gtk/app_chooser.go
func AppChooserWidgetNew(content_type string) (*AppChooserWidget, error) {
	cstr := C.CString(content_type)
	defer C.free(unsafe.Pointer(cstr))
	c := C.gtk_app_chooser_widget_new((*C.gchar)(cstr))
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapAppChooserWidget(glib.Take(unsafe.Pointer(c))), nil
}
func AppChooserWidgetNew(content_type string) (*AppChooserWidget, error) {
	cstr := C.CString(content_type)
	defer C.free(unsafe.Pointer(cstr))
	c := C.gtk_app_chooser_widget_new((*C.gchar)(cstr))
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapAppChooserWidget(glib.Take(unsafe.Pointer(c))), nil
}
// AppChooserWidgetNew() is a wrapper around gtk_app_chooser_widget_new().