topic Re: Find absolute screen coordinates of ActiveView in ArcObjects SDK Questions

Find absolute screen coordinates of ActiveView

OlaRennemo — Thu, 24 Feb 2011 11:35:10 GMT

Hi all, I cant find the absolute screen coordinates of IMxDocument.ActiveView upper left corner.
Using dotnet:
If I try to obtain position via component reference: "System.Windows.Forms.Control.FromHandle(new IntPtr(ActiveView.ScreenDisplay.hWnd))" I get NULL.
I have a feeling this should be very simple, but maybe its not..
Thanks for any help!
-Ola

I forgot to mention: This is an ArcMap extension with a toolbar.

Re: Find absolute screen coordinates of ActiveView

RuchiraWelikala — Thu, 24 Feb 2011 13:26:54 GMT

http://www.scs.ryerson.ca/~cps613/AssignmentReferences/DragDrop.shtml#Coordinates

Would this work?

Re: Find absolute screen coordinates of ActiveView

maxsteinbrenner — Thu, 24 Feb 2011 16:15:08 GMT

try:

My.ArcMap.Document.ActiveView.Extent.XMin
My.ArcMap.Document.ActiveView.Extent.YMax

Re: Find absolute screen coordinates of ActiveView

OlaRennemo — Fri, 25 Feb 2011 06:21:55 GMT

http://www.scs.ryerson.ca/~cps613/AssignmentReferences/DragDrop.shtml#Coordinates

Would this work?

Not quite.
Mouse positions are not availible at the time I need them.

Re: Find absolute screen coordinates of ActiveView

OlaRennemo — Fri, 25 Feb 2011 06:25:23 GMT

try:

My.ArcMap.Document.ActiveView.Extent.XMin
My.ArcMap.Document.ActiveView.Extent.YMax

This gives me real world coordinates, not screen coordinates.
I can convert them the to screen coordinates, but they are always relative to the upper left corner of the map. So I need the map position as well...

Re: Find absolute screen coordinates of ActiveView

maxsteinbrenner — Fri, 25 Feb 2011 10:48:50 GMT

So I need the map position as well...

i think i am not understanding what you are trying to do but; those coordinates should be the upper left corner of the map...

Re: Find absolute screen coordinates of ActiveView

NeilClemmons — Fri, 25 Feb 2011 17:16:44 GMT

Have you tried using the display transformation object? It's available through IScreenDisplay.DisplayTransformation. It may give you what you're looking for.

Re: Find absolute screen coordinates of ActiveView

OlaRennemo — Mon, 28 Feb 2011 10:47:40 GMT

i think i am not understanding what you are trying to do but; those coordinates should be the upper left corner of the map...

I get map coordinates rater than screen coordinates... but I can convert them with IDisplayTransformation. But as I said, point(0,0) is upper left corner of the map window, not the screen.

I am making a ArcMap extension/toolbar. Maybe the results is different if called from a standalone application ?

Thansk for your effort anyway!