Style Sheet Syntax background

[Tondog]

I solved the problem:

QString styleSheet = "QWidget#MyOwnClass {background-color:rgb(%1, %2, %3)}";

QString styleSheet = "QWidget#MyOwnClass {background-color:rgb(%1, %2, %3)}";

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Now it works.
But I don't now why the other syntax don't work.

Thanks for your efforts