Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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Public Types | Public Member Functions | Protected Attributes | List of all members
QPlatformSurfaceEvent Class Reference

The QPlatformSurfaceEvent class is used to notify about native platform surface events. \inmodule QtGui. More...

#include <qevent.h>

+ Inheritance diagram for QPlatformSurfaceEvent:
+ Collaboration diagram for QPlatformSurfaceEvent:

Public Types

enum  SurfaceEventType { SurfaceCreated , SurfaceAboutToBeDestroyed }
 This enum describes the type of platform surface event. More...
 
- Public Types inherited from QEvent
enum  Type {
  None = 0 , Timer = 1 , MouseButtonPress = 2 , MouseButtonRelease = 3 ,
  MouseButtonDblClick = 4 , MouseMove = 5 , KeyPress = 6 , KeyRelease = 7 ,
  FocusIn = 8 , FocusOut = 9 , FocusAboutToChange = 23 , Enter = 10 ,
  Leave = 11 , Paint = 12 , Move = 13 , Resize = 14 ,
  Create = 15 , Destroy = 16 , Show = 17 , Hide = 18 ,
  Close = 19 , Quit = 20 , ParentChange = 21 , ParentAboutToChange = 131 ,
  ThreadChange = 22 , WindowActivate = 24 , WindowDeactivate = 25 , ShowToParent = 26 ,
  HideToParent = 27 , Wheel = 31 , WindowTitleChange = 33 , WindowIconChange = 34 ,
  ApplicationWindowIconChange = 35 , ApplicationFontChange = 36 , ApplicationLayoutDirectionChange = 37 , ApplicationPaletteChange = 38 ,
  PaletteChange = 39 , Clipboard = 40 , Speech = 42 , MetaCall = 43 ,
  SockAct = 50 , WinEventAct = 132 , DeferredDelete = 52 , DragEnter = 60 ,
  DragMove = 61 , DragLeave = 62 , Drop = 63 , DragResponse = 64 ,
  ChildAdded = 68 , ChildPolished = 69 , ChildRemoved = 71 , ShowWindowRequest = 73 ,
  PolishRequest = 74 , Polish = 75 , LayoutRequest = 76 , UpdateRequest = 77 ,
  UpdateLater = 78 , EmbeddingControl = 79 , ActivateControl = 80 , DeactivateControl = 81 ,
  ContextMenu = 82 , InputMethod = 83 , TabletMove = 87 , LocaleChange = 88 ,
  LanguageChange = 89 , LayoutDirectionChange = 90 , Style = 91 , TabletPress = 92 ,
  TabletRelease = 93 , OkRequest = 94 , HelpRequest = 95 , IconDrag = 96 ,
  FontChange = 97 , EnabledChange = 98 , ActivationChange = 99 , StyleChange = 100 ,
  IconTextChange = 101 , ModifiedChange = 102 , MouseTrackingChange = 109 , WindowBlocked = 103 ,
  WindowUnblocked = 104 , WindowStateChange = 105 , ReadOnlyChange = 106 , ToolTip = 110 ,
  WhatsThis = 111 , StatusTip = 112 , ActionChanged = 113 , ActionAdded = 114 ,
  ActionRemoved = 115 , FileOpen = 116 , Shortcut = 117 , ShortcutOverride = 51 ,
  WhatsThisClicked = 118 , ToolBarChange = 120 , ApplicationActivate = 121 , ApplicationActivated = ApplicationActivate ,
  ApplicationDeactivate = 122 , ApplicationDeactivated = ApplicationDeactivate , QueryWhatsThis = 123 , EnterWhatsThisMode = 124 ,
  LeaveWhatsThisMode = 125 , ZOrderChange = 126 , HoverEnter = 127 , HoverLeave = 128 ,
  HoverMove = 129 , AcceptDropsChange = 152 , ZeroTimerEvent = 154 , GraphicsSceneMouseMove = 155 ,
  GraphicsSceneMousePress = 156 , GraphicsSceneMouseRelease = 157 , GraphicsSceneMouseDoubleClick = 158 , GraphicsSceneContextMenu = 159 ,
  GraphicsSceneHoverEnter = 160 , GraphicsSceneHoverMove = 161 , GraphicsSceneHoverLeave = 162 , GraphicsSceneHelp = 163 ,
  GraphicsSceneDragEnter = 164 , GraphicsSceneDragMove = 165 , GraphicsSceneDragLeave = 166 , GraphicsSceneDrop = 167 ,
  GraphicsSceneWheel = 168 , GraphicsSceneLeave = 220 , KeyboardLayoutChange = 169 , DynamicPropertyChange = 170 ,
  TabletEnterProximity = 171 , TabletLeaveProximity = 172 , NonClientAreaMouseMove = 173 , NonClientAreaMouseButtonPress = 174 ,
  NonClientAreaMouseButtonRelease = 175 , NonClientAreaMouseButtonDblClick = 176 , MacSizeChange = 177 , ContentsRectChange = 178 ,
  MacGLWindowChange = 179 , FutureCallOut = 180 , GraphicsSceneResize = 181 , GraphicsSceneMove = 182 ,
  CursorChange = 183 , ToolTipChange = 184 , NetworkReplyUpdated = 185 , GrabMouse = 186 ,
  UngrabMouse = 187 , GrabKeyboard = 188 , UngrabKeyboard = 189 , StateMachineSignal = 192 ,
  StateMachineWrapped = 193 , TouchBegin = 194 , TouchUpdate = 195 , TouchEnd = 196 ,
  NativeGesture = 197 , RequestSoftwareInputPanel = 199 , CloseSoftwareInputPanel = 200 , WinIdChange = 203 ,
  Gesture = 198 , GestureOverride = 202 , ScrollPrepare = 204 , Scroll = 205 ,
  Expose = 206 , InputMethodQuery = 207 , OrientationChange = 208 , TouchCancel = 209 ,
  ThemeChange = 210 , SockClose = 211 , PlatformPanel = 212 , StyleAnimationUpdate = 213 ,
  ApplicationStateChange = 214 , WindowChangeInternal = 215 , ScreenChangeInternal = 216 , PlatformSurface = 217 ,
  Pointer = 218 , TabletTrackingChange = 219 , WindowAboutToChangeInternal = 221 , DevicePixelRatioChange = 222 ,
  ChildWindowAdded = 223 , ChildWindowRemoved = 224 , ParentWindowAboutToChange = 225 , ParentWindowChange = 226 ,
  User = 1000 , MaxUser = 65535
}
 This enum type defines the valid event types in Qt. More...
 

Public Member Functions

 QPlatformSurfaceEvent (SurfaceEventType surfaceEventType)
 Constructs a platform surface event for the given surfaceEventType.
 
SurfaceEventType surfaceEventType () const
 Returns the specific type of platform surface event.
 
- Public Member Functions inherited from QEvent
 QEvent (Type type)
 Constructs an event object of type type.
 
virtual ~QEvent ()
 Destroys the event.
 
Type type () const
 Returns the event type.
 
bool spontaneous () const
 Returns true if the event originated outside the application (a system event); otherwise returns false.
 
virtual void setAccepted (bool accepted)
 
bool isAccepted () const
 
void accept ()
 Sets the accept flag of the event object, the equivalent of calling setAccepted(true).
 
void ignore ()
 Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false).
 
bool isInputEvent () const noexcept
 
bool isPointerEvent () const noexcept
 
bool isSinglePointEvent () const noexcept
 
virtual QEvent * clone () const
 Creates and returns an identical copy of this event.
 

Protected Attributes

SurfaceEventType m_surfaceEventType
 
- Protected Attributes inherited from QEvent
quint16 t
 

Additional Inherited Members

- Static Public Member Functions inherited from QEvent
static int registerEventType (int hint=-1) noexcept
 
- Protected Member Functions inherited from QEvent
 QEvent (Type type, InputEventTag)
 
 QEvent (Type type, PointerEventTag)
 
 QEvent (Type type, SinglePointEventTag)
 

Detailed Description

The QPlatformSurfaceEvent class is used to notify about native platform surface events. \inmodule QtGui.

Since
5.5

Platform window events are synchronously sent to windows and offscreen surfaces when their underlying native surfaces are created or are about to be destroyed.

Applications can respond to these events to know when the underlying platform surface exists.

Definition at line 530 of file qevent.h.

Member Enumeration Documentation

◆ SurfaceEventType

enum QPlatformSurfaceEvent::SurfaceEventType

This enum describes the type of platform surface event.

The possible types are:

\value SurfaceCreated The underlying native surface has been created \value SurfaceAboutToBeDestroyed The underlying native surface will be destroyed immediately after this event

The SurfaceAboutToBeDestroyed event type is useful as a means of stopping rendering to a platform window before it is destroyed.

Enumerator
SurfaceCreated 
SurfaceAboutToBeDestroyed 

Definition at line 534 of file qevent.h.

Constructor & Destructor Documentation

◆ QPlatformSurfaceEvent()

QPlatformSurfaceEvent::QPlatformSurfaceEvent ( SurfaceEventType surfaceEventType)
explicit

Constructs a platform surface event for the given surfaceEventType.

Definition at line 1764 of file qevent.cpp.

Member Function Documentation

◆ surfaceEventType()

QPlatformSurfaceEvent::SurfaceEventType QPlatformSurfaceEvent::surfaceEventType ( ) const
inline

Returns the specific type of platform surface event.

Definition at line 541 of file qevent.h.

Referenced by QBackingStoreRhiSupportWindowWatcher::eventFilter(), and operator<<().

+ Here is the caller graph for this function:

Member Data Documentation

◆ m_surfaceEventType

SurfaceEventType QPlatformSurfaceEvent::m_surfaceEventType
protected

Definition at line 544 of file qevent.h.

The documentation for this class was generated from the following files: