Am I missing something?

Also, in Form OnShow, using setfocus on a tabsheet component gives an error message, but activecontrol:= works.

Not earthshaking, but now that Laz actually is usable perhaps now is the time to bring up the little things.

A. G.

03.11.12, 4:38, Ajeandro Gonzalo ?????:

Am I missing something?

All components are owned by TForm. Check for TTabSheet controlCount.

Best regards,
Paul Ishenin

Thank you, that works. It's curious that componentcount compiles for the tabsheet in the first place.

A. G.

Ajeandro Gonzalo wrote

Thank you, that works. It's curious that componentcount compiles for the tabsheet in the first place.

Can we see the code?

04.11.12, 2:10, Ajeandro Gonzalo ?????:

Thank you, that works. It's curious that componentcount compiles for the tabsheet in the first place.

TTabSheet can also own something. For example you can write the next code:

NewBtn := TButton.Create(TabSheet1);

After that a TabSheet1 will own a TButton and componentCount will show that.

At the same time you can place this button on another control:

NewBtn.Parent := TabSheet2;

Which result in showing of that Button on TabSheet2 which is owned by TabSheet1.

So TabSheet1.Components[] will contain NewBtn but TabSheet1.Controls[] will not have it and vice versa with TabSheet2.

Best regards,
Paul Ishenin

Thank you, that works. It's curious that componentcount compiles for the tabsheet in the first place.

Every TWinControl has both Components and Controls arrays, you cannot get compiler errors here. Components[] lists the controls *owned* by the TWinControl (Owner property), while Controls[] lists the controls which are visual children (sub-windows) of the control (Parent property).

The form designer adds all controls as owned by the form, but controls added by code can have different Owners. I'm not sure of other possible designers, which may add controls to other owners. E.g. a frame will own all its components, so that you never will find such controls in a form's lists.

DoDi