<p>I am using Qt Dialogs in one of my application.
I need to hide/delete the help button. But i am not able to locate where exactly I get the handle to his help button. Not sure if its a particular flag on the Qt window.</p>

By default the
Qt::WindowContextHelpButtonHint
flag is added to dialogs.
You can control this with the
WindowFlags
parameter to the dialog constructor.
For instance you can specify only the
TitleHint
and
SystemMenu
flags by doing:
```
```
QDialog *d = new QDialog(0, Qt::WindowSystemMenuHint | Qt::WindowTitleHint);
d->exec();
```
```
If you add the
Qt::WindowContextHelpButtonHint
flag you will get the help button back.
In PyQt you can do:
```
```
from PyQt4 import QtGui, QtCore
app = QtGui.QApplication([])
d = QtGui.QDialog(None, QtCore.Qt.WindowSystemMenuHint | QtCore.Qt.WindowTitleHint)
d.exec_()
```
```
More details on window flags can be found on the
WindowType enum
in the Qt documentation.