Not able to see pushButton->setIcon(style.standardIcon(QStyle::SP_MessageBo xC ritical)

Hi,
I am using Qt4.8.6 on windows7, I am trying to set QStyle::SP_MessageBoxCritical Icon to the QPushButton as below

Code:

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QPushButton* criticalButt = new QPushButton(this);
criticalButt->setIcon(style.standardIcon(QStyle::SP_MessageBoxCritical));

---

But I am not able to see any icon, but if I do

Code:

---

criticalButt->setIcon(style.standardIcon(QStyle::QStyle::SP_ArrowBack));

---

I am able to see the arrow back button.

Please let me know any one face this issue.

If I follow http://www.qtcentre.org/threads/3739...f-a-MessageBox
Its working fine.

isn't it possible to use criticalButt->setIcon(style.standardIcon(QStyle::SP_MessageBoxC ritical)) directley.


Thanks in advance :-)