|Submitted on: 11/14/2001 3:14:27 AM |
By: Mark van Renswoude
By 2 Users
Compatibility:Delphi 5, Delphi 4, Pre Delphi 4
Users have accessed this article 4693 times.
| While looking at somebody else's code, I noticed he was doing all sorts of stuff with the MouseDown and MouseMove events. Here's a better way, it captures the WM_NCHITTEST message which Windows sends to make Windows think the user is clicking on the titlebar, thus moving the form...|
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TForm1 = class(TForm)
procedure WMNCHitTest(var Msg: TWMNCHitTest); message WM_NCHITTEST;
procedure TForm1.WMNCHitTest(var Msg: TWMNCHitTest);
// Call default procedure
// Modify result to make windows think we're
// clicking on the titlebar when we're actually
// clicking on the client area...
if Msg.Result = HTCLIENT then
Msg.Result := HTCAPTION;
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|Other User Comments|
|11/20/2001 12:59:11 PM:Paul Harrison|
What a wonderful explanation!
6 or 7 concepts are explained with 1
(oops, 2) lines of code.
|8/5/2002 12:11:25 PM:Earl|
Thank you. I was about to do that
MouseXXX thing too. This is MUCH
cleaner and simpler.
|10/17/2002 8:29:21 AM:Jason Myerscough|
How could I make this code work when I
click an image? instead of the form?
|3/17/2003 4:45:54 PM:|
How would i be able to test when a user
RIGHT clicks on the title bar only?
thus then displaying a POPUPMENU when
the user has done so?
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