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08.31.2007 at 08:14AM PDT, ID: 22800128
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7.4

Where do my Windows Messages go ???

Asked by PC-Alex in Windows OLE Programming, Windows MFC Programming, ActiveX

Tags:

I am trying to find out where my windows messages go, I get no event at all when clicking with the mouse on a certain control.

Whenever a yellow tool tip comes up, I get no more messages around this tool tip. I tried using PreTranslateMessage in all kinds of classes involved, with no luck.

Strange: The Tool Tip class is a simple CWnd derived class; the "CTitleTip::OnMouseMove" event fires as desired, but CTitleTip::OnLButtonDown / CTitleTip::OnLButtonUp never fires. CTitleTip::PreTranslateMessage is never run through, even when the "CTitleTip::OnMouseMove" becomes active.
CTitleTip::OnMouseMove is directly called from CWnd::OnWndMsg, so this gives me no further clue why OnLButtonDown isn't.

I have tried so many things, I just need to know where my left mouse click event goes to. Of course I have checked all other OnLButtonDown functions in the complete project, none fires, and I have traces in all PreTranslateMessage functions, right at the start, as far as this function is used, with no clue.

I use an MFC Grid Control, see http://www.codeproject.com/miscctrl/gridctrl.asp, and have modified it in several ways. Most important, I packed it into an OCX file, for using it inside Visual Basic 6 inside the toolbox.

I suppose it might have to do with the way Visual Basic sends messages to an OCX control ?

I have uploaded the OCX project with C++ code, and with a minimal VB exe for just demonstrating the problem, on http://www.a-m-i.de/datagridctrl.zipStart Free Trial
[+][-]09.04.2007 at 02:55AM PDT, ID: 19823997

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About this solution

Zones: Windows OLE Programming, Windows MFC Programming, ActiveX
Tags: pretranslatemessage
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Solution Provided By: itsmeandnobodyelse
Participating Experts: 1
Solution Grade: B
 
 
[+][-]09.04.2007 at 03:03AM PDT, ID: 19824044

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[+][-]09.04.2007 at 04:11AM PDT, ID: 19824322

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