- If the GInputBox has a parent and the parent is a GWindow, center the
input box window within the parent window. This looks quite nice.
- Stop processing events in a nested event loop immediately after it's
been asked to quit.
- Fix GWidget::parent_widget() behavior for non-widget parents.
This patch adds a simple GMessageBox that can run in a nested event loop.
Here's how you use it:
GMessageBox box("Message text here", "Message window title");
int result = box.exec();
The next step is to make the WindowServer respect the modality flag of
these windows and prevent interaction with other windows in the same
process until the modal window has been closed.
