Display a message box with process details

displayprocessdetails.cpp

#include <iostream>
#include <sstream>
#include <windows.h>
#include <tlhelp32.h>

std::string GetProcessName(DWORD pid)
{
    std::string processName = "";
    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnapshot != INVALID_HANDLE_VALUE)
    {
        PROCESSENTRY32 processEntry;
        processEntry.dwSize = sizeof(PROCESSENTRY32);

        if (Process32First(hSnapshot, &processEntry))
        {
            do
            {
                if (processEntry.th32ProcessID == pid)
                {
                    processName = processEntry.szExeFile;
                    break;
                }
            } while (Process32Next(hSnapshot, &processEntry));
        }

        CloseHandle(hSnapshot);
    }
    return processName;
}

DWORD getppid()
{
    HANDLE hSnapshot;
    PROCESSENTRY32 pe32;
    DWORD ppid = 0, pid = GetCurrentProcessId();

    hSnapshot = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );
    __try{
        if( hSnapshot == INVALID_HANDLE_VALUE ) __leave;

        ZeroMemory( &pe32, sizeof( pe32 ) );
        pe32.dwSize = sizeof( pe32 );
        if( !Process32First( hSnapshot, &pe32 ) ) __leave;

        do{
            if( pe32.th32ProcessID == pid ){
                ppid = pe32.th32ParentProcessID;
                break;
            }
        }while( Process32Next( hSnapshot, &pe32 ) );

    }
    __finally{
        if( hSnapshot != INVALID_HANDLE_VALUE ) CloseHandle( hSnapshot );
    }
    return ppid;
}

std::string GetParentProcessName(DWORD pid)
{
    std::string parentProcessName = "";
    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnapshot != INVALID_HANDLE_VALUE)
    {
        PROCESSENTRY32 processEntry;
        processEntry.dwSize = sizeof(PROCESSENTRY32);

        if (Process32First(hSnapshot, &processEntry))
        {
            do
            {
                if (processEntry.th32ProcessID == pid)
                {
                    DWORD parentPid = processEntry.th32ParentProcessID;
                    parentProcessName = GetProcessName(parentPid);
                    break;
                }
            } while (Process32Next(hSnapshot, &processEntry));
        }

        CloseHandle(hSnapshot);
    }
    return parentProcessName;
}

void ShowProcessInfo()
{
    DWORD pid = GetCurrentProcessId();
    std::string processName = GetProcessName(pid);
    std::string parentProcessName = GetParentProcessName(pid);

    // Display the process information in a message box
    std::ostringstream oss;
    oss << "Process Name: " << processName << "\n"
        << "Process ID: " << pid << "\n"
        << "Parent Process Name: " << parentProcessName << "\n"
        << "Parent Process ID: " << getppid() << std::endl;

    MessageBoxA(NULL, oss.str().c_str(), "Process Details", MB_OK);
}

int main()
{
    ShowProcessInfo();
    return 0;
}