QProgressDialog Cannot show its contents

Lohia

!http://tieba.baidu.com/photo/p?kw=qt&flux=1&tid=2493730139&pic_id=d31b0ef41bd5ad6e0b05ae1280cb39dbb7fd3c4e&pn=1&see_lz=1(123)!

Following code can perform progressbar in other functions but not this
@QProgressDialog *progressDlg = new QProgressDialog;
progressDlg->setWindowModality(Qt::WindowModal);
progressDlg->setModal(true);
progressDlg->show();
progressDlg->setWindowTitle("Loading...");
progressDlg->setRange(1, n);

for(int i = 1; i <= n; ++i)
{
Taxi t;
char fileName[256];
sprintf(fileName, "%s%d%s", fileDir, i, ".txt");
progressDlg->setValue(i);
progressDlg->setLabelText(fileName);
t.readData(fileName);

if(t.getId() != -1)
m_vTaxi.push_back(t);
}@

Lohia

!http://tieba.baidu.com/photo/p?kw=qt&flux=1&tid=2493730139&pic_id=d31b0ef41bd5ad6e0b05ae1280cb39dbb7fd3c4e&pn=1&see_lz=1#!/pid0e681330e924b89942a1b3c06f061d950b7bf67e/pn1(sd)!

SGaist

Hi and welcome to devnet,

Since your modifying QProgressDialog modality, I guess that the call to setValue doesn't call processEvents(), you'll have to do it in your loop.

Hope it helps

Lohia

[quote author="SGaist" date="1375091635"]Hi and welcome to devnet,

Since your modifying QProgressDialog modality, I guess that the call to setValue doesn't call processEvents(), you'll have to do it in your loop.

Hope it helps[/quote]
Thanks a lot ! It really helps!

SGaist

You're welcome !

If this solves your problem, you can update the thread's title to solved so other forum users may know that a solution has been found :)