Version: 3.1.1

#include <wx/event.h>

+ Inheritance diagram for wxThreadEvent:

Detailed Description

This class adds some simple functionality to wxEvent to facilitate inter-thread communication.

This event is not natively emitted by any control/class: it is just a helper class for the user. Its most important feature is the GetEventCategory() implementation which allows thread events NOT to be processed by wxEventLoopBase::YieldFor calls (unless the wxEVT_CATEGORY_THREAD is specified - which is never in wx code).

Library:  wxCore
Category:  Events, Threading
See also
Multithreading Overview, wxEventLoopBase::YieldFor
Since
2.9.0

Public Member Functions

 wxThreadEvent (wxEventType eventType=wxEVT_THREAD, int id=wxID_ANY)
 Constructor. More...
 
virtual wxEventClone () const
 Clones this event making sure that all internal members which use COW (only m_commandString for now; see Reference Counting) are unshared (see wxObject::UnShare). More...
 
virtual wxEventCategory GetEventCategory () const
 Returns wxEVT_CATEGORY_THREAD. More...
 
template<typename T >
void SetPayload (const T &payload)
 Sets custom data payload. More...
 
template<typename T >
GetPayload () const
 Get custom data payload. More...
 
long GetExtraLong () const
 Returns extra information integer value. More...
 
int GetInt () const
 Returns stored integer value. More...
 
wxString GetString () const
 Returns stored string value. More...
 
void SetExtraLong (long extraLong)
 Sets the extra information value. More...
 
void SetInt (int intCommand)
 Sets the integer value. More...
 
void SetString (const wxString &string)
 Sets the string value. More...
 
- Public Member Functions inherited from wxEvent
 wxEvent (int id=0, wxEventType eventType=wxEVT_NULL)
 Constructor. More...
 
wxObjectGetEventObject () const
 Returns the object (usually a window) associated with the event, if any. More...
 
wxEventType GetEventType () const
 Returns the identifier of the given event type, such as wxEVT_BUTTON. More...
 
int GetId () const
 Returns the identifier associated with this event, such as a button command id. More...
 
wxObjectGetEventUserData () const
 Return the user data associated with a dynamically connected event handler. More...
 
bool GetSkipped () const
 Returns true if the event handler should be skipped, false otherwise. More...
 
long GetTimestamp () const
 Gets the timestamp for the event. More...
 
bool IsCommandEvent () const
 Returns true if the event is or is derived from wxCommandEvent else it returns false. More...
 
void ResumePropagation (int propagationLevel)
 Sets the propagation level to the given value (for example returned from an earlier call to wxEvent::StopPropagation). More...
 
void SetEventObject (wxObject *object)
 Sets the originating object. More...
 
void SetEventType (wxEventType type)
 Sets the event type. More...
 
void SetId (int id)
 Sets the identifier associated with this event, such as a button command id. More...
 
void SetTimestamp (long timeStamp=0)
 Sets the timestamp for the event. More...
 
bool ShouldPropagate () const
 Test if this event should be propagated or not, i.e. if the propagation level is currently greater than 0. More...
 
void Skip (bool skip=true)
 This method can be used inside an event handler to control whether further event handlers bound to this event will be called after the current one returns. More...
 
int StopPropagation ()
 Stop the event from propagating to its parent window. More...
 
- Public Member Functions inherited from wxObject
 wxObject ()
 Default ctor; initializes to NULL the internal reference data. More...
 
 wxObject (const wxObject &other)
 Copy ctor. More...
 
virtual ~wxObject ()
 Destructor. More...
 
virtual wxClassInfoGetClassInfo () const
 This virtual function is redefined for every class that requires run-time type information, when using the wxDECLARE_CLASS macro (or similar). More...
 
wxObjectRefDataGetRefData () const
 Returns the wxObject::m_refData pointer, i.e. the data referenced by this object. More...
 
bool IsKindOf (const wxClassInfo *info) const
 Determines whether this class is a subclass of (or the same class as) the given class. More...
 
bool IsSameAs (const wxObject &obj) const
 Returns true if this object has the same data pointer as obj. More...
 
void Ref (const wxObject &clone)
 Makes this object refer to the data in clone. More...
 
void SetRefData (wxObjectRefData *data)
 Sets the wxObject::m_refData pointer. More...
 
void UnRef ()
 Decrements the reference count in the associated data, and if it is zero, deletes the data. More...
 
void UnShare ()
 This is the same of AllocExclusive() but this method is public. More...
 
void operator delete (void *buf)
 The delete operator is defined for debugging versions of the library only, when the identifier WXDEBUG is defined. More...
 
void * operator new (size_t size, const wxString &filename=NULL, int lineNum=0)
 The new operator is defined for debugging versions of the library only, when the identifier WXDEBUG is defined. More...
 

Additional Inherited Members

- Protected Member Functions inherited from wxObject
void AllocExclusive ()
 Ensure that this object's data is not shared with any other object. More...
 
virtual wxObjectRefDataCreateRefData () const
 Creates a new instance of the wxObjectRefData-derived class specific to this object and returns it. More...
 
virtual wxObjectRefDataCloneRefData (const wxObjectRefData *data) const
 Creates a new instance of the wxObjectRefData-derived class specific to this object and initializes it copying data. More...
 
- Protected Attributes inherited from wxEvent
int m_propagationLevel
 Indicates how many levels the event can propagate. More...
 
- Protected Attributes inherited from wxObject
wxObjectRefDatam_refData
 Pointer to an object which is the object's reference-counted data. More...
 

Constructor & Destructor Documentation

wxThreadEvent::wxThreadEvent ( wxEventType  eventType = wxEVT_THREAD,
int  id = wxID_ANY 
)

Constructor.

Member Function Documentation

virtual wxEvent* wxThreadEvent::Clone ( ) const
virtual

Clones this event making sure that all internal members which use COW (only m_commandString for now; see Reference Counting) are unshared (see wxObject::UnShare).

Implements wxEvent.

virtual wxEventCategory wxThreadEvent::GetEventCategory ( ) const
virtual

Returns wxEVT_CATEGORY_THREAD.

This is important to avoid unwanted processing of thread events when calling wxEventLoopBase::YieldFor().

Reimplemented from wxEvent.

long wxThreadEvent::GetExtraLong ( ) const

Returns extra information integer value.

int wxThreadEvent::GetInt ( ) const

Returns stored integer value.

template<typename T >
T wxThreadEvent::GetPayload ( ) const

Get custom data payload.

Correct type is checked in debug builds.

Note
This method is not available with Visual C++ 6.
Since
2.9.1
See also
SetPayload(), wxAny
wxString wxThreadEvent::GetString ( ) const

Returns stored string value.

void wxThreadEvent::SetExtraLong ( long  extraLong)

Sets the extra information value.

void wxThreadEvent::SetInt ( int  intCommand)

Sets the integer value.

template<typename T >
void wxThreadEvent::SetPayload ( const T &  payload)

Sets custom data payload.

The payload argument may be of any type that wxAny can handle (i.e. pretty much anything). Note that T's copy constructor must be thread-safe, i.e. create a copy that doesn't share anything with the original (see Clone()).

Note
This method is not available with Visual C++ 6.
Since
2.9.1
See also
GetPayload(), wxAny
void wxThreadEvent::SetString ( const wxString string)

Sets the string value.