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Setting QObject properties
From 4.3 and above, any designable Q_PROPERTY can be set using the qproperty-<property name> syntax.
For example,
MyLabel { qproperty-pixmap: url(pixmap.png); }
MyGroupBox { qproperty-titleColor: rgb(100, 200, 100); }
QPushButton { qproperty-iconSize: 20px 20px; }
If the property references an enum declared with Q_ENUMS, you should reference its constants by name, i.e., not their numeric value.