write_mime_type_async
Description:
public virtual async bool write_mime_type_async (string mime_type, OutputStream stream, int io_priority, Cancellable? cancellable) throws Error
Asynchronously writes the contents of this to stream in the given mime_type.
When the operation is finished callback will be called. You must then call [method@Gdk.ContentProvider.write_mime_type_finish] to
get the result of the operation.
The given mime type does not need to be listed in the formats returned by [method@Gdk.ContentProvider.ref_formats]. However, if the given `GType` is not supported, `G_IO_ERROR_NOT_SUPPORTED` will be reported.
The given stream will not be closed.
Parameters:
| this |
a `GdkContentProvider` |
| mime_type |
the mime type to provide the data in |
| stream |
the `GOutputStream` to write to |
| io_priority |
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 |