85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
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/***************************************************************************\
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*
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* File: OSAL.h
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*
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* Description:
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* OSAL.h defines the process-wide Operating System Abstraction Layer that
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* allows DirectUser to run on different platforms.
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*
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*
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* History:
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* 1/18/2000: JStall: Created
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*
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* Copyright (C) 2000 by Microsoft Corporation. All rights reserved.
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*
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\***************************************************************************/
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#if !defined(SERVICES__OSAL_h__INCLUDED)
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#define SERVICES__OSAL_h__INCLUDED
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#pragma once
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/***************************************************************************\
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*
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* class OS
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*
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* OS abstracts out differences between various OS's including:
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* - Unicode / ANSI
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* - Platform implementation differences
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* - Version specific bugs
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*
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\***************************************************************************/
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class OSAL
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{
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// Construction
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public:
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virtual ~OSAL() { };
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static HRESULT Init();
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// USER Operations
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public:
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virtual int DrawText(HDC hDC, LPCWSTR lpString, int nCount, LPRECT lpRect, UINT uFormat) PURE;
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// GDI Operations
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public:
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virtual BOOL TextOut(HDC, int, int, LPCWSTR, int) PURE;
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virtual BOOL ExtTextOut(HDC, int, int, UINT, const RECT *, LPCWSTR, int, const int *) PURE;
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virtual HFONT CreateFontIndirect(CONST LOGFONTW *) PURE;
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virtual BOOL GetTextExtentPoint32(HDC, LPCWSTR, int, LPSIZE) PURE;
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virtual BOOL GetTextExtentExPoint(HDC, LPCWSTR, int, int, LPINT, LPINT, LPSIZE) PURE;
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// DirectUser/Core
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public:
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virtual void PushXForm(HDC hdc, XFORM * pxfOld) PURE;
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virtual void PopXForm(HDC hdc, const XFORM * pxfOld) PURE;
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virtual void RotateDC(HDC hdc, float flRotationRad) PURE;
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virtual void ScaleDC(HDC hdc, float flScaleX, float flScaleY) PURE;
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virtual void TranslateDC(HDC hdc, float flOffsetX, float flOffsetY) PURE;
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virtual void SetWorldTransform(HDC hdc, const XFORM * pxf) PURE;
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virtual void SetIdentityTransform(HDC hdc) PURE;
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// DirectUser/Services
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public:
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virtual BOOL IsInsideLoaderLock() PURE;
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// Implementation
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protected:
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static inline
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BOOL IsWin98orWin2000(OSVERSIONINFO * povi);
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static inline
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BOOL IsWhistler(OSVERSIONINFO * povi);
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};
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inline BOOL SupportUnicode();
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inline BOOL SupportXForm();
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inline BOOL SupportQInputAvailable();
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inline BOOL IsRemoteSession();
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LONG WINAPI StdExceptionFilter(PEXCEPTION_POINTERS pei);
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#include "OSAL.inl"
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#endif // SERVICES__OSAL_h__INCLUDED
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