App remaining in Taskbar

Posted on 2003-02-24
Medium Priority
Last Modified: 2010-04-04
My problem is:
I am making a (DirectX)App in Delphi. For that, I want to set the
borderstyle of my mainform to 'bsNone'.
However, when I set it to bsNone, and I close my App,
the App is still in my taskbar (although the App is closed correctly,
it's just 1 strange block still remaining on the taskbar).
When I set borderstyle to bsSizeable or bsSingle, I have no problem.
How can I solve this? is this a Windows-bug? or a Delphi-bug?
Below are some solutions I've tried already but DIDN'T work (so please come with other solution(s)):
In Mainform-Destroy:
  MainForm.Visible := false;
In Mainform-Destroy;
In Mainform-Destroy:
  MainForm.Borderstyle := bsSizeable;
// Don't show the application Taskbar-button in taskbar
procedure HideAppInTaskbar;
var ExStyleApp : Cardinal;
  ExStyleApp := GetWindowLong(Application.Handle, GWL_EXSTYLE);
  ExStyleApp := ExStyleApp or WS_EX_TOOLWINDOW;
  SetWindowLong(Application.Handle, GWL_EXSTYLE, ExStyleApp);
// -----------------------------------------------


Martin Jochems
Question by:wimbaaijens
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Expert Comment

ID: 8007480
Try Application.Minimize

I asked this question here before, but my problem disappeared as mysteriously as it appeared... It's a windows bug (maybe 95-98).

Accepted Solution

User137 earned 300 total points
ID: 8007793

Author Comment

ID: 8014833
It works!
Do you know it's a Windows or a Direct X bug?

Expert Comment

ID: 8015047
Thanks for the points ;-)

According to what i've heard, its Windows bug, it happens without DirectX also i think.

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