This should work, but should probably build in a few more "checks" in the loop.
Like check if there's a bitmap in the currently editted movieclip in the 
specified frame.

What this does is:
- loop through the items in the library
- check if current item is a movieclip (not a bitmap as you did)
- if movieclip, select it and enter edit mode
- get the movieclip timeline and set the elements  in its first frame/first 
layer as document selection
// here is where you should check if the above selection contains a bitmap
- trace bitmap


var doc = fl.getDocumentDOM();
var library = doc.library;
var items = library.items.concat();

i = items.length;

while (i--) {
var item = items[i];
fl.trace("itemType: " + item.itemType);
if (item.itemType == 'movie clip') {
 library.selectItem(item);
 library.editItem();
 var timeline = item.timeline;
 fl.trace("    - frameCount: " + timeline.frameCount);
 doc.selection = timeline.layers[0].frames[0].elements;
 doc.traceBitmap(100, 1, 'pixels', 'normal');
}
}
doc.exitEditMode();


regards,
Muzak

----- Original Message ----- From: "Jiri" <jiriheitla...@googlemail.com>
To: "Flash Coders List" <flashcoders@chattyfig.figleaf.com>
Sent: Monday, February 09, 2009 9:47 AM
Subject: [Flashcoders] Help jsfl traceBitmap


Hello,

i was wondering if someone can help me out with the following.
I have a the maintimeline with on it a movieclip. Inside this movieclip is a png, that I would like to trace as a bitmap.

I can't seem to target the png that is nested in the movieclip. If i understand correctly I will first need to get it the timeline of the png holder clip from the library and then select the frame. Here is my code which throws a "selection: Argument number 1 is invalid."

var doc = fl.getDocumentDOM();
var library = doc.library;
var items = library.items.concat();

i = items.length;


while (i--)
{
    var item = items[i];
    if (item.itemType == 'bitmap')
    {
        var imageName = item.name.split('.')[0];
        var image = doc.getTimeline().layers[0].frames[0].elements[0];
doc.selection = image
doc.traceBitmap(100, 100 , 'normal' , 'normal');
    }
}

Hope someone can help!

Jiri
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