我在网上搜索了如何在
RichEditTImageTImage还有其他方法可以做到这一点吗？
我想将其插入行中，这样我就可以使用段落操作，例如在其上进行对齐（插入
TImageTJVRichEditIOleObjectOleCreateFromData()OleCreateFromFile()EM_GETOLEINTERFACE从
IRichEditOle 调用 TRichEditInsertObject()IOleObject更新：这里是MSDN在以下文章中提供的信息的粗略翻译：
如何使用 Visual C++ 6.0 中的 RichEdit 控件将位图插入 RTF 文档
uses
..., Winapi.ActiveX, RichOle;
var
RichEditOle: IRichEditOle;
LockBytes: ILockBytes;
ClientSite: IOleClientSite;
Storage: IStorage;
Image: IOleObject;
Obj: REOBJECT;
Fmt: FORMATETC;
begin
if RichEdit_GetOleInterface(RichEdit1.Handle, RichEditOle) then
begin
ZeroMemory(@Fmt, SizeOf(Fmt));
Fmt.cfFormat := 0;
Fmt.ptd := nil;
Fmt.dwAspect := DVASPECT_CONTENT;
Fmt.lindex := -1;
Fmt.tymed := TYMED_NULL;
OleCheck(CreateILockBytesOnHGlobal(nil, True, LockBytes));
OleCheck(StgCreateDocfileOnILockBytes(LockBytes, STGM_SHARE_EXCLUSIVE or STGM_CREATE or STGM_READWRITE, 0, Storage));
OleCheck(RichEditOle.GetClientSite(ClientSite));
OleCheck(OleCreateFromFile(CLSID_NULL, PChar(FileName), IOleObject, OLERENDER_DRAW, @Fmt, ClientSite, Storage, Image));
OleSetContainedObject(Image, True);
ZeroMemory(@Obj, sizeof(Obj));
Obj.cbStruct := SizeOf(Obj);
Obj.cp := REO_CP_SELECTION;
OleCheck(Image.GetUserClassID(Obj.clsid));
Obj.poleobj := Image;
Obj.pstg := Storage;
Obj.polesite := ClientSite;
Obj.sizel.cx := 0;
Obj.sizel.cx := 0;
Obj.dvaspect := DVASPECT_CONTENT;
Obj.dwFlags := 0;
Obj.dwUser := 0;
OleCheck(RichEditOle.InsertObject(Obj));
end;
end;
这是
RichOle{
RichOle.pas
Pascal version of richole.h (version: 2005 platform SDK).
Version 1.3d - always find the most current version at
http://flocke.vssd.de/prog/code/pascal/rtflabel/
Copyright (C) 2001-2009 Volker Siebert <[email protected]>
All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
}
{$I DelphiVersion.inc}
{$IFDEF CPPBUILDER}
{$HPPEMIT '#include <RichOle.h>'}
{$ENDIF}
unit RichOle;
{$WEAKPACKAGEUNIT}
{$MINENUMSIZE 4}
interface
uses
Windows, ActiveX, RichEdit;
(*
* RICHOLE.H
*
* Purpose:
* OLE Extensions to the Rich Text Editor
*
* Copyright (c) 1985-1999, Microsoft Corporation
*)
// Structure passed to GetObject and InsertObject
type
PReObject = ^TReObject;
{$IFDEF CPPBUILDER}{$EXTERNALSYM _REOBJECT}{$ENDIF}
_REOBJECT = packed record
cbStruct: DWORD; // [00] Size of structure
cp: LongInt; // [04] Character position of object
clsid: TCLSID; // [08] Class ID of object
oleobj: IOleObject; // [18] OLE object interface
stg: IStorage; // [1C] Associated storage interface
olesite: IOLEClientSite; // [20] Associated client site interface
sizel: TSize; // [24] Size of object (may be 0,0)
dvaspect: DWORD; // [2C] Display aspect to use
dwFlags: DWORD; // [30] Object status flags
dwUser: DWORD; // [34] Dword for user's use
end;
{$IFDEF CPPBUILDER}{$EXTERNALSYM REOBJECT}{$ENDIF}
REOBJECT = _reobject;
TReObject = _reobject;
const
// Flags to specify which interfaces should
// be returned in the structure above
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_GETOBJ_NO_INTERFACES}{$ENDIF}
REO_GETOBJ_NO_INTERFACES = $00000000;
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_GETOBJ_POLEOBJ}{$ENDIF}
REO_GETOBJ_POLEOBJ = $00000001;
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_GETOBJ_PSTG}{$ENDIF}
REO_GETOBJ_PSTG = $00000002;
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_GETOBJ_POLESITE}{$ENDIF}
REO_GETOBJ_POLESITE = $00000004;
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_GETOBJ_ALL_INTERFACES}{$ENDIF}
REO_GETOBJ_ALL_INTERFACES = $00000007;
// Place object at selection
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_CP_SELECTION}{$ENDIF}
REO_CP_SELECTION = -1; // why? cardinal(-1);
// Use character position to specify object instead of index
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_IOB_SELECTION}{$ENDIF}
REO_IOB_SELECTION = -1; // why? cardinal(-1);
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_IOB_USE_CP}{$ENDIF}
REO_IOB_USE_CP = -2; // why? cardinal(-2);
// Object flags
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_NULL}{$ENDIF}
REO_NULL = $00000000; // No flags
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_READWRITEMASK}{$ENDIF}
REO_READWRITEMASK = $0000003F; // Mask out RO bits
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_DONTNEEDPALETTE}{$ENDIF}
REO_DONTNEEDPALETTE = $00000020; // Object doesn't need palette
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_BLANK}{$ENDIF}
REO_BLANK = $00000010; // Object is blank
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_DYNAMICSIZE}{$ENDIF}
REO_DYNAMICSIZE = $00000008; // Object defines size always
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_INVERTEDSELECT}{$ENDIF}
REO_INVERTEDSELECT = $00000004; // Object drawn all inverted if sel
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_BELOWBASELINE}{$ENDIF}
REO_BELOWBASELINE = $00000002; // Object sits below the baseline
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_RESIZABLE}{$ENDIF}
REO_RESIZABLE = $00000001; // Object may be resized
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_LINK}{$ENDIF}
REO_LINK = $80000000; // Object is a link (RO)
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_STATIC}{$ENDIF}
REO_STATIC = $40000000; // Object is static (RO)
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_SELECTED}{$ENDIF}
REO_SELECTED = $08000000; // Object selected (RO)
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_OPEN}{$ENDIF}
REO_OPEN = $04000000; // Object open in its server (RO)
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_INPLACEACTIVE}{$ENDIF}
REO_INPLACEACTIVE = $02000000; // Object in place active (RO)
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_HILITED}{$ENDIF}
REO_HILITED = $01000000; // Object is to be hilited (RO)
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_LINKAVAILABLE}{$ENDIF}
REO_LINKAVAILABLE = $00800000; // Link believed available (RO)
{$IFDEF CPPBUILDER}{$EXTERNALSYM REO_GETMETAFILE}{$ENDIF}
REO_GETMETAFILE = $00400000; // Object requires metafile (RO)
// flags for IRichEditOle::GetClipboardData(),
// IRichEditOleCallback::GetClipboardData() and
// IRichEditOleCallback::QueryAcceptData()
{$IFDEF CPPBUILDER}{$EXTERNALSYM RECO_PASTE}{$ENDIF}
RECO_PASTE = $00000000; // paste from clipboard
{$IFDEF CPPBUILDER}{$EXTERNALSYM RECO_DROP}{$ENDIF}
RECO_DROP = $00000001; // drop
{$IFDEF CPPBUILDER}{$EXTERNALSYM RECO_COPY}{$ENDIF}
RECO_COPY = $00000002; // copy to the clipboard
{$IFDEF CPPBUILDER}{$EXTERNALSYM RECO_CUT}{$ENDIF}
RECO_CUT = $00000003; // cut to the clipboard
{$IFDEF CPPBUILDER}{$EXTERNALSYM RECO_DRAG}{$ENDIF}
RECO_DRAG = $00000004; // drag
type
(*
* IRichEditOle
*
* Purpose:
* Interface used by the client of RichEdit to perform OLE-related
* operations.
*
* //$ REVIEW:
* The methods herein may just want to be regular Windows messages.
*)
{$IFDEF CPPBUILDER}{$EXTERNALSYM IRichEditOle}{$ENDIF}
IRichEditOle = interface(IUnknown)
['{00020D00-0000-0000-C000-000000000046}']
// *** IRichEditOle methods ***
function GetClientSite(out clientSite: IOleClientSite): HRESULT; stdcall;
function GetObjectCount: LongInt; stdcall;
function GetLinkCount: LongInt; stdcall;
function GetObject(iob: LongInt; out ReObject: TReObject;
dwFlags: DWORD): HRESULT; stdcall;
function InsertObject(var ReObject: TReObject): HRESULT; stdcall;
function ConvertObject(iob: LongInt; const clsidNew: TCLSID;
lpStrUserTypeNew: LPCSTR): HRESULT; stdcall;
function ActivateAs(const clsid, clsidAs: TCLSID): HRESULT; stdcall;
function SetHostNames(lpstrContainerApp: LPCSTR;
lpstrContainerObj: LPCSTR): HRESULT; stdcall;
function SetLinkAvailable(iob: LongInt; fAvailable: BOOL): HRESULT; stdcall;
function SetDvaspect(iob: LongInt; dvaspect: DWORD): HRESULT; stdcall;
function HandsOffStorage(iob: LongInt): HRESULT; stdcall;
function SaveCompleted(iob: LongInt; const stg: IStorage): HRESULT; stdcall;
function InPlaceDeactivate: HRESULT; stdcall;
function ContextSensitiveHelp(fEnterMode: BOOL): HRESULT; stdcall;
function GetClipboardData(const chrg: TCharRange; reco: DWORD;
out dataobj: IDataObject): HRESULT; stdcall;
function ImportDataObject(const dataobj: IDataObject; cf: TClipFormat;
hMetaPict: HGLOBAL): HRESULT; stdcall;
end;
(*
* IRichEditOleCallback
*
* Purpose:
* Interface used by the RichEdit to get OLE-related stuff from the
* application using RichEdit.
*)
{$IFDEF CPPBUILDER}{$EXTERNALSYM IRichEditOleCallback}{$ENDIF}
IRichEditOleCallback = interface(IUnknown)
['{00020D03-0000-0000-C000-000000000046}']
// *** IRichEditOleCallback methods ***
function GetNewStorage(out stg: IStorage): HRESULT; stdcall;
function GetInPlaceContext(out Frame: IOleInPlaceFrame;
out Doc: IOleInPlaceUIWindow;
lpFrameInfo: POleInPlaceFrameInfo): HRESULT; stdcall;
function ShowContainerUI(fShow: BOOL): HRESULT; stdcall;
function QueryInsertObject(const clsid: TCLSID; const stg: IStorage;
cp: LongInt): HRESULT; stdcall;
function DeleteObject(const oleobj: IOleObject): HRESULT; stdcall;
function QueryAcceptData(const dataobj: IDataObject;
var cfFormat: TClipFormat; reco: DWORD; fReally: BOOL;
hMetaPict: HGLOBAL): HRESULT; stdcall;
function ContextSensitiveHelp(fEnterMode: BOOL): HRESULT; stdcall;
function GetClipboardData(const chrg: TCharRange; reco: DWORD;
out dataobj: IDataObject): HRESULT; stdcall;
function GetDragDropEffect(fDrag: BOOL; grfKeyState: DWORD;
var dwEffect: DWORD): HRESULT; stdcall;
function GetContextMenu(seltype: Word; oleobj: IOleObject;
const chrg: TCharRange; var menu: HMENU): HRESULT; stdcall;
end;
const
IID_IRichEditOle: TGUID = '{00020D00-0000-0000-C000-000000000046}';
IID_IRichEditOleCallback: TGUID = '{00020D03-0000-0000-C000-000000000046}';
{$IFDEF CPPBUILDER}{$EXTERNALSYM RichEdit_SetOleCallback}{$ENDIF}
function RichEdit_SetOleCallback(Wnd: HWND;
const Intf: IRichEditOleCallback): Boolean;
{$IFDEF CPPBUILDER}{$EXTERNALSYM RichEdit_GetOleInterface}{$ENDIF}
function RichEdit_GetOleInterface(Wnd: HWND; out Intf: IRichEditOle): Boolean;
implementation
function RichEdit_SetOleCallback(Wnd: HWND;
const Intf: IRichEditOleCallback): Boolean;
begin
Result := SendMessage(Wnd, EM_SETOLECALLBACK, 0, LongInt(Intf)) <> 0;
end;
function RichEdit_GetOleInterface(Wnd: HWND; out Intf: IRichEditOle): Boolean;
begin
Result := SendMessage(Wnd, EM_GETOLEINTERFACE, 0, LongInt(@Intf)) <> 0;
end;
end.
我混合使用了TJVRichEdit和OLE，将Word文档97-2003分配给我的OLEContainer，在Word环境中编辑后将其另存为RTF：
OLEContainer.OLEObject.SaveAs(Save_Path, $00000006);
然后将其加载到JVRichEdit中，效果很好！
下面的代码（基于 Remy 的代码 - 这基本上是他的代码的修复）将把 bmp 作为对象插入到 RTF 文档中。 我将尝试提供可以将 bmp 作为实际内联图像插入的代码。
uses
RichOle, System.Win.ComObj,
procedure InsertImageToRTF(Editor: TRichEdit; FileName: string);
var
RichEditOle: IRichEditOle;
LockBytes: ILockBytes;
ClientSite: IOleClientSite;
Storage: IStorage;
Image: IOleObject;
Obj: REOBJECT;
Fmt: FORMATETC;
Global: HGLOBAL;
ClassID: TGUID;
begin
if RichEdit_GetOleInterface(Editor.Handle, RichEditOle) then
begin
ZeroMemory(@Fmt, SizeOf(Fmt));
Fmt.cfFormat := 0;
Fmt.ptd := nil;
Fmt.dwAspect := DVASPECT_CONTENT;
Fmt.lindex := -1;
Fmt.tymed := TYMED_NULL;
// Allocate a global memory handle
Global := GlobalAlloc(GMEM_MOVEABLE or GMEM_ZEROINIT, 0);
if Global = 0 then
RaiseLastOSError;
// Create ILockBytes interface on the global memory handle
OleCheck(CreateILockBytesOnHGlobal(Global, True, LockBytes));
OleCheck(StgCreateDocfileOnILockBytes(LockBytes, STGM_SHARE_EXCLUSIVE or STGM_CREATE or STGM_READWRITE, 0, Storage));
OleCheck(RichEditOle.GetClientSite(ClientSite));
// Use the class ID for a generic embedded object
ClassID := CLSID_StdPicture;
OleCheck(OleCreateFromFile(ClassID, PChar(FileName), IOleObject, OLERENDER_DRAW, @Fmt, ClientSite, Storage, Image));
OleSetContainedObject(Image, True);
ZeroMemory(@Obj, SizeOf(Obj));
Obj.cbStruct := SizeOf(Obj);
Obj.cp := REO_CP_SELECTION;
OleCheck(Image.GetUserClassID(Obj.clsid));
Obj.oleobj := Image;
Obj.stg := Storage;
Obj.olesite := ClientSite;
Obj.sizel.cx := 0;
Obj.sizel.cx := 0;
Obj.dvaspect := DVASPECT_CONTENT;
Obj.dwFlags := 0;
Obj.dwUser := 0;
OleCheck(RichEditOle.InsertObject(Obj));
// Release the global memory handle
GlobalFree(Global);
end;
end;
procedure TMainForm.ToolButton7Click(Sender: TObject);
begin
InsertImageToRTF(Editor, 'bmp.bmp');
end;
您希望 TRichedit 成为 TWordEdit，但事实并非如此。
开箱即用的 TRichedit 不支持内联图像。您要么必须自己实现它，获取一个自定义的 Richedit 组件（我认为像 RxRichedit），要么开始考虑 ole 自动化并将其加载为 Word 文档。