Shell Extensions for .NET Assemblies

// Resources.h : Resource management and related classes.

#pragma once

#include "stdafx.h"
#include <map>
#include <windows.h>

class CCriticalSection
{
public:

	// Default to the high-order WORD set, which on Win2K
	// pre-allocates the critical section. Default spin
	// count to 1024.
	CCriticalSection()
	{
		CCriticalSection(0x80000400);
	}

	// Pre-allocate a new critical section, using the spin
	// count to wait until the critical section can be created.
	CCriticalSection(DWORD dwSpinCount) :
		m_uiLockCount(0)
	{
		if (!InitializeCriticalSectionAndSpinCount(&m_cs, dwSpinCount))
			throw E_OUTOFMEMORY;
	}

	// Delete the critical section.
	~CCriticalSection() throw()
	{
		// It is the caller's responsibility to call
		// unlock enough times from the owning thread
		// before this object is destroyed.
		DeleteCriticalSection(&m_cs);
	}

	// Lock the critical section in the calling thread. This
	// will block if it is owned by one thread and attempting
	// to be locked by others.
	void Lock() throw()
	{
		EnterCriticalSection(&m_cs);
		m_uiLockCount++;
	}

	// Unlock the critical section by the owning calling thread.
	// Unlock should be called an equal number of times as Lock.
	// See get_LockCount to determine how many times to unlock.
	void Unlock() throw()
	{
		// Don't unlock more times than we've locked.
		if (m_uiLockCount)
		{
			m_uiLockCount--;
			LeaveCriticalSection(&m_cs);
		}
	}

	// Gets the net number of times Lock and Unlock were called.
	UINT get_LockCount()
	{
		return m_uiLockCount;
	}

private:

	CRITICAL_SECTION m_cs;
	UINT m_uiLockCount;
};

// TODO: Finish System.Resources.ResourceManager-like implementation.
class CResources
{
public:

	CResources() throw();
	LANGID GetCurrentUILanguage() throw();
	UINT LoadString(UINT uID, LPTSTR pszBuffer, UINT cchBuffer);

private:

	std::map<LCID, HINSTANCE> m_ResourceInstances;
	CCriticalSection m_cs;
};