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Help with ShowMessagePos

Posted on 1998-08-29
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Last Modified: 2010-04-03
Could someone give me an example of how to get ShowMessagePos to center itself in the active form.

Thanks
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Question by:evel
5 Comments
 
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Expert Comment

by:ronit051397
ID: 1338123
Why don't you use MessageDlgPos?
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Expert Comment

by:viktornet
ID: 1338124
Here is an example from Delphi help file =)

procedure TForm1.Button1Click(Sender: TObject);
begin
  MessageDlgPos('Are you there?',mtConfirmation, mbYesNoCancel, 0, 200, 200);
end;

Regards,
Viktor Ivanov
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LVL 3

Expert Comment

by:vladika
ID: 1338125
All procedures (ShowMessage, MessageDlgPos etc) found on the function CreateMessageDialog
For details see dialogs.pas

So, I wrote procedure ShowMessageCenter.
You can use it instead of ShowMessagePos or you can modify it for your needs.

procedure ShowMessageCenter(const Msg: string);
var R: TRect;
begin
  if not Assigned(Screen.ActiveForm) then ShowMessage(Msg) else
  with CreateMessageDialog(Msg, mtCustom, [mbOK]) do
  try
    GetWindowRect(Screen.ActiveForm.Handle, R);
    Left := R.Left + ((R.Right - R.Left) div 2) - (Width div 2);
    Top := R.Top + ((R.Bottom - R.Top) div 2) - (Height div 2);
    ShowModal;
  finally
    Free;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  ShowMessageCenter('I am centered in the active form');
end;


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Author Comment

by:evel
ID: 1338126
Thanks vladika, that's just what I was looking for. Please answer the question so I can give you credit.
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Accepted Solution

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vladika earned 100 total points
ID: 1338127
Ok. This is my "official answer".

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