Hi All,
I am Daniel Kovacs from GRAPHISOFT HQ Technical Support. Let me shed some light on what is happening here exactly!
First, in reply to Laszlo's question: The little arrow next to the Custom Picture field works on both Platforms, but it only appears if there's a picture in the loaded libraries to use. If the list would be empty anyways, the arrow won't even bother to appear.
Regarding the lists being full of unnecessary picture files, it is a matter of Library Management. If you only have the Default Libraries loaded you will see, that even though the Main ARCHICAD Library is full of textures and other picture files, there's nothing in the list, unless you load a picture into the Embedded Library yourself. That's because we use an Application query to get the names of the loaded pictures, and this query is designed in a way that it will only load pictures that are not in folders starting with the following tags: [TImg]*, [BImg]*, [UImg]*, or [HImg]*. ARCHICAD considers these folders to contain Texture images, Background images, UI images and HDR images (respectively), and leaves them out when browsing for "user loaded images".
If you are a GDL enthusiast, you can find this kind of query at the bottom of this page:
http://archicad-talk.graphisoft.com/viewtopic.php?t=57314
So, in R Muller's case, he probably has a lot of pictures/textures in his Loaded or Embedded Library, and these all show up in the list. If you put the pictures in folders named like defined above, they should not appear. Also, as Joachim Suehlo mentioned before me, if you start typing a texture's name, it will highlight in the list.
Have a good day,
Daniel Alexander Kovacs
Professional Services Consultant
GRAPHISOFT
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