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Resolved Getting Y position of MDI sheet relative to screen
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  1. Konstantin Goldobin
  2. PowerBuilder
  3. Monday, 14 April 2025 11:17 AM UTC

Hello,

It's a very basic PB question but somehow I haven't been able to find an answer. If it matters, I'm using PB 2019 R3.

I'm trying to move a window to the centre of an MDI sheet both horizontally and vertically. To do this, I need to get the X and Y position of the sheet relative to the screen. Adding the MDI frame's X and MDI_1's X to the sheet's X works just fine:

li_x = aw_sheet.x + mdi_frame.x + mdi_frame.mdi_1.x

However, the same approach does not seem to work for Y; the following returns the wrong value:

li_y = aw_sheet.y + mdi_frame.y + mdi_frame.mdi_1.y

I noticed two things:

1. The MDI_1.y is adjusted for the height of toolbars but not for the frame's title bar or menu bar height (I'm not using ribbons in the application, so I can't say anything about it). In other words, if toolbars are disabled or moved away from the top, mdi_1.y is 0. 

2. If the frame is maximized, its Y is -32.

Am I missing something obvious here? Do these two observations have a known explanation? And does anybody know a reliable way of getting the Y position of an MDI sheet relative to the screen?

Thanks!

K

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