QPropertyAnimation how to lock button slot to avoid reset of animation

[Jonny174]

QPushButton *btn = ....;
connect( btn, SIGNAL(clicked), this, SLOT(on_btn_slot()) );

QPushButton *btn = ....;
connect( btn, SIGNAL(clicked), this, SLOT(on_btn_slot()) );

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To disable use disconnect( btn, 0, 0, 0 ), and connect( btn, SIGNAL(clicked), this, SLOT(on_btn_slot()) ); to connect again. No?