Version 1.8

The config file now supports the monitor index flag to set the wallpaper for a specific monitor (Windows 8 or higher).

When setting the monitor index in the config file the format of the line should be: <file> -m <index>

For example:

C:\wallpaper4.jpg -m 1

Version 1.7

Added the ability to set the wallpaper for a specific monitor (Windows 8 or higher).

When using the monitor option, the full syntax is:
-m <index> <file|directory> <location>

The index is 0 indexed - i.e. your first monitor is 0, the second monitor is 1, etc.

The style does not need to be specified since it appears to always default to Stretched. Note this functionality is only available on Windows 8 or higher.

Version 1.6

Changed to use png file for Windows 8 or higher, otherwise use bmp file.

On Windows 8 or higher it will use a png file for better quality. It seems Windows 7 and lower cannot use a png file directly so a bmp file is used instead. Note: On Windows 7 (and lower) if you are using extremely high resolution images then you may run into the "artifact" problem after Windows sets the file as the background. If you notice artifacts then my recommendation is to use a separate program to lower the resolution of the original image or try saving it as a different file type first (e.g. jpg).