421 lines
12 KiB
OpenEdge ABL
421 lines
12 KiB
OpenEdge ABL
/* @doc EXTERNAL
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*
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* Copyright (c) Microsoft Corporation. All rights reserved.
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*
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* @module TEXTSRV.H Text Service Interface |
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*
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* Define interfaces between the Text Services component and the host
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*
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* Original Author: <nl>
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* Christian Fortini
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*
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* History: <nl>
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* 8/1/95 ricksa Revised interface definition
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*/
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#ifndef _TEXTSERV_H
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#define _TEXTSERV_H
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#if _MSC_VER > 1000
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#pragma once
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#endif
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EXTERN_C const IID IID_ITextServices;
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EXTERN_C const IID IID_ITextHost;
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// Note: error code is first outside of range reserved for OLE.
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#define S_MSG_KEY_IGNORED \
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MAKE_HRESULT(SEVERITY_SUCCESS, FACILITY_ITF, 0x201)
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// Enums used by property methods
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/*
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* TXTBACKSTYLE
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*
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* @enum Defines different background styles control
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*/
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enum TXTBACKSTYLE {
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TXTBACK_TRANSPARENT = 0, //@emem background should show through
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TXTBACK_OPAQUE, //@emem erase background
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};
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/*
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* TXTHITRESULT
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*
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* @enum Defines different hitresults
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*/
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enum TXTHITRESULT {
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TXTHITRESULT_NOHIT = 0, //@emem no hit
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TXTHITRESULT_TRANSPARENT = 1, //@emem point is within the text's rectangle, but
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//in a transparent region
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TXTHITRESULT_CLOSE = 2, //@emem point is close to the text
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TXTHITRESULT_HIT = 3 //@emem dead-on hit
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};
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/*
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* TXTNATURALSIZE
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*
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* @enum useful values for TxGetNaturalSize.
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*
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* @xref <mf CTxtEdit::TxGetNaturalSize>
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*/
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enum TXTNATURALSIZE {
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TXTNS_FITTOCONTENT = 1, //@emem Get a size that fits the content
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TXTNS_ROUNDTOLINE = 2 //@emem Round to the nearest whole line.
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};
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/*
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* TXTVIEW
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*
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* @enum useful values for TxDraw lViewId parameter
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*
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* @xref <mf CTxtEdit::TxDraw>
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*/
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enum TXTVIEW {
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TXTVIEW_ACTIVE = 0,
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TXTVIEW_INACTIVE = -1
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};
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/*
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* CHANGETYPE
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*
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* @enum used for CHANGENOTIFY.dwChangeType; indicates what happened
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* for a particular change.
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*/
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enum CHANGETYPE
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{
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CN_GENERIC = 0, //@emem Nothing special happened
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CN_TEXTCHANGED = 1, //@emem the text changed
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CN_NEWUNDO = 2, //@emem A new undo action was added
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CN_NEWREDO = 4 //@emem A new redo action was added
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};
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/*
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* @struct CHANGENOTIFY |
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*
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* passed during an EN_CHANGE notification; contains information about
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* what actually happened for a change.
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*/
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struct CHANGENOTIFY {
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DWORD dwChangeType; //@field TEXT changed, etc
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void * pvCookieData; //@field cookie for the undo action
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// associated with the change.
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};
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// The TxGetPropertyBits and OnTxPropertyBitsChange methods can pass the following bits:
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// NB!!! Do NOT rely on the ordering of these bits yet; the are subject
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// to change.
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#define TXTBIT_RICHTEXT 1 // rich-text control
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#define TXTBIT_MULTILINE 2 // single vs multi-line control
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#define TXTBIT_READONLY 4 // read only text
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#define TXTBIT_SHOWACCELERATOR 8 // underline accelerator character
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#define TXTBIT_USEPASSWORD 0x10 // use password char to display text
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#define TXTBIT_HIDESELECTION 0x20 // show selection when inactive
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#define TXTBIT_SAVESELECTION 0x40 // remember selection when inactive
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#define TXTBIT_AUTOWORDSEL 0x80 // auto-word selection
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#define TXTBIT_VERTICAL 0x100 // vertical
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#define TXTBIT_SELBARCHANGE 0x200 // notification that the selection bar width
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// has changed.
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// FUTURE: move this bit to the end to
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// maintain the division between
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// properties and notifications.
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#define TXTBIT_WORDWRAP 0x400 // if set, then multi-line controls
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// should wrap words to fit the available
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// display
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#define TXTBIT_ALLOWBEEP 0x800 // enable/disable beeping
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#define TXTBIT_DISABLEDRAG 0x1000 // disable/enable dragging
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#define TXTBIT_VIEWINSETCHANGE 0x2000 // the inset changed
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#define TXTBIT_BACKSTYLECHANGE 0x4000
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#define TXTBIT_MAXLENGTHCHANGE 0x8000
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#define TXTBIT_SCROLLBARCHANGE 0x10000
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#define TXTBIT_CHARFORMATCHANGE 0x20000
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#define TXTBIT_PARAFORMATCHANGE 0x40000
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#define TXTBIT_EXTENTCHANGE 0x80000
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#define TXTBIT_CLIENTRECTCHANGE 0x100000 // the client rectangle changed
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#define TXTBIT_USECURRENTBKG 0x200000 // tells the renderer to use the current background
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// color rather than the system default for an entire line
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/*
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* ITextServices
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*
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* @class An interface extending Microsoft's Text Object Model to provide
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* extra functionality for windowless operation. In conjunction
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* with ITextHost, ITextServices provides the means by which the
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* the RichEdit control can be used *without* creating a window.
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*
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* @base public | IUnknown
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*/
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class ITextServices : public IUnknown
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{
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public:
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//@cmember Generic Send Message interface
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virtual HRESULT TxSendMessage(
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UINT msg,
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WPARAM wparam,
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LPARAM lparam,
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LRESULT *plresult) = 0;
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//@cmember Rendering
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virtual HRESULT TxDraw(
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DWORD dwDrawAspect,
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LONG lindex,
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void * pvAspect,
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DVTARGETDEVICE * ptd,
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HDC hdcDraw,
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HDC hicTargetDev,
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LPCRECTL lprcBounds,
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LPCRECTL lprcWBounds,
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LPRECT lprcUpdate,
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BOOL (CALLBACK * pfnContinue) (DWORD),
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DWORD dwContinue,
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LONG lViewId) = 0;
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//@cmember Horizontal scrollbar support
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virtual HRESULT TxGetHScroll(
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LONG *plMin,
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LONG *plMax,
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LONG *plPos,
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LONG *plPage,
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BOOL * pfEnabled ) = 0;
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//@cmember Horizontal scrollbar support
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virtual HRESULT TxGetVScroll(
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LONG *plMin,
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LONG *plMax,
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LONG *plPos,
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LONG *plPage,
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BOOL * pfEnabled ) = 0;
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//@cmember Setcursor
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virtual HRESULT OnTxSetCursor(
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DWORD dwDrawAspect,
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LONG lindex,
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void * pvAspect,
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DVTARGETDEVICE * ptd,
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HDC hdcDraw,
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HDC hicTargetDev,
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LPCRECT lprcClient,
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INT x,
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INT y) = 0;
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//@cmember Hit-test
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virtual HRESULT TxQueryHitPoint(
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DWORD dwDrawAspect,
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LONG lindex,
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void * pvAspect,
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DVTARGETDEVICE * ptd,
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HDC hdcDraw,
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HDC hicTargetDev,
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LPCRECT lprcClient,
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INT x,
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INT y,
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DWORD * pHitResult) = 0;
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//@cmember Inplace activate notification
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virtual HRESULT OnTxInPlaceActivate(LPCRECT prcClient) = 0;
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//@cmember Inplace deactivate notification
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virtual HRESULT OnTxInPlaceDeactivate() = 0;
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//@cmember UI activate notification
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virtual HRESULT OnTxUIActivate() = 0;
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//@cmember UI deactivate notification
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virtual HRESULT OnTxUIDeactivate() = 0;
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//@cmember Get text in control
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virtual HRESULT TxGetText(BSTR *pbstrText) = 0;
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//@cmember Set text in control
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virtual HRESULT TxSetText(LPCWSTR pszText) = 0;
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//@cmember Get x position of
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virtual HRESULT TxGetCurTargetX(LONG *) = 0;
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//@cmember Get baseline position
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virtual HRESULT TxGetBaseLinePos(LONG *) = 0;
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//@cmember Get Size to fit / Natural size
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virtual HRESULT TxGetNaturalSize(
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DWORD dwAspect,
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HDC hdcDraw,
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HDC hicTargetDev,
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DVTARGETDEVICE *ptd,
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DWORD dwMode,
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const SIZEL *psizelExtent,
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LONG *pwidth,
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LONG *pheight) = 0;
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//@cmember Drag & drop
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virtual HRESULT TxGetDropTarget( IDropTarget **ppDropTarget ) = 0;
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//@cmember Bulk bit property change notifications
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virtual HRESULT OnTxPropertyBitsChange(DWORD dwMask, DWORD dwBits) = 0;
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//@cmember Fetch the cached drawing size
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virtual HRESULT TxGetCachedSize(DWORD *pdwWidth, DWORD *pdwHeight)=0;
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};
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/*
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* ITextHost
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*
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* @class Interface to be used by text services to obtain text host services
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*
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* @base public | IUnknown
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*/
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class ITextHost : public IUnknown
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{
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public:
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//@cmember Get the DC for the host
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virtual HDC TxGetDC() = 0;
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//@cmember Release the DC gotten from the host
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virtual INT TxReleaseDC(HDC hdc) = 0;
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//@cmember Show the scroll bar
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virtual BOOL TxShowScrollBar(INT fnBar, BOOL fShow) = 0;
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//@cmember Enable the scroll bar
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virtual BOOL TxEnableScrollBar (INT fuSBFlags, INT fuArrowflags) = 0;
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//@cmember Set the scroll range
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virtual BOOL TxSetScrollRange(
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INT fnBar,
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LONG nMinPos,
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INT nMaxPos,
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BOOL fRedraw) = 0;
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//@cmember Set the scroll position
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virtual BOOL TxSetScrollPos (INT fnBar, INT nPos, BOOL fRedraw) = 0;
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//@cmember InvalidateRect
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virtual void TxInvalidateRect(LPCRECT prc, BOOL fMode) = 0;
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//@cmember Send a WM_PAINT to the window
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virtual void TxViewChange(BOOL fUpdate) = 0;
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//@cmember Create the caret
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virtual BOOL TxCreateCaret(HBITMAP hbmp, INT xWidth, INT yHeight) = 0;
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//@cmember Show the caret
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virtual BOOL TxShowCaret(BOOL fShow) = 0;
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//@cmember Set the caret position
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virtual BOOL TxSetCaretPos(INT x, INT y) = 0;
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//@cmember Create a timer with the specified timeout
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virtual BOOL TxSetTimer(UINT idTimer, UINT uTimeout) = 0;
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//@cmember Destroy a timer
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virtual void TxKillTimer(UINT idTimer) = 0;
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//@cmember Scroll the content of the specified window's client area
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virtual void TxScrollWindowEx (
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INT dx,
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INT dy,
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LPCRECT lprcScroll,
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LPCRECT lprcClip,
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HRGN hrgnUpdate,
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LPRECT lprcUpdate,
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UINT fuScroll) = 0;
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//@cmember Get mouse capture
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virtual void TxSetCapture(BOOL fCapture) = 0;
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//@cmember Set the focus to the text window
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virtual void TxSetFocus() = 0;
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//@cmember Establish a new cursor shape
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virtual void TxSetCursor(HCURSOR hcur, BOOL fText) = 0;
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//@cmember Converts screen coordinates of a specified point to the client coordinates
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virtual BOOL TxScreenToClient (LPPOINT lppt) = 0;
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//@cmember Converts the client coordinates of a specified point to screen coordinates
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virtual BOOL TxClientToScreen (LPPOINT lppt) = 0;
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//@cmember Request host to activate text services
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virtual HRESULT TxActivate( LONG * plOldState ) = 0;
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//@cmember Request host to deactivate text services
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virtual HRESULT TxDeactivate( LONG lNewState ) = 0;
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//@cmember Retrieves the coordinates of a window's client area
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virtual HRESULT TxGetClientRect(LPRECT prc) = 0;
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//@cmember Get the view rectangle relative to the inset
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virtual HRESULT TxGetViewInset(LPRECT prc) = 0;
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//@cmember Get the default character format for the text
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virtual HRESULT TxGetCharFormat(const CHARFORMATW **ppCF ) = 0;
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//@cmember Get the default paragraph format for the text
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virtual HRESULT TxGetParaFormat(const PARAFORMAT **ppPF) = 0;
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//@cmember Get the background color for the window
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virtual COLORREF TxGetSysColor(int nIndex) = 0;
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//@cmember Get the background (either opaque or transparent)
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virtual HRESULT TxGetBackStyle(TXTBACKSTYLE *pstyle) = 0;
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//@cmember Get the maximum length for the text
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virtual HRESULT TxGetMaxLength(DWORD *plength) = 0;
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//@cmember Get the bits representing requested scroll bars for the window
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virtual HRESULT TxGetScrollBars(DWORD *pdwScrollBar) = 0;
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//@cmember Get the character to display for password input
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virtual HRESULT TxGetPasswordChar(TCHAR *pch) = 0;
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//@cmember Get the accelerator character
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virtual HRESULT TxGetAcceleratorPos(LONG *pcp) = 0;
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//@cmember Get the native size
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virtual HRESULT TxGetExtent(LPSIZEL lpExtent) = 0;
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//@cmember Notify host that default character format has changed
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virtual HRESULT OnTxCharFormatChange (const CHARFORMATW * pcf) = 0;
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//@cmember Notify host that default paragraph format has changed
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virtual HRESULT OnTxParaFormatChange (const PARAFORMAT * ppf) = 0;
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//@cmember Bulk access to bit properties
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virtual HRESULT TxGetPropertyBits(DWORD dwMask, DWORD *pdwBits) = 0;
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//@cmember Notify host of events
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virtual HRESULT TxNotify(DWORD iNotify, void *pv) = 0;
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// Far East Methods for getting the Input Context
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//#ifdef WIN95_IME
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virtual HIMC TxImmGetContext() = 0;
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virtual void TxImmReleaseContext( HIMC himc ) = 0;
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//#endif
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//@cmember Returns HIMETRIC size of the control bar.
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virtual HRESULT TxGetSelectionBarWidth (LONG *lSelBarWidth) = 0;
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};
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//+-----------------------------------------------------------------------
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// Factories
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//------------------------------------------------------------------------
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// Text Services factory
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STDAPI CreateTextServices(
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IUnknown *punkOuter,
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ITextHost *pITextHost,
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IUnknown **ppUnk);
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typedef HRESULT (STDAPICALLTYPE * PCreateTextServices)(
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IUnknown *punkOuter,
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ITextHost *pITextHost,
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IUnknown **ppUnk);
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#endif // _TEXTSERV_H
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