C# Check orientation of second screen

Question

I have written a code which rotates my 3rd display.

Now I want to check first, in which orientation the display currently is.

I wrote the following code:

    int scrRectHeight = Screen.PrimaryScreen.Bounds.Height;
    int scrRectWidth = Screen.PrimaryScreen.Bounds.Width;

    if (scrRectHeight > scrRectWidth)
    {
        Display.Rotate(3, Display.Orientations.DEGREES_CW_90;
    }
    else
    {
        Display.Rotate(3, Display.Orientations.DEGREES_CW_180;
    }

This works fine, but it only works for the primary display. I can't find a definition to change it to a second display. How can I change it, or is there another method? Thanks!

Consider to not use PrimaryScreen if you meant to look at the properties of the second screen, Screen.AllScreens[1]. — Hans Passant, Dec 01 '18 at 14:00
@HansPassant I didn't understand how to use AllScreens. It's so simple! Thanks — Tim, Dec 01 '18 at 14:09
@HansPassant Could you add it as an answer so I can mark it? — Tim, Dec 01 '18 at 14:11
I have a hard time identifying the brain-bug in this code. Just share what you discovered in your own post and mark it as the answer. — Hans Passant, Dec 01 '18 at 14:16
[Using SetWindowPos with multiple monitors](https://stackoverflow.com/questions/53012896/c-sharp-user32-using-setwindowpos-with-multiple-monitors?answertab=active#tab-top) — Jimi, Dec 01 '18 at 19:03

Akiyoshi Tsuchida · Accepted Answer · 2018-12-01T14:17:25.993

2

There is not "SecondaryScreen" property.

Try this instead:

int secondRectHeight = Screen.AllScreens[1].Bounds.Height;
int secondRectWidth = Screen.AllScreens[1].Bounds.Width;

if (secondRectHeight > secondRectWidth)
{
    Display.Rotate(3, Display.Orientations.DEGREES_CW_90;
}
else
{
    Display.Rotate(3, Display.Orientations.DEGREES_CW_180;
}

edited Dec 01 '18 at 14:17

answered Dec 01 '18 at 14:09

Akiyoshi Tsuchida

158
1
8

Thanks, But this is to complicated. Look at Hans Passant comment. – Tim Dec 01 '18 at 14:10
Updated the sample. – Akiyoshi Tsuchida Dec 01 '18 at 14:18

C# Check orientation of second screen

1 Answers1