windows load function of dll

callDllFunction.cpp

void CChromeViewSupport::__LoadLib()
{
	typedef bool (*createChromeSupport_t)(IChromeSupportLib** ppChrome);
	static createChromeSupport_t pFunc = NULL;
	if (m_hLib == NULL)
	{
		HMODULE h = ::LoadLibrary(L"BrowserLib.dll");
		if (h)
		{
			pFunc = (createChromeSupport_t)::GetProcAddress(h, "CreateChromeSupport");
		}
		m_hLib = h;
	}
	if (m_hLib)
	{
		if (m_pChromeLib.IsNull() && pFunc)
		{
			pFunc(&m_pChromeLib);
		}
	}
}