This widget provides the facilities to select an icon. An icon is
displayed inside a button, when the button is pressed, an Icon
selector (a dialog with a GnomeIconSel widget) pops up to let the
user choose an icon. It also allows one to Drag and Drop the images
to and from the preview button.
Gets the file name of the image if it was possible
to load it into the preview. That is, it will only return a filename
if the image exists and it was possible to load it as an image.
ientry :
the GnomeIconEntry to work with
Returns :
a newly allocated string with the path or NULL if it
couldn't load the file