Main form appears when i openn a sub-sub form. :-(

[Ian Branch 128]

Hi Team,

Win 10, D10.4.  32 bit.

From my App main form, Form1, I open a sub-form, Form2, using TForm2.Create(nil).Show;

Whilst in the Form2 I may open a further sub-sub-form, Form3, from Form2 using TForm3.Create(nil).show;

When the Form3 opens the main form appears between Form2 & Form3. 😞

Is this an issue with D10.4?  I can't test previous versions anymore, my PC had a hardware meltdown and I had to reinstall everything, including the OS, from scratch. 😞  So I have only re-installed D10.4.

If it isn't specific to D10.4, is there a work around to stop the main form from showing?

I must confess, I don't understand why the main form is showing given as far as I know I haven't set any ownership by using ...Create(self).show.

Thoughts, suggestions, solutions, education welcome.

 

Regards & TIA,

Ian

[Remy Lebeau 1436]

How do you want the Forms to behave in relation to each other?  Do you want the MainForm to ever be able to appear on top of Form2?  If not, then set the MainForm as the PopupParent for Form2.  And set Form2 as the PopupParent for Form3, if you don't want Form2 to ever appear on top of Form3.  See this blog article: PopupMode and PopupParent.

Edited September 2, 2020 by Remy Lebeau

[Ian Branch 128]

HI Remy,

So.  It was education. 😉

Never ever looked at or used PopupMode or PopupParent.

To confess, I re-read the reference and the relevant Delphi help several times and was still unsure exactly what it was telling me.

So, I experimented.  I have ended up with Forms 1, 2 & 3 all set with PopupMode set to pmAuto and that resolves my issue.

Not sure if that is technically correct, but it works for me.

Thank you for the pointer/education.

 

Regards,

Ian