On Mar 17, 2009, at 8:41 AM, Jushin wrote:
I did further investigation and found the reason.
It was because the problem of "regsterForDraggedTypes"
I just wanted to filter out images, so I used following to define
types:
NSArray* types = (NSArray*)CGImageSourceCopyTypeIdentifiers();
and then set it as,
[tableView registerForDraggedTypes:types];
It didn't work. I only could make it work after I changed this to:
[tableView registerForDraggedTypes:[NSArray
arrayWithObjects:NSFilenamesPboardType,nil]];
So, how can I filter image files for drag and drop?
You will have to do some sort of validation in -validateDrop -- ie,
grab the filename(s), and make sure they have an extension or UTI that
matches what you want.
corbin
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