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How to find the TTabSheet in a pagecontrol, an active control is setting on Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
31-Oct-02
Category
VCL-General
Language
Delphi 2.x
Views
155
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Publisher:
DSP, Administrator
Reference URL:
DKB
			Author: Tomas Rutkauskas

How to find the TTabSheet in a pagecontrol, an active control is sitting on

Answer:

The forms ActiveControl property points to the active control on the form (if any, 
it may be Nil under certain circumstances). If you want to find the tabsheet in a 
pagecontrol, this controls is sitting on, you walk up its parent chain:

1   var
2     ctrl: TWinControl;
3   begin
4     if ActiveControl <> nil then
5     begin
6       ctrl := ActiveControl.Parent;
7       while (ctrl <> nil) and not (ctrl is TTabsheet) do
8         ctrl := ctrl.parent;
9       if ctrl <> nil then
10  {... found the tabsheet, can cast it as TTabsheet( ctrl ) to access 
11  its properties}


			
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