Source code of Windows XP (NT5)
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89 lines
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// Events.h: Definition of the FooBarEvents class
//
//////////////////////////////////////////////////////////////////////
#if !defined(__EVENTS_H__06E192AB_5CAD_11D1_B670_00A024E430AB__INCLUDED_)
#define __EVENTS_H__06E192AB_5CAD_11D1_B670_00A024E430AB__INCLUDED_
#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
#include "resource.h" // main symbols
#include "shimgvw.h"
/////////////////////////////////////////////////////////////////////////////
// FooBarEvents
class CEvents
{
public:
virtual void OnClose()
{}
virtual void OnPreviewReady()
{}
virtual void OnError()
{}
virtual void OnChangeUI()
{}
virtual void OnBestFitPress()
{}
virtual void OnActualSizePress()
{}
};
template <class T>
class CControlEvents : public CEvents,
public IConnectionPointImpl<T, &DIID_DPreviewEvents, CComDynamicUnkArray>
{
protected:
void _FireEvent( DWORD dwID, DISPPARAMS *pdisp = NULL )
{
T* pT = (T*)this;
pT->Lock();
IUnknown** pp = m_vec.begin();
while (pp < m_vec.end())
{
if (*pp != NULL)
{
DISPPARAMS disp = { NULL, NULL, 0, 0 };
if ( !pdisp )
pdisp = &disp;
IDispatch* pDispatch = reinterpret_cast<IDispatch*>(*pp);
pDispatch->Invoke(dwID, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, pdisp, NULL, NULL, NULL);
}
pp++;
}
pT->Unlock();
}
};
template <class T>
class CPreviewEvents : public CControlEvents<T>
{
public:
virtual void OnClose()
{
_FireEvent( 0x1 );
}
virtual void OnPreviewReady()
{
_FireEvent( 0x2 );
}
virtual void OnError()
{
_FireEvent( 0x3 );
}
virtual void OnBestFitPress()
{
_FireEvent( 0x4 );
}
virtual void OnActualSizePress()
{
_FireEvent( 0x5 );
}
};
#endif // !defined(__EVENTS_H__06E192AB_5CAD_11D1_B670_00A024E430AB__INCLUDED_)