getsubmenu.cpp

C#一个实例源代码

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

#include "stdafx.h"

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

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

HINSTANCE hInst ;
TCHAR     szAppName[] = TEXT ("PopMenu") ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     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, szAppName) ;
     wndclass.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
     wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
     wndclass.lpszMenuName  = NULL ;
     wndclass.lpszClassName = szAppName ;
     
     if (!RegisterClass (&wndclass))
     {
          MessageBox (NULL, TEXT ("This program requires Windows NT!"),
                      szAppName, MB_ICONERROR) ;
          return 0 ;
     }
     
     hInst = hInstance ;
	 hMenu=LoadMenu(hInstance ,szAppName );
     
    hwnd = CreateWindow (szAppName, TEXT ("Testing GetSubMenu"),
                          WS_OVERLAPPEDWINDOW,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          NULL, hMenu, 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 HMENU hMenu , hMenuMain, hMenuEdit, hMenuFile,hMenuHelp,hMenuBackground;
    
	 static HMENU hMenu ;
	static int   idColor [5] = { WHITE_BRUSH,  LTGRAY_BRUSH, GRAY_BRUSH,
                                  DKGRAY_BRUSH, BLACK_BRUSH } ;
     static int   iSelection = IDM_BKGND_WHITE ;
     POINT        point ;
	  HINSTANCE    hInstance ;
     
     switch (message)
     {
     case WM_CREATE:
		  hInstance = (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE) ;
           
           
 /*         hMenuMain = LoadMenu (hInstance, TEXT ("NoPopUps")) ;
          hMenuFile = LoadMenu (hInstance, TEXT ("MenuFile")) ;
          hMenuEdit = LoadMenu (hInstance, TEXT ("MenuEdit")) ;
          hMenuHelp = LoadMenu (hInstance, TEXT ("MenuHelp")) ;
          hMenuBackground = LoadMenu (hInstance, TEXT ("Background")) ; 


		  SetMenu (hwnd, hMenuFile ) ;  */
		  hMenu = LoadMenu (hInst, szAppName) ;
          hMenu = GetSubMenu (hMenu, 0) ;    
          return 0 ;
   

     case WM_RBUTTONUP:
          point.x = LOWORD (lParam) ;
          point.y = HIWORD (lParam) ;
          ClientToScreen (hwnd, &point) ;
          
          TrackPopupMenu (hMenu, TPM_RIGHTBUTTON, point.x, point.y, 
                          0, hwnd, NULL) ;
          return 0 ;
          
     case WM_COMMAND:
          switch (LOWORD (wParam))
          {
          case IDM_FILE_NEW:
          case IDM_FILE_OPEN:
          case IDM_FILE_SAVE:
          case IDM_FILE_SAVE_AS:
          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_APP_ABOUT:
               MessageBox (hwnd, TEXT ("Testing GetSubMenu func\n")
                                 TEXT ("ok"),
                           szAppName, MB_ICONINFORMATION | MB_OK) ;
               return 0 ;
               
          case IDM_APP_EXIT:
               SendMessage (hwnd, WM_CLOSE, 0, 0) ;
               return 0 ;
               
          case IDM_APP_HELP:
               MessageBox (hwnd, TEXT ("Help not yet implemented!"),
                           szAppName, MB_ICONEXCLAMATION | MB_OK) ;
               return 0 ;
          }
          break ;
          
     case WM_DESTROY:
          PostQuitMessage (0) ;
          return 0 ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}