[26714] | 1 | /* $Id: VBoxUtils-win.cpp 71784 2018-04-09 15:56:21Z vboxsync $ */
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[25177] | 2 | /** @file
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[71784] | 3 | * VBox Qt GUI - Declarations of utility classes and functions for handling Windows specific tasks.
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[25177] | 4 | */
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| 5 |
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| 6 | /*
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[71784] | 7 | * Copyright (C) 2010-2018 Oracle Corporation
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[25177] | 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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[71784] | 18 | /* GUI includes: */
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[35940] | 19 | #include "VBoxUtils-win.h"
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[25177] | 20 |
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[71784] | 21 |
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| 22 | /** Namespace for native window sub-system functions. */
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[35940] | 23 | namespace NativeWindowSubsystem
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[25177] | 24 | {
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[71784] | 25 | /** Enumerates visible always-on-top (top-most) windows. */
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[35940] | 26 | BOOL CALLBACK EnumWindowsProc(HWND hWnd, LPARAM lParam);
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[71784] | 27 | /** Contains visible top-most-window rectangles. */
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[35940] | 28 | QList<QRect> topMostRects;
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[25177] | 29 | }
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| 30 |
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[71784] | 31 | BOOL CALLBACK NativeWindowSubsystem::EnumWindowsProc(HWND hWnd, LPARAM)
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[25177] | 32 | {
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[35906] | 33 | /* Ignore NULL HWNDs: */
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| 34 | if (!hWnd)
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| 35 | return TRUE;
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| 36 |
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| 37 | /* Ignore hidden windows: */
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| 38 | if (!IsWindowVisible(hWnd))
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| 39 | return TRUE;
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| 40 |
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| 41 | /* Get window style: */
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| 42 | LONG uStyle = GetWindowLong(hWnd, GWL_STYLE);
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| 43 | /* Ignore minimized windows: */
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| 44 | if (uStyle & WS_MINIMIZE)
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| 45 | return TRUE;
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| 46 |
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| 47 | /* Get extended window style: */
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| 48 | LONG uExtendedStyle = GetWindowLong(hWnd, GWL_EXSTYLE);
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| 49 | /* Ignore non-top-most windows: */
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| 50 | if (!(uExtendedStyle & WS_EX_TOPMOST))
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| 51 | return TRUE;
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| 52 |
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| 53 | /* Get that window rectangle: */
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| 54 | RECT rect;
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| 55 | GetWindowRect(hWnd, &rect);
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[35940] | 56 | topMostRects << QRect(QPoint(rect.left, rect.top), QPoint(rect.right - 1, rect.bottom - 1));
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[35906] | 57 |
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| 58 | /* Proceed to the next window: */
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| 59 | return TRUE;
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| 60 | }
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| 61 |
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[35940] | 62 | const QRegion NativeWindowSubsystem::areaCoveredByTopMostWindows()
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[35906] | 63 | {
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| 64 | /* Prepare the top-most region: */
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| 65 | QRegion topMostRegion;
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| 66 | /* Initialize the list of the top-most rectangles: */
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[35940] | 67 | topMostRects.clear();
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[35906] | 68 | /* Populate the list of top-most rectangles: */
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| 69 | EnumWindows((WNDENUMPROC)EnumWindowsProc, 0);
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| 70 | /* Update the top-most region with top-most rectangles: */
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[35940] | 71 | for (int iRectIndex = 0; iRectIndex < topMostRects.size(); ++iRectIndex)
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| 72 | topMostRegion += topMostRects[iRectIndex];
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[35906] | 73 | /* Return top-most region: */
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| 74 | return topMostRegion;
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| 75 | }
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| 76 |
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