TRBN_THUMBPOSCHANGING notification code
Notifies that the thumb position on a trackbar is changing. This notification code is sent in the form of a WM_NOTIFY message.
TRBN_THUMBPOSCHANGING
lpNMTrbThumbPosChanging = (NMTRBTHUMBPOSCHANGING*) lParam;
Parameters
-
lParam
-
Pointer to a NMTRBTHUMBPOSCHANGING structure. The caller is responsible for allocating this structure and setting its members, including the members of the contained NMHDR structure.
Return value
Return TRUE to prevent the thumb from moving to the specified position.
Remarks
Send this notification to clients that do not listen for WM_HSCROLL or WM_VSCROLL messages.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2008 [desktop apps only] |
| Header |
|