ProSysLib: Dissecting the Process

// PSLProcesses.h : Declaration of the CPSLProcesses

#pragma once
#include "resource.h"       // main symbols
#include "GUIDs.h"
#include "PSLExceptions.h"
#include "ProSysLib_i.h"

DECLARE_PSL_COLLECTION(Processes, Process);

class ATL_NO_VTABLE CPSLProcesses:
	public CComObjectRootEx<CComMultiThreadModel>,
	public CComCoClass<CPSLProcesses, &CLSID_PSLProcesses>,
	public CProcessesCollection,
	public CPSLException<&CLSID_PSLProcesses, &IID_IPSLProcesses>
{
public:

	CPSLProcesses();
	~CPSLProcesses();

	static bool Is64BitProcess(HANDLE hProcess);

BEGIN_COM_MAP(CPSLProcesses)
	COM_INTERFACE_ENTRY(IPSLProcesses)
	COM_INTERFACE_ENTRY(IDispatch)
	COM_INTERFACE_ENTRY(ISupportErrorInfo)
END_COM_MAP()

	DECLARE_PROTECT_FINAL_CONSTRUCT()
	HRESULT FinalConstruct();
	void FinalRelease();

	////////////////////////////
	// Interface Implementation:
	////////////////////////////

	STDMETHOD(get_EnumUserType)(PSLEnumUserType * pValue);
	STDMETHOD(put_EnumUserType)(PSLEnumUserType newValue);
	STDMETHOD(Find)(long ProcessID, IPSLProcess ** ppValue);
	STDMETHOD(Update)();

protected:

	virtual HRESULT OnIndexOutOfRange();
	virtual HRESULT OnInterfaceAccess();

private:

	typedef BOOL (WINAPI * IsWow64ProcessProc)(HANDLE hProcess, PBOOL Wow64Process);
	static IsWow64ProcessProc m_IsWow64Process;
	static HMODULE m_hKernelModule;

	PSLEnumUserType m_EnumType;
	_bstr_t m_sUserName; // Current User Name;

	bool m_bDirty;	// When set, means that either there's no data or data
					// is out of date and needs to be updated;
	static ULONG m_BufferSize; // Default buffer size when querying for processes;

	void InternalUpdate(bool bForceUpdate);
};