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setsyscolors (user32)
 
.
Summary

C# Signature:

[DllImport("user32.dll")]
static extern bool SetSysColors(int cElements, int [] lpaElements,
   uint [] lpaRgbValues);

User-Defined Types:

None.

Notes:

This function changes the color for the current session only. To persist the change, you must update the registry keys at HKEY_CURRENT_USER\Control Panel\Colors

Tips & Tricks:

Please add some!

Sample Code:

[DllImport("user32.dll", SetLastError=true)]
public static extern bool SetSysColors(int cElements, int [] lpaElements, int [] lpaRgbValues);
public const int COLOR_DESKTOP = 1;

//example color
System.Drawing.Color sampleColor = System.Drawing.Color.Lime;

//array of elements to change
int[] elements = {COLOR_DESKTOP};

//array of corresponding colors
int[] colors = {System.Drawing.ColorTranslator.ToWin32(sampleColor)};

//set the desktop color using p/invoke
SetSysColors(elements.Length, elements, colors);

//save value in registry so that it will persist
Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("Control Panel\\Colors", true);
key.SetValue(@"Background", string.Format("{0} {1} {2}", sampleColor.R, sampleColor.G, sampleColor.B));

Alternative Managed API:

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Documentation

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