 |
ezEngine Release 26.9
|
|
ezEngine Release 26.9
|
#include <Dialog.moc.h>
Public Member Functions | |
| ezQtDialog (QWidget *pParent) | |
| virtual int | exec () override |
Base class for the editor's modal dialogs, which does nothing except refuse to block when no user is present.
A QDialog::exec() runs a nested event loop and only returns once someone closes the window. In an unattended session (see ezQtUiServices::IsUnattended()) no one ever does, so the application hangs for good - it cannot even be asked to quit, because that request would be handled by the very event loop that is stuck. Deriving from this class turns that into a rejected dialog plus a log message.
Derive from it instead of QDialog for anything that is exec()ed. Dialogs that are only ever show()n don't block and don't need it, but there is no harm in deriving anyway, and doing so uniformly means nobody has to check which kind a dialog is when adding an exec() call later.
Note that this only unblocks the caller - it does not make the dialog's functionality available to an automated caller. Whatever the dialog would have configured has to be reachable some other way for that, e.g. through a dedicated function that takes the same settings as arguments.
|
overridevirtual |
Shows the dialog modally, unless no user is present, in which case it reports itself as suppressed (see ezQtUiServices::ReportSuppressedDialog()) and returns QDialog::Rejected without showing anything.
1.9.8