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How do I tell which monitor a form is on when there are more than 2 monitors

Posted on 2011-03-10
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Last Modified: 2012-06-27
Friends,

I have used a routine in the past to reopen a form on a dual screen setup; however, my company now has a four monitor setup where they run this app.

I tried the attached code, but I cannot make it work, it never correctly identifies the right monitor that the ResultViewerForm is on...

Even if I have the form on the second display, it shows that the display (i) is zero.

I want to use this saved in the application properties, to open subsequent forms in the same location/screen.

Thanks in advance!

When I run the attached code, here are my variables on the second loop through...:

            i      1      Integer
            String1      "\\.\DISPLAY2"      String
            String2      "\\.\DISPLAY1,"      String


The thing I don't understand is that String2 should say DISPLAY2, because that is the monitor it is on:

I guess what I need help with, is how do I get the form to tell me which screen it's on...
For i As Integer = 0 To Screen.AllScreens().Length - 1

            Dim String1 As String = stringtoasc(Screen.AllScreens(i).DeviceName.ToString)
            Dim String2 As String = stringtoasc(Screen.FromControl(ResultViewerForm).DeviceName.ToString)

            If String1 = String2 Then
                My.Settings.StartupLocation_Scrn = i
            End If

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Question by:indy500fan
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2 Comments
 
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Accepted Solution

by:
Bob Learned earned 500 total points
ID: 35102414
I would think that you could test if the form's location is within the working area of a Screen.

Untested example:

For Each screen As Screen In Screen.AllScreens
    If screen.WorkingArea.Contains(Me.Location) Then
    End If
Next screen

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Author Comment

by:indy500fan
ID: 35143127
Bob,

I'm glad you responded.  I'm going to test your suggestion, but I had to move on with a brute force solution.  Looking at it, I think it will work (you've not led me wrong in the past), so I will accept your suggestion as the solution.

Thanks,

Eric
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