gtk/gtk.go
func (v *FileChooser) GetPreviewFilename() string {
	c := C.gtk_file_chooser_get_preview_filename(v.native())
	defer C.free(unsafe.Pointer(c))
	return C.GoString(c)
}
func (v *FileChooser) GetPreviewFilename() string {
	c := C.gtk_file_chooser_get_preview_filename(v.native())
	defer C.free(unsafe.Pointer(c))
	return C.GoString(c)
}
// GetPreviewFilename is a wrapper around gtk_file_chooser_get_preview_filename().