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Resolved Accessing the Window scroll event

  1. How-to
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  1. Robert Sawyer
    Robert Sawyer
  2. PowerBuilder
  3. Thursday, 27 June 2024 16:24 PM UTC

Is there a way to control / trigger the windows scroll event?

 

Let's say I have window_1. Window_1 has a vertical scroll bar.

I have 5 dw's lined up vertically on the window so I need a vertical scroll bar on the window to place/view all of the dw's. Dw_5 is not visible on the window until I scroll to the bottom of the window. How could I click on a button at the top of the window and have the window scroll to the dw at the bottom?

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Responses (2)
Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Thursday, 27 June 2024 17:42 PM UTC
  2. PowerBuilder
  3. # 1

Hi Robert;

  This code works for me ...

Int		li_loop
Parent.SetRedraw( FALSE )
FOR li_loop =1 to 20
	Send ( Handle ( Parent ), 277, 3, 0 )
next
Parent.SetRedraw( TRUE )

   The SEND command is sending a mouse click on the Scrollbar like you were requesting a page down. So I added a loop to simulate a page down enough times to get to the bottom of my test window. You may have to adjust the loop count to accommodate your window sizing.

HTH

Regards .. Chris

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Robert Sawyer
  1. Robert Sawyer
  2. Thursday, 27 June 2024 18:28 PM UTC
Thank you all again - this is very helpful.
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John Fauss
John Fauss Accepted Answer Pending Moderation
  1. Thursday, 27 June 2024 17:45 PM UTC
  2. PowerBuilder
  3. # 2

Hi, Robert -

Please check the Q&A thread referenced below for an alternative implementation that may meet your needs. It contains a small sample application:

    https://community.appeon.com/index.php/qna/q-a/how-to-scroll-vertically-on-user-object-using-powerscript

Best regards, John

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