Question

Strange Error: from Create automatically jump to ShowForm

Asked by: BdLm

I have to re-debug a once running application.
The Error is npw /recently like this:
from the from.Create function (Line #1) to execution immeadiatly jumps to FormShow,
then calling/executing line //2 and then not executing MYForm.Show; because the form is already
visible after Form.Create.
Any ggod idea what might be the reaon ?

Form Properties:

onCreate -> CreateFunction
onShow ->FormShow Function 

//1 
MyForm := MyForm.Create(Application)
 
//2
MYForm.firstProperty  := bla; 
MYForm.xxxProperty  := bla bla; 
 
MYForm.Show;

                                  
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Asked On
2009-07-01 at 14:44:36ID24537982
Topic

Delphi Programming

Participating Experts
4
Points
500
Comments
7

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Answers

 

by: JonasMalmstenPosted on 2009-07-01 at 15:15:42ID: 24758741

Look at the forms Visible property in the object inspector, it is probably set to True.

 

by: BdLmPosted on 2009-07-01 at 15:20:02ID: 24758778

It is a MDI Form, can't set visible to False :-(

 

by: JonasMalmstenPosted on 2009-07-01 at 15:25:08ID: 24758818

What are the properties you need to set before the form is shown?

 

by: dougaugPosted on 2009-07-01 at 15:30:46ID: 24758855

Does the form MyForm has the property formStyle = MdiChild?
If yes, maybe this is the cause, because MDIChild forms become visible when they are created.

Regards,

 

by: Geert_GruwezPosted on 2009-07-01 at 22:16:41ID: 24760613

check the OldCreateOrder property of the form
set it to false

override the constructor of the mdi child to set properties

  public
    constructor Create(AOwner: TComponent); override;
  end;

constructor TChildForm.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  // set properties here

  // visible becomes true before end (it calls formcreate first, then sets visible to true)
end;

 

by: EddieShipmanPosted on 2009-07-02 at 13:53:15ID: 24767614

Have you deleted all the DCU's and done a rebuild? Sounds like you may have an old DCU hanging out there in the path somewhere.

 

by: BdLmPosted on 2009-07-03 at 04:46:34ID: 24771746

may be I changed this Form from fsnormal to midchild without any further test ...., now changed the code , solution found

20120131-EE-VQP-002

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