Check Running Process Dev-C++

[gamesplant]

Im in the middle of creating a DLL for Game Maker (some people may know of it) and i need a way to check if a certain process is running. For example notepad.exe. If it is running return true, otherwise return false. I would appreciate any help to getting this done. Thanks.

[lord mazdak]

one way to do it is like this:

bool isRunning(string pName)
{
	unsigned long aProcesses[1024], cbNeeded, cProcesses;
	if(!EnumProcesses(aProcesses, sizeof(aProcesses), &cbNeeded))
		return;

	cProcesses = cbNeeded / sizeof(unsigned long);
	for(unsigned int i = 0; i < cProcesses; i++)
	{
		if(aProcesses[i] == 0)
			continue;

		HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, 0, aProcesses[i]);
		char buffer[50];
		GetModuleBaseName(hProcess, 0, buffer, 50);
		CloseHandle(hProcess);
		if(pName == string(buffer))
			return true;
	}
	return false;
}

[gamesplant]

Hey thanks for that. I'm getting one error when trying to compile though:

error C2664: 'GetModuleBaseNameW' : cannot convert parameter 3 from 'char [50]' to 'LPWSTR'
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

GetModuleBaseName(hProcess, 0, buffer, 50);

[Joelito]

1. Remove unicode defines in your project setings

or

2. Change from char buffer[50] to wchar_t (or any unicode types)

or

3. Change from GetModuleBaseNameW to GetModuleBaseNameA

Is the wonderfull world of ANSI vs UNICODE

[gamesplant]

Thanks, I've got it all working perfectly now. One more question. Is it possile to get the the path to the exe of the process? Thanks

[lord mazdak]

yeah, or atleast you can get the absolute path to the exe, somewhat like this:

string getFilename(const unsigned long &processID)
{
	HANDLE process;
	process = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, 0, processID);
	char buffer[256];
	GetModuleFileNameEx(process, 0, buffer, 256);
	CloseHandle(process);
	return buffer;
}

[vlad26]

hello i'm new to programing and i'm trying to monitor certain process and the posted code can do that for me but i have troubles compileing it and i was wondering witch heder files should i include thanks in advance

[jian2587]

windows.h

[BobS0327]

hello i'm new to programing and i'm trying to monitor certain process and the posted code can do that for me but i have troubles compileing it and i was wondering witch heder files should i include thanks in advance

You'll need windows.h, psapi.h and you'll have to link in psapi.lib

[vlad26]

ok thanks but i have another problem now ((( i've linked psapi.h and included windows.h
but it's doesn't want to compile i'm getting this return without a value errors help please????
thanks in advance




return-statement with no value, in function returning 'int'

[BobS0327]

ok thanks but i have another problem now ((( i've linked psapi.h and included windows.h
but it's doesn't want to compile i'm getting this return without a value errors help please????
thanks in advance




return-statement with no value, in function returning 'int'

change this

if(!EnumProcesses(aProcesses, sizeof(aProcesses), &cbNeeded))
		return;

to this:

if(!EnumProcesses(aProcesses, sizeof(aProcesses), &cbNeeded))
		return false;

[vlad26]

thanks it's working fine.Now i have another question i know i'm asking too much but, if my program name is vlad26.exe , how to change it's process name to be for example like this: vlad26process.exe

[robwhit]

rename the file.

[vlad26]

rename the file.

No, my point was to change the process name without renaming the program.

[BobS0327]

No, my point was to change the process name without renaming the program.

If you have access to the Windows DDK, then check out the documentation on the System Class Information structure. One field, UNICODESTRING processname is classified as read only. Thus, it cannot be modifed meaning that you cannot change the name of a process in task manager.