Kann man mit QT, den Task Manager auskundschaften?

[Spielgrips]

Gruß

und zwar kann man mit Qt eigentlich den Task Manager mit auspionieren, also seine Dienste ausgeben lassen?

Ich denke das man was mit QProcess was erreichen kann oda?

In C# ging das einigermaßen mit .NET ...

[Spielgrips]

Was, geht wohl mit Qt nicht? Oder wer kennt sich damit aus mit dem Thema???

[BartSimpson]

da muste denn schon mit der win32 API ran. Werfe mal ein Blick auf die MSDN Seiten.

[macman]

Für Win habe ich irgendwo im Netz mal ne fertige Klasse gefunden, ist aber eben Win only.

[BartSimpson]

Unter Linux währe es einfacher:) Einfach in Blick ind /proc bzw. /sys werfen:)

[macman]

Was heißt hier wäre? Ist, unter Linux ist vieles einfacher, beim Mac auch. Windows lässt sich vielleicht ganz gut bedienen, aber ansonsten... Mir gefällt es nicht, um es mal vorsichtig auszudrücken

[BartSimpson]

Es kommt halt an, was du machen willst. Wenn du "nur" eine Prouessliste haben willst, das sollte nicht als so schwierig sein.
Hier ein Auszug aus dem Platform SDK

Code: Alles auswählen

#include <windows.h>
#include <tlhelp32.h>
#include <stdio.h>

//  Forward declarations:
BOOL GetProcessList( );
BOOL ListProcessModules( DWORD dwPID );
BOOL ListProcessThreads( DWORD dwOwnerPID );
void printError( TCHAR* msg );

void main( )
{
  GetProcessList( );
}

BOOL GetProcessList( )
{
  HANDLE hProcessSnap;
  HANDLE hProcess;
  PROCESSENTRY32 pe32;
  DWORD dwPriorityClass;

  // Take a snapshot of all processes in the system.
  hProcessSnap = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );
  if( hProcessSnap == INVALID_HANDLE_VALUE )
  {
    printError( "CreateToolhelp32Snapshot (of processes)" );
    return( FALSE );
  }

  // Set the size of the structure before using it.
  pe32.dwSize = sizeof( PROCESSENTRY32 );

  // Retrieve information about the first process,
  // and exit if unsuccessful
  if( !Process32First( hProcessSnap, &pe32 ) )
  {
    printError( "Process32First" );  // Show cause of failure
    CloseHandle( hProcessSnap );     // Must clean up the snapshot object!
    return( FALSE );
  }

  // Now walk the snapshot of processes, and
  // display information about each process in turn
  do
  {
    printf( "\n\n=====================================================" );
    printf( "\nPROCESS NAME:  %s", pe32.szExeFile );
    printf( "\n-----------------------------------------------------" );

    // Retrieve the priority class.
    dwPriorityClass = 0;
    hProcess = OpenProcess( PROCESS_ALL_ACCESS, FALSE, pe32.th32ProcessID );
    if( hProcess == NULL )
      printError( "OpenProcess" );
    else
    {
      dwPriorityClass = GetPriorityClass( hProcess );
      if( !dwPriorityClass )
        printError( "GetPriorityClass" );
      CloseHandle( hProcess );
    }

    printf( "\n  process ID        = 0x%08X", pe32.th32ProcessID );
    printf( "\n  thread count      = %d",   pe32.cntThreads );
    printf( "\n  parent process ID = 0x%08X", pe32.th32ParentProcessID );
    printf( "\n  Priority Base     = %d", pe32.pcPriClassBase );
    if( dwPriorityClass )
      printf( "\n  Priority Class    = %d", dwPriorityClass );

    // List the modules and threads associated with this process
    ListProcessModules( pe32.th32ProcessID );
    ListProcessThreads( pe32.th32ProcessID );

  } while( Process32Next( hProcessSnap, &pe32 ) );

  CloseHandle( hProcessSnap );
  return( TRUE );
}


BOOL ListProcessModules( DWORD dwPID )
{
  HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
  MODULEENTRY32 me32;

  // Take a snapshot of all modules in the specified process.
  hModuleSnap = CreateToolhelp32Snapshot( TH32CS_SNAPMODULE, dwPID );
  if( hModuleSnap == INVALID_HANDLE_VALUE )
  {
    printError( "CreateToolhelp32Snapshot (of modules)" );
    return( FALSE );
  }

  // Set the size of the structure before using it.
  me32.dwSize = sizeof( MODULEENTRY32 );

  // Retrieve information about the first module,
  // and exit if unsuccessful
  if( !Module32First( hModuleSnap, &me32 ) )
  {
    printError( "Module32First" );  // Show cause of failure
    CloseHandle( hModuleSnap );     // Must clean up the snapshot object!
    return( FALSE );
  }

  // Now walk the module list of the process,
  // and display information about each module
  do
  {
    printf( "\n\n     MODULE NAME:     %s",             me32.szModule );
    printf( "\n     executable     = %s",             me32.szExePath );
    printf( "\n     process ID     = 0x%08X",         me32.th32ProcessID );
    printf( "\n     ref count (g)  =     0x%04X",     me32.GlblcntUsage );
    printf( "\n     ref count (p)  =     0x%04X",     me32.ProccntUsage );
    printf( "\n     base address   = 0x%08X", (DWORD) me32.modBaseAddr );
    printf( "\n     base size      = %d",             me32.modBaseSize );

  } while( Module32Next( hModuleSnap, &me32 ) );

  CloseHandle( hModuleSnap );
  return( TRUE );
}

BOOL ListProcessThreads( DWORD dwOwnerPID ) 
{ 
  HANDLE hThreadSnap = INVALID_HANDLE_VALUE; 
  THREADENTRY32 te32; 
 
  // Take a snapshot of all running threads  
  hThreadSnap = CreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 ); 
  if( hThreadSnap == INVALID_HANDLE_VALUE ) 
    return( FALSE ); 
 
  // Fill in the size of the structure before using it. 
  te32.dwSize = sizeof(THREADENTRY32 ); 
 
  // Retrieve information about the first thread,
  // and exit if unsuccessful
  if( !Thread32First( hThreadSnap, &te32 ) ) 
  {
    printError( "Thread32First" );  // Show cause of failure
    CloseHandle( hThreadSnap );     // Must clean up the snapshot object!
    return( FALSE );
  }

  // Now walk the thread list of the system,
  // and display information about each thread
  // associated with the specified process
  do 
  { 
    if( te32.th32OwnerProcessID == dwOwnerPID )
    {
      printf( "\n\n     THREAD ID      = 0x%08X", te32.th32ThreadID ); 
      printf( "\n     base priority  = %d", te32.tpBasePri ); 
      printf( "\n     delta priority = %d", te32.tpDeltaPri ); 
    }
  } while( Thread32Next(hThreadSnap, &te32 ) ); 

  CloseHandle( hThreadSnap );
  return( TRUE );
}

void printError( TCHAR* msg )
{
  DWORD eNum;
  TCHAR sysMsg[256];
  TCHAR* p;

  eNum = GetLastError( );
  FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
         NULL, eNum,
         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
         sysMsg, 256, NULL );

  // Trim the end of the line and terminate it with a null
  p = sysMsg;
  while( ( *p > 31 ) || ( *p == 9 ) )
    ++p;
  do { *p-- = 0; } while( ( p >= sysMsg ) &&
                          ( ( *p == '.' ) || ( *p < 33 ) ) );

  // Display the message
  printf( "\n  WARNING: %s failed with error %d (%s)", msg, eNum, sysMsg );
}