How can I avoid a QDialog close?

Hi!

If I have QMainWindow I can rewrite
void CEditor::closeEvent(QCloseEvent *event) {
and return event->ignore(); to avoid closing.

How can I do something similar if I have a QDialog? (user press X button or hit ESC)

Thanks.

closeEvent() is for all widgets, not just main window..so it should work with dialog too..if it doesnt, try setting window modality for dialog to true..that way it will become a TLW(top level widget), and closeEvent() would most certainly come to dialog

It seems if I rewrite
void CSequencesDialog::closeEvent(QCloseEvent *event) {
works, but if I try to write
event->accept();
Or
event->ignore();

[/code]
1>.\CSequencesDialog.cpp(475) : error C2027: use of undefined type 'QCloseEvent'
1> c:\qt\2009.01\qt\include\qtgui\../../src/gui/kernel/qwidget.h(83) : see declaration of 'QCloseEvent'
1>.\CSequencesDialog.cpp(475) : error C2227: left of '->accept' must point to class/struct/union/generic type
1>.\CSequencesDialog.cpp(477) : error C2027: use of undefined type 'QCloseEvent'
1> c:\qt\2009.01\qt\include\qtgui\../../src/gui/kernel/qwidget.h(83) : see declaration of 'QCloseEvent'
1>.\CSequencesDialog.cpp(477) : error C2227: left of '->ignore' must point to class/struct/union/generic type
1>Build log was saved at "file://c:\Documents and Settings\Ricardo\Escritorio\iPhone\Kokochiko\Edito r\Editor\Debug\BuildLog.htm"
1>Editor - 4 error(s), 0 warning(s)
[code]

Any idea?

Bad news. I read this on Qt docs:

"If the user presses the Esc key in a dialog, QDialog::reject() will be called. This will cause the window to close: The close event cannot be ignored."

So, is that impossible?

Thanks.

May be you can try overriding QWidget::keyPressEvent or QWidget::keyReleaseEventand compare something like -

Code:

---

if(event->key() == Qy::Key_Esc)
    event->ignore();  // or do nothing, dont call base call function for this case

---

I have a similar problem if I use keyPressEvent. It seems parameter is not recognized.

Code:

---

>CSequencesDialog.cpp
1>.\CSequencesDialog.cpp(486) : error C2027: use of undefined type 'QKeyEvent'
1>        c:\qt\2009.01\qt\include\qtgui\../../src/gui/kernel/qwidget.h(78) : see declaration of 'QKeyEvent'
1>.\CSequencesDialog.cpp(486) : error C2227: left of '->key' must point to class/struct/union/generic type
1>.\CSequencesDialog.cpp(486) : error C2653: 'Qy' : is not a class or namespace name
1>.\CSequencesDialog.cpp(486) : error C2065: 'Key_Esc' : undeclared identifier
1>.\CSequencesDialog.cpp(486) : error C2027: use of undefined type 'QKeyEvent'
1>        c:\qt\2009.01\qt\include\qtgui\../../src/gui/kernel/qwidget.h(78) : see declaration of 'QKeyEvent'
1>.\CSequencesDialog.cpp(486) : error C2227: left of '->ignore' must point to class/struct/union/generic type
1>CEditor.cpp
1>Generating Code...

---

you forgot to include

Code:

---

#include <QKeyEvent>

---

Thanks a lot, it worked.