[Qt-interest] QMessageBox - prototype doubt and also specify default button

[Malyushytsky, Alex]

>> In the 4th last line from the bottom, its used QMessageBox::Yes | QMessageBox::No.. What does that mean?

This means you will have 2 buttons in the message box: Yes and No

>> ALso, how do i specify the default buton..

You already answered your own question:

>> Ok,StandardButton defaultButton = NoButton )

For example pass QMessageBox::Yes as a fifth parameter

If you don't understand  '|' operator I highly recommend reading  C/C++ book before going any further.
Also such kind of question better not to ask. Don't afraid to run tests when learning.
If you answer them yourself you will remember answers for life.

Regards,
   Alex





From: qt-interest-bounces at trolltech.com [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Abhijeet Rastogi
Sent: Friday, September 11, 2009 1:29 PM
To: qt-interest at trolltech.com
Subject: [Qt-interest] QMessageBox - prototype doubt and also specify default button

#include<QtGui>
int main (int argc, char* argv[])
{
QApplication app(argc, argv);
QTextStream cout(stdout, QIODevice::WriteOnly);
// Declarations of variables
int answer = 0;
do {
// local variables to the loop:
int factArg = 0;
int fact(1);
factArg = QInputDialog::getInteger(0, "Factorial Calculator",
"Factorial of:", 1);
cout << "User entered: " << factArg << endl;
int i=2;
while (i <= factArg) {
fact = fact * i;
++i;
}
QString response = QString("The factorial of %1 is %2.\n%3")
.arg(factArg).arg(fact)
.arg("Do you want to compute another factorial?");
answer = QMessageBox::question(0, "Play again?", response,
QMessageBox::Yes | QMessageBox::No);
} while (answer == QMessageBox::Yes);
return EXIT_SUCCESS;
}


In the 4th last line from the bottom, its used QMessageBox::Yes | QMessageBox::No.. What does that mean?
Its prototype is:

StandardButton QMessageBox::question ( QWidget * parent, const QString & title, const QString & text, StandardButtons buttons = Ok,StandardButton defaultButton = NoButton )   [static]

ALso, how do i specify the default buton.. Pls make me understand.. I know its very basic funtion but pls do help.


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