[xfdesktop] Where to start if I'm going to add thumbnail-showing functionalities or so?

[Jiason Li]

Hi all,

I was wondering how to add thumbnail-showing functionalities to xfdesktop,
are there any hints/docs/refs?

Where/Which file/Which line in the sources should I start digging into?

any info are appreciated. :-)

regards and thank you,
jiason
20090729