QMouseEvent ¶

概要 ¶

详细描述 ¶

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.

注意

If a mouse event is propagated to a widget 其中 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 .

函数 pos() , x() ，和 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.

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

重实现 QWidget 事件处理程序， mousePressEvent() , mouseReleaseEvent() , mouseDoubleClickEvent() ，和 mouseMoveEvent() to receive mouse events in your own widgets.

另请参阅

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.

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

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 。 button that caused the event is given as a value from the MouseButton 枚举。若事件 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 .

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.

type 参数必须是 MouseButtonPress , MouseButtonRelease , MouseButtonDblClick ，或 MouseMove .

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 。 button that caused the event is given as a value from the MouseButton 枚举。若事件 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.

type 参数必须是 MouseButtonPress , MouseButtonRelease , MouseButtonDblClick ，或 MouseMove .

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

button that caused the event is given as a value from the MouseButton 枚举。若事件 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.

type 参数必须是 MouseButtonPress , MouseButtonRelease , MouseButtonDblClick ，或 MouseMove .

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

button that caused the event is given as a value from the MouseButton 枚举。若事件 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 ( ) ¶

返回类型

MouseButton

返回导致事件的按钮。

注意：返回值始终是 NoButton 对于鼠标移动事件而言。

另请参阅

buttons() MouseButton

PySide2.QtGui.QMouseEvent. buttons ( ) ¶

返回类型

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.

另请参阅

button() MouseButton

PySide2.QtGui.QMouseEvent. flags ( ) ¶

返回类型

MouseEventFlags

返回鼠标事件标志。

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

另请参阅

MouseEventFlag flags()

PySide2.QtGui.QMouseEvent. globalPos ( ) ¶

返回类型

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() ).

另请参阅

globalX() globalY()

PySide2.QtGui.QMouseEvent. globalX ( ) ¶

返回类型

int

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

另请参阅

globalY() globalPos()

PySide2.QtGui.QMouseEvent. globalY ( ) ¶

返回类型

int

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

另请参阅

globalX() globalPos()

PySide2.QtGui.QMouseEvent. localPos ( ) ¶

返回类型

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.

另请参阅

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

PySide2.QtGui.QMouseEvent. pos ( ) ¶

返回类型

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.

另请参阅

x() y() globalPos()

PySide2.QtGui.QMouseEvent. screenPos ( ) ¶

返回类型

QPointF

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

另请参阅

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

PySide2.QtGui.QMouseEvent. setLocalPos ( localPosition ) ¶

参数

localPosition – QPointF

另请参阅

localPos()

PySide2.QtGui.QMouseEvent. source ( ) ¶

返回类型

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.

注意

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

另请参阅

MouseEventSource source()

PySide2.QtGui.QMouseEvent. windowPos ( ) ¶

返回类型

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.

另请参阅

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

PySide2.QtGui.QMouseEvent. x ( ) ¶

返回类型

int

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

另请参阅

y() pos()

PySide2.QtGui.QMouseEvent. y ( ) ¶

返回类型

int

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

另请参阅

x() pos()