获得指定点的窗口

[yuan0716]

void CBDlg::OnButton3(UINT nFlags,CPoint point)
{
// TODO: Add your control notification handler code here
CWnd* cwnd=WindowFromPoint(point);
if(cwnd!=NULL)
{
if(IsChild(pWnd))
{
CString str=_T("");
cwnd->GetWindowText(str);
SetWindowText(str);
}
}
CDialog::OnMouseMove(nFlags,point);
}

BOOL CBDlg::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class
if(pMsg->message==WM_MOUSEMOVE)
{
CPoint point(LOWORD(pMsg->IParam),HIWORD(pMsg->IParam));
OnMouseMove(0,point);
}
return CDialog::PreTranslateMessage(pMsg);
}
这里的例子是跟着数做的，功能是运行时，移动光标将获得光标所在的窗口，要是窗口是子窗口，将获得该窗口的文本并将其设置成主窗口的标题。
调试的时候出错，有3个错误，在不知道哪里错了，请大家指教。

[youyifang]

把错误贴出来.

[fishion]

void CBDlg::OnButton3(UINT nFlags,CPoint point)
{
// TODO: Add your control notification handler code here
CWnd* cwnd=WindowFromPoint(point);
if(cwnd!=NULL)
{
if(IsChild(pWnd))
{
CString str=_T("");
cwnd->GetWindowText(str);
SetWindowText(str);
}
}
CDialog::OnMouseMove(nFlags,point); //去掉
}

在一个button事件中还有WM_MOUSEMOVE消息，这是什么回事

[yuan0716]

error C2511: 'OnButton3' : overloaded member function 'void (unsigned int,class CPoint)' not found in 'CBDlg'
c:\documents and settings\administrator\桌面\b\bdlg.h(14) : see declaration of 'CBDlg'
error C2039: 'IParam' : is not a member of 'tagMSG'
c:\program files\microsoft visual studio\vc98\include\winuser.h(1226) : see declaration of 'tagMSG'
error C2039: 'IParam' : is not a member of 'tagMSG'
c:\program files\microsoft visual studio\vc98\include\winuser.h(1226) : see declaration of 'tagMSG'

[shihaojie1219]

错误代码a

[feilinhe]

跟着做的，那就是要注意变电副哈偶的全角于半角了，等等的
出错了最好把错误代码贴出来~

[yuan0716]

去了也不行，我跟着书做的，这书错误太多了。

[youyifang]

第一个,OnButton3没有定义或者定义的参数类型和实现的参数类型不同,检查下
第二个,'IParam' 改成lParam,要注意大小写.
LZ转个开发工具吧,Visual.Assist.X,可以方便你编写代码.

[yuan0716]

谢谢帮忙，仔细查一下

[yhn353232494]

BOOL CDemo1Dlg::PreTranslateMessage(MSG *pMsg)
{
if(pMsg->message==WM_MOUSEMOVE)
{
CPoint point(LOWORD(pMsg->lParam),HIWORD(pMsg->lParam));
::ClientToScreen(pMsg->hwnd, &point);//客户坐标转换屏幕坐标

OnMouseMove(0,point);
}
return CDialog::PreTranslateMessage(pMsg);

}
并且删掉CDialog::OnMouseMove(nFlags,point);
你这里没有OnMouseMove
只有OnButton3