MFC 菜单处理及消息截获（利用虚函数的特性实现）

最新推荐文章于 2021-02-20 13:13:07 发布

weiyong1999

最新推荐文章于 2021-02-20 13:13:07 发布

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分类专栏： C/C++/MFC widows系统

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本文详细介绍了如何在C++应用中通过代码实现鼠标右键菜单和弹出菜单的功能，包括加载菜单、屏幕定位和响应右键点击事件。

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鼠标右键菜单：

	CMenu menu;
	
	

	menu.LoadMenu(IDR_MENU1);

	CMenu *popup=menu.GetSubMenu(0);

	ClientToScreen(&point);
	popup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON,point.x,point.y,this);

	CView::OnRButtonDown(nFlags, point);

代码：

void CCMenuView::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	CClientDC dc(this);	
	if(nChar==0x0d)
	{
		if (++m_nCount==0)
		{
			m_Menu.CreatePopupMenu();
			GetParent()->GetMenu()->AppendMenu(MF_POPUP,(UINT)m_Menu.m_hMenu,"PhoneBook");
			GetParent()->DrawMenuBar();/*Whenever a menu that resides in a window is changed (whether or not the window is displayed), the application should call CWnd::DrawMenuBar*/
		}else
		{
			m_Menu.AppendMenu(MF_STRING,IDM_PHONE1+m_nCount-1,m_strline.Left(m_strline.Find(' ')));
			stringArray.Add(m_strline);	
			m_strline.Empty();
			Invalidate();
		}
	}else
	{
		m_strline+=nChar;
		dc.TextOut(0,0,m_strline);
	}
	CView::OnChar(nChar, nRepCnt, nFlags);
}


void CCMenuView::OnPhone1()
{
	MessageBox("view test");
}

void CMainFrame::OnUpdateEditCut(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	pCmdUI->Enable();
}


BOOL CMainFrame::OnCommand(WPARAM wParam, LPARAM lParam) 
{
	// TODO: Add your specialized code here and/or call the base class
	UINT nID = LOWORD(wParam);
	CCMenuView *pview=(CCMenuView*)GetActiveView();
	if (nID>=IDM_PHONE1 && nID<IDM_PHONE1+pview->stringArray.GetSize())
	{
		CClientDC dc(pview);

		dc.TextOut(0,0,pview->stringArray.GetAt(nID-IDM_PHONE1));
		return TRUE;
	}
	return CFrameWnd::OnCommand(wParam, lParam);
}