RAD Studio VCL Reference
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TPageControl.ActivePageIndex Property
TPageControl Class | TPageControl Members | ComCtrls Namespace | Description | See Also
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Specifies the page currently displayed by the page control.

Pascal
property ActivePageIndex: Integer;
C++
__property int ActivePageIndex;
Description

Use ActivePageIndex to get or set the active page by index rather than by object. The value of ActivePageIndex identifies a page in the Pages property array. Changing the value of ActivePageIndex changes the ActivePage property, and vice versa. 

If there is no active page, reading ActivePageIndex gives a value of -1. 

Setting ActivePageIndex to a value that is out of bounds (less than 0 or greater than PageCount - 1) results in the page control having no active page. 

 

See Also
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