Wallpaper

 I just published small Go  project on GitHub:

https://github.com/jumbleview/decor

This is the program which takes jpeg picture as argument and set it as Windows desktop background.

Command line looks like this:

• decor.exe [-s] path_to_jpeg_file

It starts with single argument: path to jpeg file. If before an argument there is the flag -s program starts in silent mode (without console).

Program reads jpeg file, encodes it, crops image so it's width-to-height ratio matches width-to-height ratio of computer monitor, saves the image as bmp file and sets it as a screen background.

It is pure Go program. It should be compiled with command

go build -ldflags -H=windowsgui 

Using such flags allows to start without Windows console attached. Console is created dynamically or suppressed by flag -s.

This program allows to change background by desktop shortcut, batch file or schedule background change with Task scheduler.

Update on September 13, 2024.

One more project on GitHub:

https://github.com/jumbleview/picshuffle

It is more advanced version of background utility.  It starts with such  command:

• picshuffle.exe [-s] [-l] path_to_folder_or_jpeg_file

If argument is a path to a jpeg file program  works exactly as decor.exe.   

In case argument is a path to a directory with some jpeg files program reads content of directory and randomly picks one file from that directory to set it as a desktop background. Program tracks selected files in storage picshuffle.db so once selected file will not be selected again till all files from this directory are taken.

I personally use this program out of Windows task scheduler at log on event. Each time after a log on into the system  I see different background picture.

To track selected files program uses embedded key-value store  bolt  (go.etcd.io/bbolt). If started with flag [-l] program prints list of files used as a background within last 365 days.