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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.)
Parameters
-
wParam
- Must be zero.
-
lParam
-
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 value
No return value.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2003 [desktop apps only] |
| Header |
|