Access User's Possible Screen Resolutions - C# 2010

Question

Thanks in advance for your help.

I am wondering how I might go about accessing the screen resolutions available on a user's PC. I would like to get a list of all available resolutions and also determine what the user is current running at.

Answer 1

I believe you can make a PInvoke call to EnumDisplaySettings api call in User32.dll.

[DllImport("user32.dll")]
public static extern bool EnumDisplaySettings (string deviceName, int modeNum, ref DEVMODE devMode );

See example here.

You'll of course run into complications with dual-monitor systems, but to get the current screen you can do

System.Windows.Forms.Screen.PrimaryScreen.Bounds.Width

I assumed you were talking about an executable and not an ASP.Net app, but if you need the screen size in Javascript, you can use the screen object.

screen.width; screen.height; screen.colorDepth; 

Answer 2

You could use the Microsoft.Win32 RegestryKey class to fetch the current screen size from the registry.

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Hardware Profiles...

I'd hunt around there to find what you want, but I wouldn't mess with whatever settings they have in there.

Answer 3

Laramie: I think you put me on the right track!

Found this link: http://www.pinvoke.net/default.aspx/user32.enumdisplaysettings