Solved how to set thumb size for MS form2 scrollbar

[CJ_London]

I have a need to use a scrollbar that has events - and the built in one doesn't generate an event. I can use the form mousewheel event but users typically like to use a scrollbar for moving rapidly from top to bottom.

I can get the form2 scrollbar to work, but I can't see how to associate the control with a form to allow the thumb to be proportional (plus rather annoyingly the thumb can flash black)- or some other property to do the same - it looks a bit odd when compared with the standard scrollbar.

Alternatively, I can build my own - three examples below. On the left, the built in bar, the form2 version in the middle and a concept on the right

So before spending more time, thought it worth asking if anyone knows if the form2 thumb can be resized. And any thoughts about a custom design - I guess I could create one that looks like the standard bar (but they are a bit old fashioned)

 

[ComputerVersteher]

Why not use a timer with the build-in scrollbar and check if position changed, similar to https://isladogs.co.uk/subform-sync-scroll/index.html ?

MS-Forms Scrollbar has a ProportionalThumb property.

 

[CJ_London]

I did look at using a timer some time ago but dismissed it as I’m using it for something else. But thinking about it there may be another way using a timer class.

thanks for the memory jog

 

[CJ_London]

MS-Forms Scrollbar has a ProportionalThumb property.

just noticed this comment - yes I know, but so far as I can see there is no way to set it size, documentation suggests it need to be associated with a form - but just found an example

Change the size of scrollbar in winforms

I want to change the size of the actual bar/thumb part of the scrollbar in winforms but I can't find a way to do this. The thumb is about 1/10 of the actual scroll area regardless of how much ther...

stackoverflow.com

 

[ComputerVersteher]

Size can be set by defining Scrollbar.Min, Scrollbar.Max Properties.

 

[CJ_London]

Yes - that is what the link I provided shows -it's actually the smallchange/largechange properties

just have the problem of the thumb flashing when the mouse is not down and the focus is still on the scrollbar control