;
     WNDCLASS     wndclass ;
	 HMENU    hMenu ;
     
     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  = NULL ;
     wndclass.lpszClassName = szAppName ;
          
     if (!RegisterClass (&wndclass))
     {
          MessageBox (NULL, TEXT ("Program requires Windows NT!"), 
                      szAppName, MB_ICONERROR) ;
          return 0 ;
     }
     
     hwnd = CreateWindow (szAppName, TEXT ("Testing AppendMenu"),
                          WS_OVERLAPPEDWINDOW,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          NULL, NULL, hInstance, NULL) ;
	 
     hMenu = GetSystemMenu (hwnd, FALSE) ;
     
     AppendMenu (hMenu, MF_SEPARATOR, 0,           NULL) ;
     AppendMenu (hMenu, MF_STRING, IDM_SYS_ABOUT,  TEXT ("About...")) ;
     AppendMenu (hMenu, MF_STRING, IDM_SYS_HELP,   TEXT ("Help...")) ;
     AppendMenu (hMenu, MF_STRING, IDM_SYS_REMOVE, TEXT ("Remove Additions")) ;
     

     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)
{
 
    HDC         hdc ;  
     int         i ;
     PAINTSTRUCT ps ;
	 RECT rect;
	 
     switch (message)
     {
 
  /*    case WM_PAINT:
		 rect.left=rect.top=30;
		 rect.right=rect.bottom=200;
          hdc = BeginPaint (hwnd, &ps) ; 
           Ellipse(hdc, 10, 10, 300, 100);   
           return 0 ;   
     case WM_DESTROY:
          PostQuitMessage (0) ;
          return 0 ;      */
		 
	 case WM_COMMAND:
          switch (LOWORD (wParam))
          {
          case IDM_SYS_ABOUT:
          case IDM_SYS_REMOVE:
          case IDM_SYS_HELP:
			   MessageBeep (0) ;
               return 0 ;}
               
     }
              
     return DefWindowProc (hwnd, message, wParam, lParam) ;

  }