Gets the filename that should be previewed in a custom preview widget. See gtk_file_chooser_set_preview_widget(). Since 2.4
the filename to preview, or NULL if no file is selected, or if the selected file cannot be represented as a local filename. Free with g_free(). [type filename]
See Implementation
Gets the filename that should be previewed in a custom preview widget. See gtk_file_chooser_set_preview_widget(). Since 2.4