_SetWallpaper()

[w0uter]

Func _SetWallpaper($s_BitmapImage, $l_params = 0)
    $ai_Ret = DllCall('user32.dll', 'long', 'SystemParametersInfoA', 'long', 20, 'long', 0, 'str', $s_BitmapImage, 'long', $l_params)
    Return $ai_Ret[0]
EndFunc

code is using SPI_SETDESKWALLPAPER ( = 20)

[ryeguy]

why not just use the registry setting

[LxP]

Nice work Wouter! Could you please explain how to set $l_params and possibly share what return values we could expect?

why not just use the registry setting

Because this would not immediately update the desktop.

[blindwig]

Wow, this will come in handy for a project I was working on a while back. I had a bunch of different computers (all very similiar) and sometimes forgot which one I was looking at. I made a batch file to set the computers name on the desktop, but of course you had to either logout/logon or reboot for it to refresh (because all the batch did was modify a BMP file that was set as the dekstop wallpaper in the registery.

Does anyone know how to set the desktop to a JPG or HTML?

[ezzetabi]

The good old seach button...

About using non .bmp files the simplest idea is converting them using topng.

The basic idea is:

1- convert the non .bmp in a bmp with a different name.

2- set that bmp as background.

3- when you need to change, delete that bmp e restart at point one.

So the original file is preserved and only one file at time is in the .bmp format.

(This is the soultion 'Run!' uses)

Forget about .html since this UDF works only without active desktop.

Edited July 12, 2005 by ezzetabi

[busysignal]

Nice idea. It would be nice to use other types of graphic formats..

Cheers..

[blindwig]

well it seems that other graphics files can be put it:

HKEY_CURRENT_USER\Control Panel\Desktop\ConvertedWallpaper

and a HTML file can be put in:

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Desktop\General\Wallpaper

but there are binary timestamps to go along with them - don't know what those are for. Probaly should do this with a DLL call instead of straight to registry.