+#include "wx/defs.h"
+
+#if wxUSE_GUI && wxUSE_TIMER
+
+#include "wx/object.h"
+#include "wx/longlong.h"
+#include "wx/event.h"
+#include "wx/stopwatch.h" // for backwards compatibility
+#include "wx/window.h" // only for NewControlId()
+
+
+// more readable flags for Start():
+
+// generate notifications periodically until the timer is stopped (default)
+#define wxTIMER_CONTINUOUS false
+
+// only send the notification once and then stop the timer
+#define wxTIMER_ONE_SHOT true
+
+// the interface of wxTimer class
+class WXDLLEXPORT wxTimerBase : public wxEvtHandler
+{
+public:
+ // ctors and initializers
+ // ----------------------
+
+ // default: if you don't call SetOwner(), your only chance to get timer
+ // notifications is to override Notify() in the derived class
+ wxTimerBase()
+ { Init(); SetOwner(this); }
+
+ // ctor which allows to avoid having to override Notify() in the derived
+ // class: the owner will get timer notifications which can be handled with
+ // EVT_TIMER
+ wxTimerBase(wxEvtHandler *owner, int timerid = wxID_ANY)
+ { Init(); SetOwner(owner, timerid); }
+
+ // same as ctor above
+ void SetOwner(wxEvtHandler *owner, int timerid = wxID_ANY)
+ {
+ m_owner = owner;
+ m_idTimer = timerid == wxID_ANY ? wxWindow::NewControlId() : timerid;
+ }
+
+ wxEvtHandler *GetOwner() const { return m_owner; }
+
+ virtual ~wxTimerBase();
+
+ // working with the timer
+ // ----------------------
+
+ // start the timer: if milliseconds == -1, use the same value as for the
+ // last Start()
+ //
+ // it is now valid to call Start() multiple times: this just restarts the
+ // timer if it is already running
+ virtual bool Start(int milliseconds = -1, bool oneShot = false);
+
+ // stop the timer
+ virtual void Stop() = 0;
+
+ // override this in your wxTimer-derived class if you want to process timer
+ // messages in it, use non default ctor or SetOwner() otherwise
+ virtual void Notify();
+
+ // getting info
+ // ------------
+
+ // return true if the timer is running
+ virtual bool IsRunning() const = 0;
+
+ // return the timer ID
+ int GetId() const { return m_idTimer; }
+
+ // get the (last) timer interval in milliseconds
+ int GetInterval() const { return m_milli; }
+
+ // return true if the timer is one shot
+ bool IsOneShot() const { return m_oneShot; }
+
+protected:
+ // common part of all ctors
+ void Init()
+ { m_owner = NULL; m_idTimer = wxID_ANY; m_milli = 0; m_oneShot = false; }
+
+ wxEvtHandler *m_owner;
+ int m_idTimer;
+ int m_milli; // the timer interval
+ bool m_oneShot; // true if one shot
+
+ DECLARE_NO_COPY_CLASS(wxTimerBase)
+};
+
+// ----------------------------------------------------------------------------
+// wxTimer itself
+// ----------------------------------------------------------------------------
+