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https://github.com/kasmtech/KasmVNC.git
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87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/* 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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// DeviceContext base class, wrapping Windows HDC, plus some
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// helper classes tailored to particular types of DC, such as
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// window and device DCs.
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#ifndef __RFB_WIN32_DEVICECONTEXT_H__
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#define __RFB_WIN32_DEVICECONTEXT_H__
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#include <windows.h>
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#include <rfb/PixelFormat.h>
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#include <rfb/Rect.h>
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#include <rfb_win32/TCharArray.h>
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namespace rfb {
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namespace win32 {
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// Base class, providing methods to get the bounding (clip) box,
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// and the pixel format, and access to the HDC itself.
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class DeviceContext {
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public:
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DeviceContext() : dc(0) {}
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virtual ~DeviceContext() {}
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operator HDC() const {return dc;}
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PixelFormat getPF() const;
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static PixelFormat getPF(HDC dc);
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Rect getClipBox() const;
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static Rect getClipBox(HDC dc);
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protected:
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HDC dc;
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};
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// -=- DeviceContext that opens a specific display device
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class DeviceDC : public DeviceContext {
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public:
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DeviceDC(const TCHAR* deviceName);
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~DeviceDC();
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};
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// Get a DC for a particular window's client area.
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class WindowDC : public DeviceContext {
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public:
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WindowDC(HWND wnd);
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virtual ~WindowDC();
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protected:
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HWND hwnd;
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};
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// Create a new DC, compatible with an existing one.
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class CompatibleDC : public DeviceContext {
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public:
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CompatibleDC(HDC existing);
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virtual ~CompatibleDC();
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};
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// Create a new DC, compatible with an existing one, and
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// select the specified bitmap into it.
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class BitmapDC : public CompatibleDC {
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public:
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BitmapDC(HDC hdc, HBITMAP hbitmap);
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~BitmapDC();
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protected:
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HBITMAP oldBitmap;
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};
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};
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};
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#endif
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