Hi, everyone.

I made a user object has 3 datawindows are aranged vertically. (Powerbuilder 2019 R3)

And I checked VScrollBar property of the user object to show vscrollbar.

But, I have to click the vscrollbar several times to move the bottom datawindow.

This is not comfortable,  I want to move quickly with using mouse wheel.

So, I wrote scripts in 'other event' of user object as below, but it is not working.

Is there any problem in this script?
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CONSTANT integer WM_MOUSEWHEEL = 522

IF message.number= WM_MOUSEWHEEL THEN
    message.processed = true

    if wparam/10000000 > 1 then // down wheel
        send(handle(this), 277, 3, 0)
    else
        send(handle(this), 277, 2, 0)
    end if
END IF

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I'm looking forward to your help.

Thanks.