processEvents() and GUI responsivity

[gianpatt]

Hi all,
first of all: my english is not good, so sorry for this....

I have a strange problem with al little test that I am writing following:

#include <QApplication>
#include <QProgressDialog>
int main(int argc, char* argv[])
{
	QApplication app(argc, argv);
 
	QProgressDialog dlg;
	dlg.setRange(0, 0);
	dlg.show();
 
        // I want to simulate a process that takes a long time
	for (int i = 0; i < 1000000; i++)
	{
		qDebug() << i;
 
                // Call process event to have a GUI responsivity
		QCoreApplication::processEvents();
	}
 
	dlg.hide();
	return app.exec();
}

#include <QApplication>
#include <QProgressDialog>
int main(int argc, char* argv[])
{
	QApplication app(argc, argv);

	QProgressDialog dlg;
	dlg.setRange(0, 0);
	dlg.show();

        // I want to simulate a process that takes a long time
	for (int i = 0; i < 1000000; i++)
	{
		qDebug() << i;

                // Call process event to have a GUI responsivity
		QCoreApplication::processEvents();
	}

	dlg.hide();
	return app.exec();
}

To copy to clipboard, switch view to plain text mode 

The program behaves as it should, but....if i click on ProgressDialog WindowBar (when lives close buttons :-) ) the loop counter freezes but the progress animation NOT! It 'a bit annoying.

I'm something wrong? I can do something to prevent this behavior?

I tried to intercept mouse events...
I tried this test on Mac.