Hi,
I want to write a program that automatically changes the windows desktop bakckground image using something like an image playlist. Is it possible to change the desktop background from a C# program, and if so how would I do that
Greetings,
El Loco
Changing the windows desktop background image
abc_acb
I'm not aware of managed methods to do so, but you can do so by calling one single unmanaged API: SystemParametersInfo from user32.dll. You must define the following signature:
[DllImport("user32.dll", CharSet=Charset.Auto, SetLastError=true)]
private static extern int SystemParametersInfo (int uAction, int uParam, string szImagePath, int fuWinIni);
A minimal implementation would be:
public bool ChangeWallpaper (string path) {
const int SPI_SETDESKWALLPAPER = 0x14; // constant code, from WinUser.h
const int SPIF_UPDATEINIFILE = 0x01; // will make your change permanent in the user profile
const int SPIF_SENDCHANGE = 0x02; // will inform all the windows that something has changed
int result = SystemParametersInfo (SPI_DESKWALLPAPER, 0, path, SPIF_UPDATEINIFILE| SPIF_SENDCHANGE);
return (result != 0);
}
(warning: untested code)
HTH
--mc