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Center on 800*600 and 640*480

Posted on 1999-01-19
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Last Modified: 2010-04-06
How can I center a button on a screen of 640*480, 800*600 and 1024*768 pixels.

Thanks a lot,
Vincent

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Question by:Vincentg
5 Comments
 
LVL 17

Accepted Solution

by:
inthe earned 10 total points
ID: 1362443
put the following on  form resize or form create:

procedure TForm1.FormResize(Sender: TObject);
begin
with Button1 do begin
Left:=(Parent.Width - Width) div 2;
Top :=(Parent.Height - Height) div 2;
end;
end;

Regards Barry
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Expert Comment

by:erajoj
ID: 1362444
Use this instead:
  with Button1 do SetBounds( (Parent.Width - Width) div 2, (Parent.Height - Height) div 2, Width, Height );
  or...
  with Button1 do SetBounds( (Screen.Width - Width) div 2, (Screen.Height - Height) div 2, Width, Height );

/// John
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LVL 17

Expert Comment

by:inthe
ID: 1362445
erajoj
why you say "use this instead" setbounds position is identical to my method on all sized screens/forms???
Regards Barry
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LVL 20

Expert Comment

by:Madshi
ID: 1362446
Vincent, if you've Delphi4, just use the anchor property to bind the component to each border...

Barry, if you set "left" and "top" seperately, the buttons is moved/updated/redrawed/checked/blabla/blabla two times.
If you call SetBounds, the button is only xxx one time.
I'm not sure, but I think, changing e.g. Left ends up in a call like this:
  SetBounds(newLeft,top,width,height);

Regards, Madshi.
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Author Comment

by:Vincentg
ID: 1362447
I want to thank all for there comments.

Vincent

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