mirror of
https://github.com/reactos/reactos.git
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113 lines
No EOL
2.9 KiB
C++
113 lines
No EOL
2.9 KiB
C++
/*
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* ReactOS Task Manager
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*
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* proclist.cpp
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*
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* Copyright (C) 1999 - 2001 Brian Palmer <brianp@reactos.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "stdafx.h"
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#include "taskmgr.h"
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#include "ProcessPage.h"
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#include "proclist.h"
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#include "perfdata.h"
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LRESULT CALLBACK ProcessListWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
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LONG OldProcessListWndProc;
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LRESULT CALLBACK ProcessListWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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HBRUSH hbrBackground;
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RECT rcItem;
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RECT rcClip;
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HDC hDC;
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int DcSave;
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switch (message)
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{
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case WM_ERASEBKGND:
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//
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// The list control produces a nasty flicker
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// when the user is resizing the window because
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// it erases the background to white, then
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// paints the list items over it.
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//
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// We will clip the drawing so that it only
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// erases the parts of the list control that
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// show only the background.
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//
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//
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// Get the device context and save it's state
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// to be restored after we're done
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//
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hDC = (HDC) wParam;
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DcSave = SaveDC(hDC);
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//
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// Get the background brush
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//
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hbrBackground = (HBRUSH) GetClassLong(hWnd, GCL_HBRBACKGROUND);
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//
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// Calculate the clip rect by getting the RECT
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// of the first and last items and adding them up.
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//
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// We also have to get the item's icon RECT and
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// subtract it from our clip rect because we don't
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// use icons in this list control.
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//
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ListView_GetItemRect(hWnd, 0, &rcClip, LVIR_BOUNDS);
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ListView_GetItemRect(hWnd, ListView_GetItemCount(hWnd) - 1, &rcItem, LVIR_BOUNDS);
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rcClip.bottom = rcItem.bottom;
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ListView_GetItemRect(hWnd, 0, &rcItem, LVIR_ICON);
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rcClip.left = rcItem.right;
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//
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// Now exclude the clip rect
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//
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ExcludeClipRect(hDC, rcClip.left, rcClip.top, rcClip.right, rcClip.bottom);
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//
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// Now erase the background
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//
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//
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// FIXME: Should I erase it myself or
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// pass down the updated HDC and let
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// the default handler do it?
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//
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GetClientRect(hWnd, &rcItem);
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FillRect(hDC, &rcItem, hbrBackground);
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//
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// Now restore the DC state that we
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// saved earlier
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//
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RestoreDC(hDC, DcSave);
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return TRUE;
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}
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//
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// We pass on all messages except WM_ERASEBKGND
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//
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return CallWindowProc((WNDPROC)OldProcessListWndProc, hWnd, message, wParam, lParam);
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} |