ok...... ..... If you have a ClieNX70v Handheld (based on what your sig has in it) .... your handheld should support the following formats for backgrounds to be used with ZLauncher:
I'm sure you are most aware of what a .bmp and .jpg image are .... so I'll skip down to what a .pdb image is (just in case you are unclear).
As you are probably aware..... PalmOS deals quite a bit with two distinct file types. One is a .prc (program for sake of argument) and another is a .pdb (database type file for sake of argument). These are the two major types of files that PalmOS deals with.
I've said this in many other threads ..... yet it seems nobody wants to go and 'read' archives... or other threads around here... so I'll try and say it once again.
Your PalmOS PDA doesn't actually 'read/use' the .bmp or .jpg images directly with ZLAuncher.... or even the .pdb native from the memory stick with ZLauncher. For a background to work .... it must be in .pdb format. For it to be 'active' it must also be in RAM.
Now ..... Lets take a scenerio where you have ZLauncher running but are NOT using a background image currently.
You have backgrounds stored in your /palm/programs/zlauncher/backimage directory on your MS in .bmp format.
You go to your Theme Manager and select a background (the list gets pulled from the above mentioned directory and anything in RAM/ROM (those would only be .pdb files).
You select imageA.bmp
You click on the 'OK' button.
What ZLAuncher does then is basically creates a 'copy' of the image and converts it into .pdb format. It them puts that 'copy' in your PDA's RAM.
ZLauncher will ONLY Utilize .pdb format for backgrounds so if the image is not already a .pdb background image ... it will make for itself a temporary copy and conversion to .pdb. Even if you want to use a background image which is already in .pdb format ... ZLauncher will STILL copy that image to RAM.
It places it in RAM and updates a file indicating which background should be active.
OK..... Now you have ZLauncher running .... with some theme (We shall call it ThemeA) and running background imageA.pdb.
No change to your original image has taken place. Once you can see ImageA background in ZLauncher you can go back to theme-manager and look for imageA. You will actually see there are now 2 entries in the BACKIMAGE section for this background. One will still show it is on the MS and the other will show it is in RAM and selected.
You decide you still like ThemeA but want to use ImageB.bmp instead for your background.
You simply go back to ThemeManager and select the ImageB.bmp image and click OK.
It does the same thing to ImageB.bmp as it did to imageA.bmp, but first it will remove the 'temporary copy' it placed in RAM called imageA.pdb. This is it's own 'cleanup' so your RAM doesn't get 'cluttered' with too many large background images.
It will replace ImageA.pdb with ImageB.pdb in RAM and update the necessary file indicating the new background to actually be active.
That is how it kinda all works.
If you do NOT have a Memory Stick/SD Card ..... you WILL be forced to only use .pdb background images. PalmOS doesn't really recognize .jpg and .bmp filetypes in it's PalmOS. Therefore you can't hotsync them into RAM. It will, however, allow you to install .pdb images directly into RAM. Whether it be a program, database, file, background-image ... it doesn't care. It still will allow the installation of a .pdb image into RAM but not a .jpg nor .bmp.
I hope this helps to clarify things some.