TB_HITTEST message

Determines where a point lies in a toolbar control.

Parameters

wParam
Must be zero.
lParam

Pointer to a POINT structure that contains the x-coordinate of the hit test in the x member and the y-coordinate of the hit test in the y member. The coordinates are relative to the toolbar's client area.

Return value

Returns an integer value. If the return value is zero or a positive value, it is the zero-based index of the nonseparator item in which the point lies. If the return value is negative, the point does not lie within a button. The absolute value of the return value is the index of a separator item or the nearest nonseparator item.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2003 [desktop apps only]

Header

Commctrl.h

 

 

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