Process List

To start with, I'm basically looking to printf the current processes (windows) to the console.
Preferably something like this:

Code:

for (int i = 0; i < numOfProcs; i++)
printf("%s", process)

I know you have to enumerate the processes somehow, but I couldn't find any existing sources to take a look at.

Thanks in advance.

win32 enumerate processes - Google Search

I'm using the following code to do as I wanted but it only shows the names of 32 bit processes. The 64 bit ones return as <unknown>. Oh and the PIDs are printed fine.

Code:

#pragma comment(lib, "Psapi.lib") 
#include <windows.h>
#include <stdio.h>
#include <tchar.h>
#include <psapi.h>

void PrintProcessNameAndID( DWORD processID )
{
    TCHAR szProcessName[MAX_PATH] = TEXT("<unknown>");
    HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
                                   PROCESS_VM_READ,
                                   FALSE, processID );
    if (NULL != hProcess )
    {
        HMODULE hMod;
        DWORD cbNeeded;
        if ( EnumProcessModules( hProcess, &hMod, sizeof(hMod), 
             &cbNeeded) )
        {
            GetModuleBaseName( hProcess, hMod, szProcessName, 
                               sizeof(szProcessName)/sizeof(TCHAR) );
        }
    }
    _tprintf( TEXT("%s  (PID: %u)\n"), szProcessName, processID );
    CloseHandle( hProcess );
}

int main()
{
    DWORD aProcesses[1024], cbNeeded, cProcesses;
    unsigned int i;
	if ( !EnumProcesses( aProcesses, sizeof(aProcesses), &cbNeeded ) ) {
        return 0;
	}
    cProcesses = cbNeeded / sizeof(DWORD);
	for ( i = 0; i < cProcesses; i++ ) {
		if( aProcesses[i] != 0 ) {
			PrintProcessNameAndID( aProcesses[i] );
		}
	}
	getchar();
	return 0;
}

A little more investigation on your part, after copying and pasting the MSDN example, would have perhaps led you here, where it states:

To control whether a 64-bit application enumerates 32-bit modules, 64-bit modules, or both types of modules, use the EnumProcessModulesEx function.

So you need to modify the MSDN sample code accordingly.

Originally Posted by rags_to_riches

A little more investigation on your part, after copying and pasting the MSDN example, would have perhaps led you here, where it states:


So you need to modify the MSDN sample code accordingly.

Thanks for the response; and I apologize for my lack of reseach. Below is what I have currently.

I've also tried setting the value of dwFilterFlag to 0x02, LIST_MODULES_64BIT & LIST_MODULES_ALL. None of which have changed the output: it still can only find the 32 bit processes. Are they all invalid values to assign to dwFilterFlag?

Code:

#pragma comment(lib, "Psapi.lib") 
#include <windows.h>
#include <stdio.h>
#include <tchar.h>
#include <psapi.h>

void PrintProcessNameAndID( DWORD processID )
{
    TCHAR szProcessName[MAX_PATH] = TEXT("<unknown>");
    HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
                                   PROCESS_VM_READ,
                                   FALSE, processID );
	HANDLE hProc; 
	DWORD dwFilterFlag = 0x03;
    if (NULL != hProcess )
    {
        HMODULE hMod;
        DWORD cbNeeded;
        if ( EnumProcessModulesEx( hProcess, &hMod, sizeof(hMod), 
             &cbNeeded, dwFilterFlag) )
        {
            GetModuleBaseName( hProcess, hMod, szProcessName, 
                               sizeof(szProcessName)/sizeof(TCHAR) );
        }
    }

	_tprintf( TEXT("%s  (PID: %u).\n"), szProcessName, processID );
    CloseHandle( hProcess );
}

int main()
{
    DWORD aProcesses[1024], cbNeeded, cProcesses;
    unsigned int i;
	if ( !EnumProcesses( aProcesses, sizeof(aProcesses), &cbNeeded ) ) {
        return 0;
	}
    cProcesses = cbNeeded / sizeof(DWORD);
	for ( i = 0; i < cProcesses; i++ ) {
		if( aProcesses[i] != 0 ) {
			PrintProcessNameAndID( aProcesses[i] );
		}
	}
	getchar();
	return 0;
}