base/applications/taskmgr/priority.c

   1 /*
   2  *  ReactOS Task Manager
   3  *
   4  *  priority.c
   5  *
   6  *  Copyright (C) 1999 - 2001  Brian Palmer  <brianp@reactos.org>
   7  *                2005         Klemens Friedl <frik85@reactos.at>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include <precomp.h>
  25
  26 void DoSetPriority(DWORD priority)
  27 {
  28     LVITEM  lvitem;
  29     ULONG   Index;
  30     DWORD   dwProcessId;
  31     HANDLE  hProcess;
  32     WCHAR   szText[260];
  33     WCHAR   szTitle[256];
  34
  35     for (Index=0; Index<(ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
  36     {
  37         ZeroMemory(&lvitem, sizeof(LVITEM));
  38
  39         lvitem.mask = LVIF_STATE;
  40         lvitem.stateMask = LVIS_SELECTED;
  41         lvitem.iItem = Index;
  42
  43         (void)ListView_GetItem(hProcessPageListCtrl, &lvitem);
  44
  45         if (lvitem.state & LVIS_SELECTED)
  46             break;
  47     }
  48
  49     dwProcessId = PerfDataGetProcessId(Index);
  50
  51     if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
  52         return;
  53
  54     LoadStringW(hInst, IDS_MSG_TASKMGRWARNING, szTitle, 256);
  55     LoadStringW(hInst, IDS_MSG_WARNINGCHANGEPRIORITY, szText, 260);
  56     if (MessageBoxW(hMainWnd, szText, szTitle, MB_YESNO|MB_ICONWARNING) != IDYES)
  57         return;
  58
  59     hProcess = OpenProcess(PROCESS_SET_INFORMATION, FALSE, dwProcessId);
  60
  61     if (!hProcess)
  62     {
  63         GetLastErrorText(szText, 260);
  64         LoadStringW(hInst, IDS_MSG_UNABLECHANGEPRIORITY, szTitle, 256);
  65         MessageBoxW(hMainWnd, szText, szTitle, MB_OK|MB_ICONSTOP);
  66         return;
  67     }
  68
  69     if (!SetPriorityClass(hProcess, priority))
  70     {
  71         GetLastErrorText(szText, 260);
  72         LoadStringW(hInst, IDS_MSG_UNABLECHANGEPRIORITY, szTitle, 256);
  73         MessageBoxW(hMainWnd, szText, szTitle, MB_OK|MB_ICONSTOP);
  74     }
  75
  76     CloseHandle(hProcess);
  77 }