Change Stylesheet Using Dynamic Property

[stefanadelbert]

I'm trying to use a dynamic property to change a style for a QPushButton.

I have something like the following:

C++

// Create button with dynamic property
button = new QPushButton(this);
button->setObjectName(QString::fromUtf8("MyButton"));
button->setProperty("myProperty", "rank1");
// Button background should be red now
...
// Change the property
button->setProperty("myProperty", "rank2");
// The button's background colour should be blue now

// Create button with dynamic property
button = new QPushButton(this);
button->setObjectName(QString::fromUtf8("MyButton"));
button->setProperty("myProperty", "rank1");
// Button background should be red now
...
// Change the property
button->setProperty("myProperty", "rank2");
// The button's background colour should be blue now

To copy to clipboard, switch view to plain text mode 

QSS

QPushButton#MyButton[myProperty="rank1"] { background: red; }
QPushButton#MyButton[myProperty="rank2"] { background: blue; }

QPushButton#MyButton[myProperty="rank1"] { background: red; }
QPushButton#MyButton[myProperty="rank2"] { background: blue; }

To copy to clipboard, switch view to plain text mode 

This does work to a certain degree. If I call QApplication::setStyleSheet() after updating myProperty, the style does update correctly. But the style is not updating correctly when I change the property. Is it incorrect to expect the button's background colour to change dynamically when the "myProperty" dynamic property is changed?