TCM_HITTEST message

Determines which tab, if any, is at a specified screen position. You can send this message explicitly or by using the TabCtrl_HitTest macro.

Parameters

wParam

Must be zero.

lParam

Pointer to a TCHITTESTINFO structure that specifies the screen position to test.

Return value

Returns the index of the tab, or -1 if no tab is at the specified position.

Requirements

Minimum supported client
Windows Vista [desktop apps only]
Minimum supported server
Windows Server 2003 [desktop apps only]
Header
Commctrl.h