怎么获得任一窗口的指针

你创建的IDD_Dialog1对话框，调用的实例如果是dlg
就用dlg.GetDlgItem(控件ID)
如果实例是指针，就用dlg->GetDlgItem(控件ID)
还有一个更加万能的方法，就是从桌面开始一层一层的找你要找的窗口句柄，提供一段代码供参考：
	hWnd	= ::GetWindow( ::GetDesktopWindow(), GW_CHILD ); 
	while ( hWnd != NULL) 
	{ 
		memset( szTittleInfo , NULL , 255 );		
		::GetWindowText( hWnd, szTittleInfo , 255 );
		szInfo.Format( "%s" , szTittleInfo ) ;		
		if( szInfo.GetLength() > 0 )
		{
			if( szInfo.CompareNoCase( "YabooPanoramic - [四分镜头]") == 0 )
			{
				TarghWnd = hWnd ;
				break ;
			}
		}
		hWnd =::GetWindow( hWnd , GW_HWNDNEXT );
	}

	if( TarghWnd == NULL && m_CameraNo < 5 && m_nRunMode ==  1 )
	{
		AfxMessageBox( "没有找到应用程序!" );

		OnOK();
		//return FALSE ;
	
		return TRUE ;
	}

	m_AppHWnd	= TarghWnd ;

	//MdiClient ;
	hWnd		= ::GetWindow( TarghWnd , GW_CHILD ); 
	//子框架句柄
	hWnd		= ::GetWindow( hWnd , GW_CHILD ); 
	//视图句柄
	TarghWnd	= ::GetWindow( hWnd , GW_CHILD ); 

	int nValue ;
	hWnd = ::GetWindow( TarghWnd , GW_CHILD ); 
	while( hWnd != NULL )
	{
		szInfo.Format( "%d" , hWnd )  ;
		nValue = atoi( szInfo );
		if( nValueA == nValue )
		{
			m_wndCameraA = hWnd ;
			break ;
		}
		hWnd = ::GetWindow( hWnd , GW_HWNDNEXT ); 
	}

	hWnd = ::GetWindow( TarghWnd , GW_CHILD ); 
	while( hWnd != NULL )
	{
		szInfo.Format( "%d" , hWnd )  ;
		nValue = atoi( szInfo );
		if( nValueB == nValue )
		{
			m_wndCameraB = hWnd ;
			break ;
		}

		hWnd = ::GetWindow( hWnd , GW_HWNDNEXT ); 
	}

hWnd = ::GetWindow( TarghWnd , GW_CHILD ); 
	while( hWnd != NULL )
	{
		szInfo.Format( "%d" , hWnd )  ;
		nValue = atoi( szInfo );
		if( nValueA2 == nValue )
		{
			m_wndCameraA2 = hWnd ;
			break ;
		}
		hWnd = ::GetWindow( hWnd , GW_HWNDNEXT ); 
	}

	hWnd = ::GetWindow( TarghWnd , GW_CHILD ); 
	while( hWnd != NULL )
	{
		szInfo.Format( "%d" , hWnd )  ;
		nValue = atoi( szInfo );
		if( nValueB2 == nValue )
		{
			m_wndCameraB2 = hWnd ;
			break ;
		}

		hWnd = ::GetWindow( hWnd , GW_HWNDNEXT ); 
	}