read_value_async
Description:
public async unowned Value? read_value_async (Type type, int io_priority, Cancellable? cancellable) throws Error
Asynchronously request the drag operation's contents converted to the given type.
When the operation is finished callback will be called. You must then call [method@Gdk.Drop.read_value_finish] to get the
resulting `GValue`.
For local drag-and-drop operations that are available in the given `GType`, the value will be copied directly. Otherwise, GDK will try to use [ func@Gdk.content_deserialize_async] to convert the data.
Parameters:
| this |
a `GdkDrop` |
| type |
a `GType` to read |
| io_priority |
the I/O priority of the request. |
| cancellable |
optional `GCancellable` object, null to ignore. |
| callback |
callback to call when the request is satisfied |
| user_data |
the data to pass to callback function |