thumb size in scrollbar control
 

how do you change the thumb size in a scrollbar? it has a Proprotional Thumb
boolean property but nothing to set the size with. The LargeChange property
will change the size but in a very nonlinear way and it only goes to about
50%. I tried finding the control with some API calls (GetWindow etc.) but it
only shows system scrollbars. I'm using Excel 2002. Any answers?