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