Asynchronously requests an input stream to read the this's contents from.
When the operation is finished callback will be called. You must then call [[email protected]_finish] to get the
result of the operation.
The clipboard will choose the most suitable mime type from the given list to fulfill the request, preferring the ones listed first.
| this |
a `GdkClipboard` |
| mime_types |
a null-terminated array of mime types to choose from |
| io_priority |
the I/O priority of the request |
| cancellable |
optional `GCancellable` object |
| callback |
callback to call when the request is satisfied |
| user_data |
the data to pass to callback function |