Entry.setIconDragSource

void setIconDragSource(gtk.types.EntryIconPosition iconPos,  gdk.content_provider.ContentProvider provider,  gdk.types.DragAction actions)

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Sets up the icon at the given position as drag source.

This makes it so that GTK will start a drag operation when the user clicks and drags the icon.

`iconPos`	icon position
`provider`	a gdk.content_provider.ContentProvider
`actions`	a bitmask of the allowed drag actions