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TabCtrl_SetItemExtra

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This macro sets the number of bytes per tab reserved for application-defined data in a tab control. You can use this macro or send the TCM_SETITEMEXTRA message explicitly.

BOOL TabCtrl_SetItemExtra( 
HWND hwnd, 
int cb );

Parameters

  • hwnd
    Handle to the tab control.
  • cb
    Number of extra bytes.

Return Values

TRUE indicates success. FALSE indicates failure.

Remarks

By default, the number of extra bytes is four. An application that changes the number of extra bytes cannot use the TCITEM structure to retrieve and set the application-defined data for a tab. Instead, you must define a new structure that consists of the TCITEMHEADER structure followed by application-defined members.

An application should only change the number of extra bytes when a tab control does not contain any tabs.

Requirements

Runs on Versions Defined in Include Link to
Windows CE OS 1.0 and later Commctrl.h    

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

TCM_SETITEMEXTRA, TCITEM, TCITEMHEADER

 Last updated on Tuesday, July 13, 2004

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