Asynchronously load, render and scale a symbolic icon previously looked up from the icon theme using IconTheme.lookupIcon.
For more details, see IconInfo.loadSymbolicForContext which is the synchronous version of this call.
a gtk.StyleContext
optional gio.Cancellable object, NULL to ignore
a GAsyncReadyCallback to call when the request is satisfied
the data to pass to callback function
3.8
Asynchronously load, render and scale a symbolic icon previously looked up from the icon theme using IconTheme.lookupIcon.
For more details, see IconInfo.loadSymbolicForContext which is the synchronous version of this call.