TCM_HITTEST  59U3_UQ 

The 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_HitTest1FC3JUE macro.

TCM_HITTEST

wParam = 0;    // not used; must be zero

lParam = (LPARAM) (TC_HITTESTINFO FAR *) pinfo; \\pointer to struct specifying position to test

Parameters

pinfo

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

Return Values

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

See Also