按钮自绘问题2mfc使用触发mousehover和mouseleave

MFCTRACKMOUSEEVENTmouseHover为框添加WM_MOUSEHOVER或WM_MOUSELEAVEvoidCmfcDlgDlg::OnMouseMove(UINTnFlags,CPointpoint){//TODO:在此添加消息处理程序代码和/或调用默认值//if(!m_bTracking){TRACKMOUSEEVENTtme;e=sizeof(TRACKMOUSEEVENT);tme.dwFlags=TME_LEAVE|TME_HOVER;//要触发的消息tme.hwndTrack=this->m_hWnd;tme.dwHoverTime=10;//若不设此参数，则无法触发mouseHoverif(::_TrackMouseEvent(&tme))//MOUSELEAVE|MOUSEHOVER消息由此函数触发{m_bTracking=true;}}CDialogEx::OnMouseMove(nFlags,point);}voidCmfcDlgDlg::OnMouseHover(UINTnFlags,CPointpoint){//TODO:在此添加消息处理程序代码和/或调用默认值GetDlgItem(IDC_BUTTON)->SetWindowText("Hover");_bTracking=false;CDialogEx::OnMouseHover(nFlags,point);}voidCmfcDlgDlg::OnMouseLeave(){//TODO:在此添加消GetDlgItem(IDC_BUTTON)->SetWindowText("Leave");m_bTracking=false;CDialogEx::OnMouseLeave();}本来打算自绘CButton，时间不足，总结一下这个知识点。随后研究一下MFC的自绘，可以制作非常牛的界面。 默认情况下，窗口是不响应WM_MOUSELEAVE和WM_MOUSEHOVER消息的，所以要使用_TrackMouseEvent函数来激定时间或离开窗口后，该函数会Post这两个消息到指定窗口。不断重复产生WM_MOUSEHOVER。BOOL_bMouseTrack=TRUE在OnMouseMove中调用_TrackMouseEvent函数if //若允许追踪，则。{TRACKMOUSEEVENTcsTME.cbSize=sizeofcsTME.dwFlags=TME_LEAVE|TME_HOVER;csTME.hwndTrack=m_hWnd;//指定要追踪的窗口csTME.dwHoverTime=10; //鼠标在按钮上停留超过10ms，才认为状态为::_TrackMouseEvent(//开启Windows的WM_MOUSELEAVE，WM_MOUSEHOVER支持_bMouseTrack=FALSE; //若已经追踪，则停止追踪}(#add摘自MSDN:The_TrackMouseEventfunctionpostsmessageswhenthemousepointerleavesawindoworhoversoverawindowforaspecifiedamountoftime.ThisfunctioncallsTrackMouseEventifitexists,otherwiseitemulatesit.)在OnMouseLeave中再次允许追踪鼠标状态_bMouseTrack=TRUE注意:也可以用下面代码在PreTranslateMessage函数中接收，不需要自己写WM_MOUSELEASE和WM_MOUSEHOVER消息if(pMsg->AfxMessageBox( leaveelseif(pMsg->message==WM_MOUSEHOVER)AfxMessageBos("mouseleave"); .h .cpp

{ }LRESULT CIconButton::OnMouseHover(RAM {POINTpoint;//亦用如下方法,推荐.OnMouseMove也可用.CPointpt;pt.x=LOWORD(lParam);//horizontalpositionofpt.y=HIWORD(lParam);//verticalpositionofPOINTpt={GET_X_LPARAM(lParam),Param)C } { }#ifndefON_WM_MOUSELEAVE#defineON_WM_MOUSELEAVE()\{WM_MOUSELEAVE,0,0,0,AfxSig_vv,\(AFX_PMSG)(AFX_PMSGW)\(static_cast<void(AFX_MSG_CALLCWnd::*)(void)>(*&ThisClass::*/OnMouseLeave))},#ifndefON_WM_MOUSEHOVER#defineON_WM_MOUSEHOVER()