Hi John;

  What about turning the vertical scroll bar off on the DW Control. Then add a separate Vertical Bar Control right beside the DW Control and then code it to handle the DWC scrolling via ScrollPos() command. I think that might give you the finite control that you might be looking for.

HTH

Regards ... Chris

Greetings, John -

pbm_vscroll is the PB identifier for the Windows WM_VSCROLL message ID. Here is a link to the explanation of WM_SCROLL:

https://docs.microsoft.com/en-us/windows/win32/controls/wm-vscroll

This Microsoft help topic refers to TYPEDEF's constants, which I found by performing a search of C/C++ Header files (*.h files) in the Visual Studio SDK. Their values are as follows:

#define SB_LINEUP 0
#define SB_LINELEFT 0
#define SB_LINEDOWN 1
#define SB_LINERIGHT 1
#define SB_PAGEUP 2
#define SB_PAGELEFT 2
#define SB_PAGEDOWN 3
#define SB_PAGERIGHT 3
#define SB_THUMBPOSITION 4
#define SB_THUMBTRACK 5
#define SB_TOP 6
#define SB_LEFT 6
#define SB_BOTTOM 7
#define SB_RIGHT 7
#define SB_ENDSCROLL 8

Regards, John