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
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2003 [desktop apps only] |
| Header |
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