ChildWindowFromPoint

I am using GetCursorPos(LPPOINT lpPoint) to get the position of the cursor.  Then I use ChildWindowFromPoint using the MainFrame.  For example

CMainFrame *pMainFrame = (CMainFrame *)AfxGetMainWnd();
CWnd *childWnd = pMainFrame->ChildWindowFromPoint(point);
if (childWnd )
   ...

The problem is that childWnd is not return NULL when point is not within a child window.  What's the problem?

How can I get the window under the mouse?


solomon021499Asked:
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prasanthCommented:
Here's the problem. GetCursorPos returns screen coordinates but ChildWindowFromPoint takes client coordinates.

So convert point from screen to client coordinates by calling
pMainFrame->ScreenToClient(&point);
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MikeP090797Commented:
If it's not within any child window, it will return the handle of the parent, so:
if (childWnd->m_hWnd!=parentWnd->m_hWnd) //Returned handle
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solomon021499Author Commented:
It's a good answer except that it does not work.  I get the same child window pointer whether I clicked in the main frame or the child frame, and it's not the main frame pointer.

I don't know why?
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