mirror of
https://github.com/kasmtech/KasmVNC.git
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79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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*
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* This 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 software 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 software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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// -=- WMHooks.h
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#ifndef __RFB_WIN32_WM_HOOKS_H__
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#define __RFB_WIN32_WM_HOOKS_H__
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#include <windows.h>
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#include <rfb/UpdateTracker.h>
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#include <rdr/Exception.h>
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#include <rfb_win32/Win32Util.h>
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namespace rfb {
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namespace win32 {
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// -=- WMHooks
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// Uses the wm_hooks DLL to intercept window messages, to get _hints_ as
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// to what may have changed on-screen. Updates are notified via a Win32
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// event, and retrieved using the getUpdates method, which is thread-safe.
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class WMHooks {
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public:
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WMHooks();
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~WMHooks();
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// Specify the event object to notify. Starts the hook subsystem if it is
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// not already active, and returns false if the hooks fail to start.
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bool setEvent(HANDLE updateEvent);
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// Copies any new updates to the UpdateTracker. Returns true if new updates
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// were added, false otherwise.
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bool getUpdates(UpdateTracker* ut);
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#ifdef _DEBUG
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// Get notifications of any messages in the given range, to any hooked window
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void setDiagnosticRange(UINT min, UINT max);
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#endif
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// * INTERNAL NOTIFICATION FUNCTION *
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void NotifyHooksRegion(const Region& r);
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protected:
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HANDLE updateEvent;
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bool updatesReady;
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SimpleUpdateTracker updates;
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};
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// -=- Support for filtering out local input events while remote connections are
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// active. Implemented using SetWindowsHookEx for portability.
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class WMBlockInput {
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public:
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WMBlockInput();
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~WMBlockInput();
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bool blockInputs(bool block);
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protected:
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bool active;
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};
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};
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};
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#endif // __RFB_WIN32_WM_HOOKS_H__
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