classcontainer.cpp

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// ClassContainer.cpp: implementation of the CClassContainer class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "mixer.h"
#include "ClassContainer.h"
#include "AbException.h"
#include "AbWinException.h"

#include <sstream>
#include <algorithm>

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

using namespace std;
static CClassContainer g_stat_cClassContainer;
CClassContainer *g_GetClassContainer() {
	return &::g_stat_cClassContainer;
}

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CClassContainer::~CClassContainer()
{
	for(TLstWndClass::iterator ite=m_lstWndClass.begin();ite < m_lstWndClass.end(); ite++)
	{
		while(ite->IsInUse()) {
#ifdef _DEBUG
			stringstream stm;
			stm << "Class still in Use: "<<ite->GetName()<<ends;
			OutputDebugString(stm.str().c_str());
#endif
			ite->UnRegisterUser();
		}
		::UnregisterClass((const char*)((ite->GetAtom())|NULL),ite->GetInstance());
	}
}
ATOM CClassContainer::RegisterClass(const WNDCLASSEX &w)
{
	string strName=w.lpszClassName;
	TLstWndClass::iterator ite=find(m_lstWndClass.begin(),m_lstWndClass.end(),strName);
	if(ite != m_lstWndClass.end()) 
	{
		ite->RegisterUser();
		return ite->GetAtom();
	}
	ATOM hAtom=::RegisterClassEx(&w);
	if(!hAtom)
		throw CAbWinException(::GetLastError(),__FILE__,__LINE__,w);
	CWindowClass wcNew(strName,hAtom,w.hInstance,1);
	m_lstWndClass.push_back(wcNew);
	return hAtom;
}
void CClassContainer::UnRegisterClass(const ATOM a)
{
	TLstWndClass::iterator ite=find(m_lstWndClass.begin(),m_lstWndClass.end(),a);
	if(ite != m_lstWndClass.end()) 
	{
		ite->UnRegisterUser();
		if(!ite->IsInUse()) 
		{
			if(::UnregisterClass((const char*)((ite->GetAtom())|NULL),ite->GetInstance()) == 0)
				throw CAbException(::GetLastError(),__FILE__,__LINE__);
			m_lstWndClass.erase(ite);
		}
	}
	else
		throw CAbException(::GetLastError(),__FILE__,__LINE__);
}
bool CClassContainer::IsClassRegistered(const string &str) const
{
	TLstWndClass::iterator ite=find(m_lstWndClass.begin(),m_lstWndClass.end(),str);
	if(ite != m_lstWndClass.end()) 
		return true;
	return false;
}
bool CClassContainer::IsSystemClass(const string &str) const
{
	WNDCLASSEX sWndClass;
	if(::GetClassInfoEx(NULL,str.c_str(),&sWndClass)) //already registered
	{
		if(!IsClassRegistered(str))		//this is probably not needed since hInst=NULL
			return true;
	}
	return false;
}