Setting controls on invisible forms?

I want to set some controls on the invisible forms.
E.g. working on Form1 and

Form2.Button1.Enabled := false;
Form3.RadioGroup1.ItemIndex := 1;

Form2 and Form3 are created, but not visible.
None errors, but when looking  Form2 and Form3 these controls have not changed state.
How to....
Language is Delphi 7
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Sinisa VukSoftware architectCommented:
try put Form2.Button1.Refresh after set. But for such things I use very useful TAction assigned to Button and OnUpdate event check for some boolean state.
For second, try Form3.RadioGroup1.Update.  Check if you use OnShow or OnActivate to set these settings - because there you override them.

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There seems to be an unexpected code that sets the controls back. You need to find that. Post if non-sensitive code.

It should be straight forward. If the forms are created and the controls get changed they maintain the changes, even if the forms are invisible. Unless...
You initialize Form2 and Form3 somewhere that you overlooked.
Or you destroy and recreate those forms over and over.
ejla51Author Commented:
Yes it works but not entirely consistent for all controls. Either Refresh or Update - or both!
Actually, in my case these control states are added while reading values from the .Ini-file.
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