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The platform presents an intensive collection of slot video games, each with its unique storyline, aesthetics, and gameplay mechanics. On Windows, if you're calling this when the applying just isn't at the moment the active one then it will not make it the lively window. If neither of those is ready, then the title is an empty string. If minimumSize() is set, the minimum measurement trace might be ignored. If no icon has been set, windowIcon() returns the application icon (QApplication::windowIcon()). EnabledTo(0) returns false if this widget or any if its ancestors was explicitly disabled. Returns the font metrics for the widget's present font. See additionally font(), fontMetrics(), and setFont(). See also isWindow(), windowModality, and QDialog. The default implementation ignores the context occasion. This occasion handler, for occasion event, could be reimplemented in a subclass to obtain Input Methodology composition occasions. This event handler, for event event, will be reimplemented in a subclass to receive mouse move events for the widget. If you happen to assign a brush or shade to a specific role on a palette and assign that palette to a widget, that role will propagate to all of the widget's children, overriding any system defaults for that role. When update() is named a number of instances or the window system sends a number of paint occasions, Qt merges these events into one occasion with a larger area (see QRegion::united()). Calling setVisible(true) or show() units the widget to visible standing if all its mother or father widgets as much as the window are visible. Be aware: This operate calls setParent() when changing the flags for a window, causing the widget to be hidden.

Hides the widget. This perform is equal to setVisible(false). Warning: In case you call repaint() in a function which may itself be called from paintEvent(), you could get infinite recursion. In your reimplementation of this perform, if you wish to stop the event being handled by Qt, return true and set consequence. The operate is called by Qt internally, and the default implementation may not always return a sound pointer. This function does not trigger a right away repaint; as an alternative it schedules a paint event for processing when Qt returns to the primary occasion loop. Warning: Changing this property from opaque to clear would possibly subject a paint event that needs to be processed before the window is displayed accurately. This occasion handler is called if a drag is in progress, and when any of the next situations occur: the cursor enters this widget, the cursor moves within this widget, or a modifier key is pressed on the keyboard whereas this widget has the focus. Grabs the mouse input and adjustments the cursor shape. It is nearly by no means necessary to grab the mouse when utilizing Qt, as Qt grabs and releases it sensibly. In particular, Qt grabs the mouse when a mouse button is pressed and retains it until the last button is released. For example, a web browser would possibly reimplement it to move its "present active link" ahead or backward, and call focusNextPrevChild() solely when it reaches the last or first hyperlink on the "page". I did a bit more refinement on the Lua bowling instance from last time. In case you create new widgets in the mousePressEvent() the mouseReleaseEvent() might not end up the place you anticipate, depending on the underlying window system (or X11 window supervisor), the widgets' location and perhaps more. This permits Qt to optimize for more pace and less flicker than a call to repaint() does. This pace optimization doesn't change the end result, as painting is clipped to that area throughout occasion processing. In virtually all circumstances update() is better, because it permits Qt to optimize for speed and decrease flicker. See also occasion(), repaint(), update(), QPainter, QPixmap, QPaintEvent, and Analog Clock Example. See additionally repaint(), paintEvent(), setUpdatesEnabled(), and Analog Clock Example. Since Qt 4.0, QWidget robotically double-buffers its painting, so there isn't a want to jot down double-buffering code in paintEvent() to avoid flicker. See additionally closeEvent(), focusInEvent(), focusOutEvent(), enterEvent(), keyPressEvent(), keyReleaseEvent(), leaveEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), moveEvent(), paintEvent(), resizeEvent(), QObject::event(), and QObject::timerEvent(). When altering the position, the widget, if visible, receives a transfer event (moveEvent()) instantly.

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