Can i set a widget (like a button, for example) hidden in Qt Designer?

subj
And if yes, how is it done?

no, you can't.

not exactly, you can add dynamic properties in the Qt Designer: in the Property Editor there is a big green "plus" button, using it you can add different properties,
BUT it is work for Qt 4.5.x, and you can't preview a result of setting these properties.

Quote:

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Originally Posted by spirit

not exactly, you can add dynamic properties in the Qt Designer: in the Property Editor there is a big green "plus" button, using it you can add different properties

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I've tried that, but when I was to add a Boolean "visible" it complains that that key already exists. (Although it is not in the list.)

weird, looks like a bug.

Quote:

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Originally Posted by YaK

subj
And if yes, how is it done?

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Not in designer as far as I know.

But you can simply call yourWidget->hide() in the code using the form.