TBM_GETCHANNELRECT Overview  Group

The TBM_GETCHANNELRECT message retrieves the size and position of the bounding rectangle for a trackbar’s channel. (The channel is the area over which the slider moves. It contains the highlight when a range is selected.)

TBM_GETCHANNELRECT
wParam = 0; 

lParam = (LPARAM) (LPRECT) lprc; 

 

Parameters

lprc

Pointer to a RECT structure. The message fills this structure with the channel’s bounding rectangle, in client coordinates of the trackbar’s window.

Return Values

No return value.

See Also

RECT