I have been able to allow users to change the background of the database. It works great and it works no matter what computer they log onto the database from. I did have a problem with remote users so I added a macro that allows them to disable the functionality. It works great. It was a little complicated to se up initially. Some of the modules below may have more stuff contained in them then what is needed for the purpose of this question. But here is what I did to make it work:
Add the Following modules to your database: modChangeMDI, SetBackgroundImage, and clsCommonDialog
Link to a zip file containing the code for the above modules: http://www.filedropper.com/changebackgroundimage
You can set the default location that a users sees when the search for file dialog pops up. This is located in the ThisFileToOpen function of the SetBackgroundImage module.
clsCommonDialog <-- Used to open the find file dialog box
modChangeMDI <--Used to change the background image
Create a table called $BackgroundLocation with the following fields. On my database this is contained in the backend database.
ID (AutoNumber, Primary Key)
UserID (Text, Required, 250 in length, don't allow zero lengths)
BackgroundLocation (Text, 255 in length, not required)
DisableBackground (boolean)
Create an AutoExec macro and add an action that runs the code SetTheBackgroundPictureOnStartup (1)
Create a BackgroundDisableEnable macro and add an action that runs the code DisableEnableBackground()
Create a BackgroundSet macro and add an action that runs the code SetTheBackgroundPictureOnStartup(2)
Then assign the BackgroundDisableEnable and the BackgroundSet macro to their own menu item.
When the database opens it will run the AutoExec by default.