[ralfiii]

When I set the position of a scrollbar of a scrollbox (either TsScollBox or a skinned TScrollBox) then the content of the scrollbox is properly moved, but the scrollbar is not updated.

When I afterwards hover the mouse over the scrollbar it's updated and painted at the correct position.

Demo app attached…

(the right scrollbox in the demo is an unskinned TScrollBox, there it works)

Cheers!

[Support]

Thank you for the demo.

ScrollBox does not receives any messages about a scroll pos changing and we can't catch it.

You can use this manual scrolls updating while I'm in searching of solution:

uses acSBUtils;

with sScrollBox1.VertScrollBar do

Position := Position+10;

UpdateScrolls(sScrollBox1.ListSW, True);

[ralfiii]

Any news on that issue?

Now I do have a problem with a skinned VCL-scrollbox (so a TScrollbox).

When it's not skinned it works, when it's skinned it shows the same problem as the AC-scrollbox.

And with the standard VCL-component the workaround doesn't compile.

(I just tried with AC V8.53 – no improvement)

[Support]

I can't receive any message from system about changing of position.

You can use universal method for scrolls repainting:

SendMessage(sScrollBox1.Handle, WM_NCPAINT, 0, 0)

[ralfiii]

Top, that does the job.

Thanks!

[Author]

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