API Error 8

[JohnS]

Thanks for some more suggesitons.

And yes I know about WinXP. The problem is I have been using some very useful, but old software that goes back to early 1990s, and runs under DOS. No windows version exists, and it is fast, a lot of commandline stuff. Version of Windows beyond XP still run some stuff slower. Latest is not always the best and fastest. And I understand why you would not test under WinXP--a waste of your time for sure

[JohnS]

I made a video (but could not atach it, so I made PICS of key frames) when I tried "smooth" option. Basicaslly, you can see the wallpaper change process begin, but then it aborts and even clears the current wallpaper to nothing. Maybe this will give you some ideas

Before WallpaperSSP command

vlcsnap-2017-05-19-10h44m21s436.jpg (51.17 KiB) Viewed 9454 times

As far as the change command would go

vlcsnap-2017-05-19-10h44m48s905.jpg (29.34 KiB) Viewed 9454 times

After change finished (aborted?), Previous wallpaper was now REMOVED! on all monitors!

vlcsnap-2017-05-19-10h44m51s561.jpg (29.54 KiB) Viewed 9454 times

[gpb]

It seems windows active desktop fails to set wallpaper, there is another (older) way to set a new wallpaper but currently wallpaperss uses it only when active desktop components are disabled. I don't remember how active desktop works on XP, anyway on next days I will prepare a WallpaperSS version that allows you to use the old method. It should work better.

[JohnS]

Oh, well, gee, THANKS!

But I think read on forum that this error also appeared on a non XP system??? Not sure. if so, your work may be useful for all users, not just me

[gpb]

Here is a version where you can disable active desktop:
http://www.gphotoshow.com/files/wpsprosetup-424.exe

Here are a couple of .reg files to disable/enable active desktop interface. Extract them from the zip file and double click on DisableActiveDesktop.reg, accept all security prompt from windows and start WallpaperSS.

DisableActiveDesktop.zip

(680 Bytes) Downloaded 985 times

[JohnS]

Ok I will test these. Thanks for all your great support. I'll get back to you

[JohnS]

Sorry for the long delay here. With the continual API error message I sort of had stopped using WPSSPro. I had downlaoded version 4.24 you gave, and also now have applied the DisableActiceDesktop registry setting, and am back to using WPSSPro on WinXP.

I will see if the API Error now goes away