C / C++ / MFC

pre and code

bool CExampleDlg::CheckProcess(CString processName, int instance)<br />
{<br />
	/* Check if process still running. Just use 0 for single instance<br />
           Returns true if still running.	*/<br />
<br />
	HANDLE hSnapShot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);<br />
	PROCESSENTRY32* processInfo = new PROCESSENTRY32;<br />
	processInfo->dwSize = sizeof(PROCESSENTRY32);<br />
	bool returnValue = false;<br />
	bool handleFound = false;<br />
	DWORD processID = 0;<br />
	HANDLE CSLProcess = NULL;<br />
<br />
	// Here we are passing snapshot handle and PROCESSENTRY32 structure to Process32Next() <br />
	// function. After execution, PROCESSENTRY32 structure will contain information about a process. <br />
	// We are iterating through a loop until we got FALSE and this means there is now no process left to visit in snapshot and our pointer is at the end of snapshot.<br />
<br />
	returnValue = false;<br />
	handleFound = false;<br />
	processID = 0;	// Init it<br />
	// But first do the 1st entry on its own!<br />
	Process32First(hSnapShot,processInfo);<br />
<br />
	// See if this name matches 'processName'; 0 = match<br />
	if(strcmp(processInfo->szExeFile, processName) == 0)<br />
	{<br />
		processID = processInfo->th32ParentProcessID;<br />
		if(instance == 0)<br />
		{<br />
			returnValue = true;<br />
			handleFound = true;			// Get our entry<br />
		}<br />
		else<br />
		{<br />
			if(processID == Idux_ProcID[instance - 1])<br />
			{<br />
				handleFound = true;			// Get our entry<br />
				returnValue = true;<br />
			}<br />
		}<br />
	}<br />
	while((Process32Next(hSnapShot,processInfo)!=FALSE) && (handleFound == false))<br />
	{<br />
		// See if this name matches 'processName'; 0 = match<br />
		if(strcmp(processInfo->szExeFile, processName) == 0)<br />
		{<br />
			processID = processInfo->th32ProcessID;<br />
			if(instance == 0)<br />
			{<br />
				returnValue = true;<br />
				handleFound = true;			// Get our entry<br />
			}<br />
			else<br />
			{<br />
				if(processID == Idux_ProcID[instance - 1])<br />
				{<br />
					handleFound = true;			// Get our entry<br />
					returnValue = true;<br />
				}<br />
			}<br />
		}<br />
	}<br />
<br />
	//Don’t forget to close handle.<br />
	CloseHandle(hSnapShot);<br />
	delete processInfo;<br />
<br />
	return returnValue;<br />
}

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