qpropertyanimation

问题 Here's the deal: I'm trying to make button A "blink" when button B is pushed, and the blinking should then stop when the user pushes button A. Furthermore, button A should then go back to its former state. After long reading through the documentation and other questions at SO, I have now following piece of code: Python 2.7 class Widget(QWidget): def __init__(self): super(Widget, self).__init__() self.resize(300,200) layout = QVBoxLayout(self) self.button_stop = QPushButton("Stop") layout

问题 Here's the deal: I'm trying to make button A "blink" when button B is pushed, and the blinking should then stop when the user pushes button A. Furthermore, button A should then go back to its former state. After long reading through the documentation and other questions at SO, I have now following piece of code: Python 2.7 class Widget(QWidget): def __init__(self): super(Widget, self).__init__() self.resize(300,200) layout = QVBoxLayout(self) self.button_stop = QPushButton("Stop") layout

来源： https://stackoverflow.com/questions/57828052/qpropertyanimation-not-working-with-window-opacity

问题 I have a small animation showing/hiding a frame when the mouse hovers the parent widget (in the code snippet below "MyWidget"). The animation simply changing the maximumWidth property of the frame so the frame becomes visible as some "slide-in effect". (The frame itself is place in a grid layout.) My Question is how to start the animation delayed? Example: Start 500ms after the mouse leaveEvent, so the slide-out effect is delayed and did not start immediately. void MyWidget::enterEvent(

问题 I want to animate Color of QBrush . For more details see code below That's my .h file class Cell : public QObject, public QGraphicsRectItem { Q_OBJECT Q_PROPERTY(QBrush brush READ brush WRITE set_Brush) public: QBrush _brush() const; void set_Brush(const QBrush&); Cell(QGraphicsItem *parent = 0); //конструктор } That's my .cpp file Cell::Cell(QGraphicsItem *parent) : QObject(), QGraphicsRectItem(parent) { this->setRect(0, 0, Scale, Scale); } QBrush Cell::_brush() const { return this->brush();