set_preview_widget

Sets an application-supplied widget to use to display a custom preview of the currently selected file.

To implement a preview, after setting the preview widget, you connect to the update_preview signal, and call get_preview_filename or get_preview_uri on each change. If you can display a preview of the new file, update your widget and set the preview active using set_preview_widget_active. Otherwise, set the preview inactive.

When there is no application-supplied preview widget, or the application-supplied preview widget is not active, the file chooser will display no preview at all.

Parameters: