| Value | Meaning |
|---|---|
| Modal1 | Make the constructed dialog modal, see gtk.window.Window.setModal |
| DestroyWithParent2 | Destroy the dialog when its parent is destroyed, see gtk.window.Window.setDestroyWithParent |
| UseHeaderBar4 | Create dialog with actions in header bar instead of action area. Since 3.12. |
Flags used to influence dialog construction.