Hit Test Return Values

This section lists the hit test code values that are returned in the pwHitTestCode parameter of the HitTestThemeBackground function. The code values returned depend on the hit test options specified in the dwOptions parameter of the HitTestThemeBackground function. For a list of the options, see Hit Test Options.

Return Values

The following table lists the hit test options and the corresponding return codes.

Option	Return codes	Description
HTTB_BACKGROUNDSEG	HTBOTTOM	Hit test succeeded in the bottom border segment.
	HTBOTTOMLEFT	Hit test succeeded in the bottom and left border intersection.
	HTBOTTOMRIGHT	Hit test succeeded in the bottom and right border intersection.
	HTCLIENT	Hit test succeeded in the middle background segment.
	HTLEFT	Hit test succeeded in the left border segment.
	HTNOWHERE	Hit test succeeded outside the control or on a transparent area.
	HTRIGHT	Hit test succeeded in the right border segment.
	HTTOP	Hit test succeeded in the top border segment.
	HTTOPLEFT	Hit test succeeded in top and left border intersection.
	HTTOPRIGHT	Hit test succeeded in the top and right border intersection.
HTTB_CAPTION	HTCAPTION	Hit test succeeded in the top, top left, or top right background segments.
	HTNOWHERE	Hit test succeeded outside the control or on a transparent area.
HTTB_FIXEDBORDER	HTBORDER	Hit test succeeded in any background segment except the middle background segment.
	HTCLIENT	Hit test succeeded in the middle background segment.
HTTB_RESIZINGBORDER	HTBORDER	Hit test failed in the middle background segment and resizing zones, but succeeded in a background border segment.
HTTB_RESIZINGBORDER_BOTTOM	HTBOTTOM	Hit test succeeded in the bottom border segment.
HTTB_RESIZINGBORDER_LEFT	HTLEFT	Hit test succeeded in the left border segment.
HTTB_RESIZINGBORDER_RIGHT	HTRIGHT	Hit test succeeded in the right border segment.
HTTB_RESIZINGBORDER_TOP	HTTOP	Hit test succeeded in the top border segment.