myvtm/Tool/SpDeskShare/SpDeskShare.h

#pragma once

#include "resource.h"
#include "..\..\Module\mod_FreeRDPWrap\PipeCommon.h"

namespace SpDeskShareNS {

class CDuplicateCheck {
	public:
		CDuplicateCheck():hMutex(NULL) {}
		~CDuplicateCheck() {if(hMutex != NULL) {CloseHandle(hMutex); hMutex = NULL;}}
		BOOL IsDuplicated() {
			static int onlyOnce = -1;
			if(onlyOnce == -1) {
				hMutex = CreateMutex(NULL, true, "{00F2E171-F8E9-40CD-86D1-5FDC45599B02}");
				if(hMutex && GetLastError() == ERROR_ALREADY_EXISTS) {
					onlyOnce = 1;
					return TRUE;
				}
				onlyOnce = 0;
				return FALSE;
			}
			return onlyOnce == 0 ? FALSE : TRUE;

		}
private:
	HANDLE hMutex;
};

}