Question

I tried this:

QPushButton* openHostsPushButton = new QPushButton("Open Hosts");
Button_SetElevationRequiredState(openHostsPushButton->winId(), true);
openHostsPushButton->setMaximumSize(aPushButtonMaxSize);
connect(openHostsPushButton, SIGNAL(clicked()),
        this, SLOT(openHostsClicked()));

However didn’t work.

Answer 1

I’m not sure if this will work, since Qt doesn’t actually use native controls but rather custom-draws everything. The only way that Windows will place that icon on a button is if you use a window with the class Button, something that you ask the window manager to create for you.

Also note that in order for this to work, you must have included a manifest with your application to link to version 6 of the common controls (Comctl32.dll)—but you should probably be doing that already if you’re supporting Windows Vista and 7.

But there’s an easier way to do it using Qt involving QStyle:

QIcon shieldIcon = QApplication::style()->standardIcon(QStyle::SP_VistaShield);
openHostsPushButton->setIcon(shieldIcon);

On systems that do not support UAC, the icon will not appear.