allcam.cpp

来自「用Embedded Visual C++ Win32 API开发的运行于Wind」· C++ 代码 · 共 96 行

// AllCam.cpp: implementation of the CAllCam class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "AllCam.h"

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

CAllCam::CAllCam()
{
	memset(this->Server , 0, _tcslen(this->Server )* sizeof(TCHAR));
	this->num =0; 
	this->pCam =NULL;
	this->curPos =0;
}

CAllCam::~CAllCam()
{
	if(this->pCam !=NULL)	{	free(this->pCam) ;	this->pCam =NULL;	}
}

void CAllCam::Init()
{
	memset(this->Server , 0, _tcslen(this->Server )* sizeof(TCHAR));
	this->num =0; 
	if(this->pCam !=NULL)	{	free(this->pCam) ;	this->pCam =NULL;	}
	this->curPos =0;
}

BOOL CAllCam::RetrieveFromRegistry()
{
	HKEY hKey = NULL;
	DWORD dwWord =0;
	if(::RegOpenKeyEx (HKEY_CURRENT_USER, REGPATH, 0, 0, &hKey)  != ERROR_SUCCESS)
	{
		this->InitializeRegistry ();
		if(::RegCreateKeyEx(HKEY_CURRENT_USER, REGPATH, 0, NULL, 0, 0, NULL, &hKey, &dwWord) != ERROR_SUCCESS)
			return FALSE;
	}

	this->Init ();

	DWORD dwType;
	dwWord = 255*sizeof(TCHAR);
	dwType = REG_MULTI_SZ;

	::RegQueryValueEx (hKey, _T("Server"), 0, &dwType, (LPBYTE)this->Server , &dwWord);

	DWORD dwSubKey, dwValues;

	if(::RegQueryInfoKey (hKey, NULL, NULL, NULL, &dwSubKey, NULL, NULL, &dwValues, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
	{
		::RegCloseKey (hKey);
		return FALSE;
	}

	this->num = dwSubKey;

	if(this->pCam !=NULL)	{	free(this->pCam) ;	this->pCam =NULL;	}

	do {	this->pCam = (CCamDesc *)malloc(this->num *sizeof(CCamDesc));	}while(this->pCam ==NULL);

	int index =0;
	TCHAR subKey[255];
	DWORD keySize= 255;
	CCamDesc *p;

	while(::RegEnumKeyEx (hKey, index, subKey, &keySize, NULL, NULL, NULL, NULL)!=ERROR_NO_MORE_ITEMS)
	{
		p= this->pCam + index;
		p->LoadMe (subKey);
		index++;
		keySize= 255;
	}

	::RegCloseKey (hKey);

	return TRUE;
}

BOOL CAllCam::InitializeRegistry()
{
	CCamDesc *theCam;
	for(int i=0; i<this->num ; i++)
	{
		theCam = this->pCam ;
		theCam +=i;
		theCam->SaveMe ();
	}
	return TRUE;
}