#ifndef _COMMON_INSTANCEDATA_HPP_
#define _COMMON_INSTANCEDATA_HPP_
#ifndef _COMMON_WINDOWS_HPP_
#include <common/windows.hpp>
#endif

class InstanceData
{
public:
	InstanceData(void);
	~InstanceData();
	static void FAR *getInstanceData(HWND hPropertyWnd);
	static void setInstanceData(HWND hPropertyWnd,void FAR *lpPointer);
  static void removeInstanceData(HWND hPropertyWnd);
private:
	InstanceData(const InstanceData &someInstanceData);
};

inline
InstanceData::InstanceData(void)
{
	return;
}

inline
InstanceData::InstanceData(const InstanceData &/*someProperty*/)
{
	return;
}

inline
InstanceData::~InstanceData()
{
	return;
}

#ifdef __FLAT__
inline
void FAR *InstanceData::getInstanceData(HWND hPropertyWnd)
{
	if(!::IsWindow(hPropertyWnd))return (void FAR*)0;
	return (void FAR*)::GetProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@NEARPTR");
}

inline
void InstanceData::setInstanceData(HWND hPropertyWnd,void FAR *lpPointer)
{
	if(!::IsWindow(hPropertyWnd))return;
	::SetProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@NEARPTR",(HANDLE)lpPointer);
	return;
}

inline
void InstanceData::removeInstanceData(HWND hPropertyWnd)
{
	if(!::IsWindow(hPropertyWnd))return;
	::RemoveProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@NEARPTR");
	return;
}
#else
inline
void FAR *InstanceData::getInstanceData(HWND hPropertyWnd)
{
	HANDLE handleSegment;
	HANDLE handleOffset;

	if(!::IsWindow(hPropertyWnd))return (void FAR*)0;
	handleSegment=::GetProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@HIWORD");
	handleOffset=::GetProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@LOWORD");
	return (void FAR*)(MK_FP(handleSegment,handleOffset));
}

inline
void InstanceData::setInstanceData(HWND hPropertyWnd,void FAR *lpPointer)
{
	if(!::IsWindow(hPropertyWnd))return;
	::SetProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@HIWORD",(HANDLE)FP_SEG(lpPointer));
	::SetProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@LOWORD",(HANDLE)FP_OFF(lpPointer));
	return;
}

inline
void InstanceData::removeInstanceData(HWND hPropertyWnd)
{
	if(!::IsWindow(hPropertyWnd))return;
	::RemoveProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@HIWORD");
	::RemoveProp(hPropertyWnd,(LPSTR)"INSTANCEDATA@@LOWORD");
	return;
}
#endif
#endif