QMouseEvent

The QMouseEvent class contains parameters that describe a mouse event. More

Inheritance diagram of PySide2.QtGui.QMouseEvent

Synopsis

Functions

Detailed Description

Mouse events occur when a mouse button is pressed or released inside a widget, or when the mouse cursor is moved.

Mouse move events will occur only when a mouse button is pressed down, unless mouse tracking has been enabled with setMouseTracking() .

Qt automatically grabs the mouse when a mouse button is pressed inside a widget; the widget will continue to receive mouse events until the last mouse button is released.

A mouse event contains a special accept flag that indicates whether the receiver wants the event. You should call ignore() if the mouse event is not handled by your widget. A mouse event is propagated up the parent widget chain until a widget accepts it with accept() , or an event filter consumes it.

Note

If a mouse event is propagated to a widget for which WA_NoMousePropagation has been set, that mouse event will not be propagated further up the parent widget chain.

The state of the keyboard modifier keys can be found by calling the modifiers() function, inherited from QInputEvent .

The functions pos() , x() , and y() give the cursor position relative to the widget that receives the mouse event. If you move the widget as a result of the mouse event, use the global position returned by globalPos() to avoid a shaking motion.

The setEnabled() function can be used to enable or disable mouse and keyboard events for a widget.

Reimplement the QWidget event handlers, mousePressEvent() , mouseReleaseEvent() , mouseDoubleClickEvent() , and mouseMoveEvent() to receive mouse events in your own widgets.

See also

setMouseTracking() grabMouse() pos()

class QMouseEvent(type, localPos, button, buttons, modifiers)

QMouseEvent(type, localPos, screenPos, button, buttons, modifiers)

QMouseEvent(type, localPos, windowPos, screenPos, button, buttons, modifiers)

QMouseEvent(type, localPos, windowPos, screenPos, button, buttons, modifiers, source)

param type

Type

param localPos

QPointF

param screenPos

QPointF

param source

MouseEventSource

param modifiers

KeyboardModifiers

param windowPos

QPointF

param buttons

MouseButtons

param button

MouseButton

Constructs a mouse event object.

The type parameter must be one of MouseButtonPress , MouseButtonRelease , MouseButtonDblClick , or MouseMove .

The localPos is the mouse cursor’s position relative to the receiving widget or item. The window position is set to the same value as localPos . The button that caused the event is given as a value from the MouseButton enum. If the event type is MouseMove , the appropriate button for this event is NoButton . The mouse and keyboard states at the time of the event are specified by buttons and modifiers .

The screenPos() is initialized to pos() , which may not be appropriate. Use the other constructor to specify the global position explicitly.

Constructs a mouse event object.

The type parameter must be MouseButtonPress , MouseButtonRelease , MouseButtonDblClick , or MouseMove .

The localPos is the mouse cursor’s position relative to the receiving widget or item. The cursor’s position in screen coordinates is specified by screenPos . The window position is set to the same value as localPos . The button that caused the event is given as a value from the MouseButton enum. If the event type is MouseMove , the appropriate button for this event is NoButton . buttons is the state of all buttons at the time of the event, modifiers the state of all keyboard modifiers.

Constructs a mouse event object.

The type parameter must be MouseButtonPress , MouseButtonRelease , MouseButtonDblClick , or MouseMove .

The points localPos , windowPos and screenPos specify the mouse cursor’s position relative to the receiving widget or item, window, and screen, respectively.

The button that caused the event is given as a value from the MouseButton enum. If the event type is MouseMove , the appropriate button for this event is NoButton . buttons is the state of all buttons at the time of the event, modifiers the state of all keyboard modifiers.

Constructs a mouse event object.

The type parameter must be MouseButtonPress , MouseButtonRelease , MouseButtonDblClick , or MouseMove .

The points localPos , windowPos and screenPos specify the mouse cursor’s position relative to the receiving widget or item, window, and screen, respectively.

The button that caused the event is given as a value from the MouseButton enum. If the event type is MouseMove , the appropriate button for this event is NoButton . buttons is the state of all buttons at the time of the event, modifiers is the state of all keyboard modifiers.

The source of the event is specified by source .

PySide2.QtGui.QMouseEvent.l
PySide2.QtGui.QMouseEvent.w
PySide2.QtGui.QMouseEvent.s
PySide2.QtGui.QMouseEvent.caps
PySide2.QtGui.QMouseEvent.velocity
PySide2.QtGui.QMouseEvent.button()
Return type

MouseButton

Returns the button that caused the event.

Note that the returned value is always NoButton for mouse move events.

See also

buttons() MouseButton

PySide2.QtGui.QMouseEvent.buttons()
Return type

MouseButtons

Returns the button state when the event was generated. The button state is a combination of LeftButton , RightButton , MidButton using the OR operator. For mouse move events, this is all buttons that are pressed down. For mouse press and double click events this includes the button that caused the event. For mouse release events this excludes the button that caused the event.

See also

button() MouseButton

PySide2.QtGui.QMouseEvent.flags()
Return type

MouseEventFlags

Returns the mouse event flags.

The mouse event flags provide additional information about a mouse event.

See also

MouseEventFlag flags()

PySide2.QtGui.QMouseEvent.globalPos()
Return type

QPoint

Returns the global position of the mouse cursor at the time of the event . This is important on asynchronous window systems like X11. Whenever you move your widgets around in response to mouse events, may differ a lot from the current pointer position pos() , and from mapToGlobal ( pos() ).

See also

globalX() globalY()

PySide2.QtGui.QMouseEvent.globalX()
Return type

int

Returns the global x position of the mouse cursor at the time of the event.

See also

globalY() globalPos()

PySide2.QtGui.QMouseEvent.globalY()
Return type

int

Returns the global y position of the mouse cursor at the time of the event.

See also

globalX() globalPos()

PySide2.QtGui.QMouseEvent.localPos()
Return type

QPointF

Returns the position of the mouse cursor as a QPointF , relative to the widget or item that received the event.

If you move the widget as a result of the mouse event, use the screen position returned by screenPos() to avoid a shaking motion.

See also

x() y() windowPos() screenPos()

PySide2.QtGui.QMouseEvent.pos()
Return type

QPoint

Returns the position of the mouse cursor, relative to the widget that received the event.

If you move the widget as a result of the mouse event, use the global position returned by globalPos() to avoid a shaking motion.

See also

x() y() globalPos()

PySide2.QtGui.QMouseEvent.screenPos()
Return type

QPointF

Returns the position of the mouse cursor as a QPointF , relative to the screen that received the event.

See also

x() y() pos() localPos() windowPos()

PySide2.QtGui.QMouseEvent.setLocalPos(localPosition)
Parameters

localPositionQPointF

See also

localPos()

PySide2.QtGui.QMouseEvent.source()
Return type

MouseEventSource

Returns information about the mouse event source.

The mouse event source can be used to distinguish between genuine and artificial mouse events. The latter are events that are synthesized from touch events by the operating system or Qt itself.

Note

Many platforms provide no such information. On such platforms MouseEventNotSynthesized is returned always.

See also

MouseEventSource source()

PySide2.QtGui.QMouseEvent.windowPos()
Return type

QPointF

Returns the position of the mouse cursor as a QPointF , relative to the window that received the event.

If you move the widget as a result of the mouse event, use the global position returned by globalPos() to avoid a shaking motion.

See also

x() y() pos() localPos() screenPos()

PySide2.QtGui.QMouseEvent.x()
Return type

int

Returns the x position of the mouse cursor, relative to the widget that received the event.

See also

y() pos()

PySide2.QtGui.QMouseEvent.y()
Return type

int

Returns the y position of the mouse cursor, relative to the widget that received the event.

See also

x() pos()