XFbd, the backdrop manager
          The XFCE Backdrop Manager is a separate program used to display XPM images in the root window.

          1) Starting XFBD
           

          XFBD
           
          XFBD provides a nice graphic interface to browse the various backdrops provided with XFCE.
          It can also be started without the interface, to automatically display the XPM (X Pixmap) image in the root window.
           
          • xfbd -d or just  xfbd alone will read the name of the file to display from the configuration file, and display it as a backdrop.

            • This option should be used in a login startup script, such as .login or .Xsession, or even in the FVWM configuration file (this is what is done in the examples provided with XFCE)
             
          • xfbd -i will start XFBD with the interactive interface shown above. This option is used whenever you want the user (yourself ?) to change the backdrop.
          XFBD writes the data in a separate configuration file, called .xfbdrc, located in the user's home directory.

          When started, XFBD searches for this file in the following order :

          • .xfbdrc In the user's home directory
          • .xfbdrc In /var/XFCE directory
          • sample.xfbdrc in /var/XFCE
          2) Usage

          You can type directly the name of a pixmap file, including its directory, if you know one. Instead, you might prefer to use the buttons :

          • "Ok" save the current selected file and exits
          • "Load" let you browse and select a pixmap file from the list of backdrops shipped with XFCE
          • "Apply" applies the current selected backdrop
          • "Clear" erase the selection. This option is used if you don't want XFBD to display any backdrop (if you've selected "Repaint root window of workspace" in the Setup configuration, for example.)
          • "Cancel" exits without saving the configuration file.

            Note : Please note that XFBD consumes a lot of colors, depending on the backdrop displayed, and therefore it should not be suitable with screen depth lower that 16 bit (ie less that  65535 colors)