Random Wallpaper

A utility for changing the desktop background image for in Windows

Usage

RndWallpaper [options] (file or folder) [ .. additional files and/or folders .. ]

Informational:
 -i                                     Show monitor information

Wallpaper:
 -d  (interface)                        Choose which interface to use
 -w  (integer)                          Delay number of seconds (default 0)
 -s  (style)                            Style of wallpaper (default 'Fill')
 -r                                     Include subdirectories when folder is specified
 -sa [ratio]                            Detect panorama images when w/h > ratio (default 2.0)
 -m  (monitor)                          Apply image only to a single monitor
 -rs (integer)                          Random seed value (default system suplied)
 -fs                                    When folder given, use same image for all monitors

Available Styles:
 1. Center
 2. Tile
 3. Stretch
 4. Fit
 5. Fill
 6. Span

Available Interfaces:
 2. Windows (V)irtual Desktop           Change wallpaper for Windows Virtual Desktop
 1. (W)indows Legacy                    Change wallpaper using Windows legacy api

Build

• see https://github.com/dotnet/runtimelab/tree/feature/NativeAOT/samples/HelloWorld
• dotnet publish -r win-x64 -c release

TODO

• add better messages for hresult errors
• add more platforms (linux?)
• add an option to choose sequential images instead of just random ones from a folder
• maybe add a change settings action
• add a way to change the lock screen also
  • what about the login screen ? (is that different ?)
• maybe add generators that keep state and advance each time the background is generated
  • could be several that can be cycled through
• maybe try UWP again. ?
  • https://blog.pieeatingninjas.be/2018/04/05/creating-a-uwp-console-app-in-c/
• maybe add support for custom fitting options
  • not sure what those would be
  • seam carving resize ?

Notes

• Virtual desktop interfaces constantly change :'( see these projects:
  • https://github.com/slnz00/VirtualDesktopDumper/tree/master
  • https://github.com/MScholtes/VirtualDesktop