TTM_HITTEST  15Q.8HQ 

The TTM_HITTEST message tests a point to determine whether it is within the bounding rectangle of the specified tool and, if the point is within, retrieves information about the tool.

TTM_HITTEST

wParam = 0;

lParam = (LPARAM) (LPHITTESTINFO) lphti;

Parameters

lphti

Pointer to a TTHITTESTINFO structure. When sending the message, the hwnd member must specify the handle of a tool and the pt member must specify the coordinates of a point. If the return value is TRUE, the ti member (a TOOLINFO structure) receives information about the tool that occupies the point. Before sending this message, you must set the cbSize member of the ti structure to sizeof(TOOLINFO).

Return Values

Returns TRUE if the tool occupies the specified point or FALSE otherwise.

See Also