That is what I thought I saw a while ago too, so I wrote a mouse wheel
capture component back then to supplant the Form's WindowProc with my
own one. But that doesn't seem to work with this other component
(TVirtualTree). It doesn't do anything special, just has a method in
it's protected section for message CM_MOUSEWHEEL. But my old capture
component doesn't get the message anymore but the TVirtualTree does.
Phil.
Rohit Gupta wrote:
My interpretation of what I saw was different. I observed that the parent of
the component was getting the messages. So I simply got the parent panel
to pass them on as events to the component. This may or may not work for
you.
Date sent: Thu, 27 Jul 2006 09:17:51 +1200
From: Phil Middlemiss <[EMAIL PROTECTED]>
Organization: MTS Ltd
To: NZ Borland Developers Group - Delphi List <[email protected]>
Subject: [DUG] Capturing mouse wheel
Send reply to: NZ Borland Developers Group - Delphi List <[email protected]>
<mailto:[EMAIL PROTECTED]>
<mailto:[EMAIL PROTECTED]>
We have a component that can use the mouse wheel - unfortunately, we
also use another component (not ours) that uses the mouse wheel. The
standard windows convention seems to be that whatever window has the
focus gets to process the message first. So even though the mouse is
over our component when the mouse wheel is rolled, the other component
gets the message.
I seem to remember some time ago seeing how to replace the main
TApplication message handler with your own, but can't remember how now.
Is this possible? What is the technique?
Phil.
Regards
Rohit
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