Most of these options can also be toggled with the /background command.
The Image Layout dropdown allows setting various layouts for the background image, default is usually Stretch.
Sets the background image for the MDI area (the area behind the window shown when a docked window is unmaximized)
Sets the background image for the textarea for Status/Channel/Query/Chat windows. (somewhat misleading name).
Sets the background image for the Menubar.
Sets the background image for the Toolbar.
Sets the background image for all Treebar buttons which is not a picture window.
Sets the background image for the Switchbar.
Sets the background image for all Switchbar buttons.
Sets the background image for the Treebar.
Disabled for now.
Sets the background image for all Nicklist's except custom window.
Sets the background image for the Statusbar.
When this option is enabled, the textarea of all status/channel/quuery/chat windows will be transparent down to the MDI area behind the window.
If the MDI area have a background image, the window will show a portion of this background image relative to the window location and size, else it will show the MDI area background color.
When this option is enabled, the MDI area will try to get the windows background image or color and use this as it's background,
If both the transparent main window and transparent windows option is enabled, it gives the illusion of transparency to the desktop.
When this option is enabled, nicklist of all channel windows will be transparent down to the MDI area behind the window.
