bool wxTimer::Start(
int nMilliseconds
, bool bOneShot
)
{
(void)wxTimerBase::Start( nMilliseconds
,bOneShot
);
wxCHECK_MSG( m_milli > 0L, FALSE, wxT("invalid value for timer") );
wxWindow* pWin = NULL;
if (m_owner)
{
pWin = (wxWindow*)m_owner;
m_ulId = ::WinStartTimer( m_Hab
,pWin->GetHWND()
,m_idTimer
,(ULONG)nMilliseconds
);
}
else
m_ulId = ::WinStartTimer( m_Hab
,NULLHANDLE
,0
,(ULONG)nMilliseconds
);
if (m_ulId > 0L)
{
// check that SetTimer() didn't reuse an existing id: according to
// the MSDN this can happen and this would be catastrophic to us as
// we rely on ids uniquely identifying the timers because we use
// them as keys in the hash
if ( TimerMap().find(m_ulId) != TimerMap().end() )
{
wxLogError(_("Timer creation failed."));
::WinStopTimer(m_Hab, pWin?(pWin->GetHWND()):NULL, m_ulId);
m_ulId = 0;
return false;
}
TimerMap()[m_ulId] = this;
return true;
}
else
{
wxLogSysError(_("Couldn't create a timer"));
return(FALSE);
}
}
// This gets a unique, non-zero timer ID and creates an entry in the TimerMap
UINT_PTR GetNewTimerId(wxMSWTimerImpl *t)
{
static UINT_PTR lastTimerId = 0;
while (lastTimerId == 0 ||
TimerMap().find(lastTimerId) != TimerMap().end())
{
lastTimerId = lastTimerId + 1;
}
TimerMap()[lastTimerId] = t;
return lastTimerId;
}
ULONG wxTimerProc(
HWND WXUNUSED(hwnd)
, ULONG
, int nIdTimer
, ULONG
)
{
wxTimerMap::iterator node = TimerMap().find((ULONG)nIdTimer);
wxCHECK_MSG(node != TimerMap().end(), 0,
wxT("bogus timer id in wxTimerProc") );
wxProcessTimer(*(node->second));
return 0;
}
void wxTimer::Stop()
{
if ( m_ulId )
{
if (m_owner)
{
wxWindow* pWin = (wxWindow*)m_owner;
::WinStopTimer(m_Hab, pWin->GetHWND(), m_ulId);
}
else
::WinStopTimer(m_Hab, NULLHANDLE, m_ulId);
TimerMap().erase(m_ulId);
}
m_ulId = 0L;
}
