让DELPHI自带的richedit控件显示图片

unit RichEx;

{

2005-03-04 LiChengbin

Added:

Insert bitmap or gif into RichEdit controls from source file.

2005-01-31 LiChengbin

Usage:

Insert bitmap into RichEdit controls by IRichEditOle interface and

implementation of IDataObject interface.

Example:

InsertBitmap(RichEdit1.Handle, Image1.Picture.Bitmap);

}

interface

uses

  Windows, Messages, Graphics, ActiveX, ComObj;

const

  // Flags to specify which interfaces should be returned in the structure above

  REO_GETOBJ_NO_INTERFACES = $00000000;

  REO_GETOBJ_POLEOBJ = $00000001;

  REO_GETOBJ_PSTG = $00000002;

  REO_GETOBJ_POLESITE = $00000004;

  REO_GETOBJ_ALL_INTERFACES = $00000007;

  // Place object at selection

  REO_CP_SELECTION = $FFFFFFFF;

  // Use character position to specify object instead of index

  REO_IOB_SELECTION = $FFFFFFFF;

  REO_IOB_USE_CP = $FFFFFFFF;

  // object flags

  REO_NULL = $00000000;                      // No flags

  REO_READWRITEMASK = $0000003F;             // Mask out RO bits

  REO_DONTNEEDPALETTE = $00000020;           // object doesn't need palette

  REO_BLANK = $00000010;                     // object is blank

  REO_DYNAMICSIZE = $00000008;               // object defines size always

  REO_INVERTEDSELECT = $00000004;            // object drawn all inverted if sel

  REO_BELOWBASELINE = $00000002;             // object sits below the baseline

  REO_RESIZABLE = $00000001;                 // object may be resized

  REO_LINK = $80000000;                      // object is a link (RO)

  REO_STATIC = $40000000;                    // object is static (RO)

  REO_SELECTED = $08000000;                  // object selected (RO)

  REO_OPEN = $04000000;                      // object open in its server (RO)

  REO_INPLACEACTIVE = $02000000;             // object in place active (RO)

  REO_HILITED = $01000000;                   // object is to be hilited (RO)

  REO_LINKAVAILABLE = $00800000;             // Link believed available (RO)

  REO_GETMETAFILE = $00400000;               // object requires metafile (RO)

  // flags for IRichEditOle::GetClipboardData(),

  // IRichEditOleCallback::GetClipboardData() and

  // IRichEditOleCallback::QueryAcceptData()

  RECO_PASTE = $00000000;                    // paste from clipboard

  RECO_DROP = $00000001;                     // drop

  RECO_COPY = $00000002;                     // copy to the clipboard

  RECO_CUT = $00000003;                      // cut to the clipboard

  RECO_DRAG = $00000004;                     // drag

  EM_GETOLEINTERFACE = WM_USER + 60;

  IID_IUnknown: TGUID = (

    D1: $00000000;

    D2: $0000;

    D3: $0000;

    D4: ($C0, $00, $00, $00, $00, $00, $00, $46)

  );

  IID_IOleObject: TGUID = (

    D1: $00000112;

    D2: $0000;

    D3: $0000;

    D4: ($C0, $00, $00, $00, $00, $00, $00, $46)

  );

  IID_IGifAnimator: TGUID = '{0C1CF2DF-05A3-4FEF-8CD4-F5CFC4355A16}';

  CLASS_GifAnimator: TGUID = '{06ADA938-0FB0-4BC0-B19B-0A38AB17F182}';

type

  _ReObject = record

    cbStruct: DWORD;                         { Size of structure           }

    cp: ULONG;                               { Character position of object   }

    clsid: TCLSID;                           { class ID of object           }

    poleobj: IOleObject;                     { OLE object interface         }

    pstg: IStorage;                          { Associated storage interface   }

    polesite: IOleClientSite;                { Associated client site interface }

    sizel: TSize;                            { Size of object (may be 0,0)     }

    dvAspect: Longint;                       { Display aspect to use         }

    dwFlags: DWORD;                          { object status flags         }

    dwUser: DWORD;                           { Dword for user's use         }

  end;

  TReObject = _ReObject;

  TCharRange = record

    cpMin: Integer;

    cpMax: Integer;

  end;

  TFormatRange = record

    hdc: Integer;

    hdcTarget: Integer;

    rectRegion: TRect;

    rectPage: TRect;

    chrg: TCharRange;

  end;

  IRichEditOle = interface(IUnknown)

    ['{00020d00-0000-0000-c000-000000000046}']

    function GetClientSite(out clientSite: IOleClientSite): HResult; stdcall;

    function GetObjectCount: HResult; stdcall;

    function GetLinkCount: HResult; stdcall;

    function GetObject(iob: Longint; out reobject: TReObject; dwFlags: DWORD): HResult; stdcall;

    function InsertObject(var reobject: TReObject): HResult; stdcall;

    function ConvertObject(iob: Longint; rclsidNew: TIID; lpstrUserTypeNew: LPCSTR): HResult; stdcall;

    function ActivateAs(rclsid: TIID; rclsidAs: TIID): 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(var chrg: TCharRange; reco: DWORD; out dataobj: IDataObject): HResult; stdcall;

    function ImportDataObject(dataobj: IDataObject; cf: TClipFormat; hMetaPict: HGLOBAL): HResult; stdcall;

  end;

  // *********************************************************************//

  // interface: IGifAnimator

  // Flags:   (4544) Dual NonExtensible OleAutomation Dispatchable

  // GUID:     {0C1CF2DF-05A3-4FEF-8CD4-F5CFC4355A16}

  // *********************************************************************//

  IGifAnimator = interface(IDispatch)

    ['{0C1CF2DF-05A3-4FEF-8CD4-F5CFC4355A16}']

    procedure LoadFromFile(const FileName: WideString); safecall;

    function TriggerFrameChange: WordBool; safecall;

    function GetFilePath: WideString; safecall;

    procedure ShowText(const Text: WideString); safecall;

  end;

  // *********************************************************************//

  // DispIntf: IGifAnimatorDisp

  // Flags:   (4544) Dual NonExtensible OleAutomation Dispatchable

  // GUID:     {0C1CF2DF-05A3-4FEF-8CD4-F5CFC4355A16}

  // *********************************************************************//

  IGifAnimatorDisp = dispinterface

    ['{0C1CF2DF-05A3-4FEF-8CD4-F5CFC4355A16}']

    procedure LoadFromFile(const FileName: WideString); dispid 1;

    function TriggerFrameChange: WordBool; dispid 2;

    function GetFilePath: WideString; dispid 3;

    procedure ShowText(const Text: WideString); dispid 4;

  end;

  TBitmapOle = class(TInterfacedObject, IDataObject)

  private

    FStgm: TStgMedium;

    FFmEtc: TFormatEtc;

    procedure SetBitmap(hBitmap: HBITMAP);

    procedure GetOleObject(OleSite: IOleClientSite; Storage: IStorage; var OleObject: IOleObject);

  public

    { ======================================================================= }

    { implementation of IDataObject interface }

    function GetData(const formatetcIn: TFormatEtc; out medium: TStgMedium): HResult; stdcall;

    function GetDataHere(const formatetc: TFormatEtc; out medium: TStgMedium): HResult; stdcall;

    function QueryGetData(const formatetc: TFormatEtc): HResult; stdcall;

    function GetCanonicalFormatEtc(const formatetc: TFormatEtc; out formatetcOut: TFormatEtc): HResult; stdcall;

    function SetData(const formatetc: TFormatEtc; var medium: TStgMedium; fRelease: BOOL): HResult; stdcall;

    function EnumFormatEtc(dwDirection: Longint; out enumFormatEtc: IEnumFormatEtc): HResult; stdcall;

    function DAdvise(const formatetc: TFormatEtc; advf: Longint; const advSink: IAdviseSink; out dwConnection: Longint): HResult; stdcall;

    function DUnadvise(dwConnection: Longint): HResult; stdcall;

    function EnumDAdvise(out enumAdvise: IEnumStatData): HResult; stdcall;

    { ======================================================================= }

  end;

function InsertBitmap(hRichEdit: THandle; const FileName: string): Boolean; overload;

function InsertBitmap(hRichEdit: THandle; Bitmap: TBitmap): Boolean; overload;

function InsertGif(hRichEdit: THandle; const FileName: string): Boolean;

implementation

function GetRichEditOle(hRichEdit: THandle): IRichEditOle;

begin

  SendMessage(hRichEdit, EM_GETOLEINTERFACE, 0, Longint(@Result));

end;

function GetImage(Bitmap: TBitmap): HBITMAP;

var

  Dest: HBitmap;

  DC, MemDC: HDC;

  OldBitmap: HBITMAP;

begin

  DC := GetDC(0);

  MemDC := CreateCompatibleDC(DC);

  try

    Dest := CreateCompatibleBitmap(DC, Bitmap.Width, Bitmap.Height);

    OldBitmap := SelectObject(MemDC, Dest);

    BitBlt(MemDC, 0, 0, Bitmap.Width, Bitmap.Height, Bitmap.Canvas.Handle, 0, 0, SRCCOPY);

    SelectObject(MemDC, OldBitmap);

  finally

    DeleteDC(MemDC);

    ReleaseDC(0, DC);

  end;

  Result := Dest;

end;

function TBitmapOle.GetData(const formatetcIn: TFormatEtc; out medium: TStgMedium): HResult; stdcall;

begin

  medium.tymed := TYMED_GDI;

  medium.hBitmap := OleDuplicateData(FStgm.hBitmap, CF_BITMAP, 0);

  medium.unkForRelease := nil;

  if medium.hBitmap = 0 then

    Result := E_HANDLE

  else

    Result := S_OK;

end;

function TBitmapOle.GetDataHere(const formatetc: TFormatEtc; out medium: TStgMedium): HResult; stdcall;

begin

  Result := E_NOTIMPL;

end;

function TBitmapOle.QueryGetData(const formatetc: TFormatEtc): HResult; stdcall;

begin

  Result := E_NOTIMPL;

end;

function TBitmapOle.GetCanonicalFormatEtc(const formatetc: TFormatEtc; out formatetcOut: TFormatEtc): HResult; stdcall;

begin

  Result := E_NOTIMPL;

end;

function TBitmapOle.SetData(const formatetc: TFormatEtc; var medium: TStgMedium; fRelease: BOOL): HResult; stdcall;

begin

  FStgm := medium;

  FFmEtc := formatetc;

  Result := S_OK;

end;

function TBitmapOle.EnumFormatEtc(dwDirection: Longint; out enumFormatEtc: IEnumFormatEtc): HResult; stdcall;

begin

  Result := E_NOTIMPL;

end;

function TBitmapOle.DAdvise(const formatetc: TFormatEtc; advf: Longint; const advSink: IAdviseSink; out dwConnection: Longint): HResult; stdcall;

begin

  Result := E_NOTIMPL;

end;

function TBitmapOle.DUnadvise(dwConnection: Longint): HResult; stdcall;

begin

  Result := E_NOTIMPL;

end;

function TBitmapOle.EnumDAdvise(out enumAdvise: IEnumStatData): HResult; stdcall;

begin

  Result := E_NOTIMPL;

end;

procedure TBitmapOle.GetOleObject(OleSite: IOleClientSite; Storage: IStorage; var OleObject: IOleObject);

begin

  OleCheck(OleCreateStaticFromData(Self, IID_IOleObject, OLERENDER_FORMAT, @FFmEtc, OleSite, Storage, OleObject));

end;

procedure TBitmapOle.SetBitmap(hBitmap: hBitmap);

var

  Stgm: TStgMedium;

  FmEtc: TFormatEtc;

begin

  Stgm.tymed := TYMED_GDI;                   // Storage medium = HBITMAP handle

  Stgm.hBitmap := hBitmap;

  Stgm.unkForRelease := nil;

  FmEtc.cfFormat := CF_BITMAP;               // Clipboard format = CF_BITMAP

  FmEtc.ptd := nil;                          // Target Device = Screen

  FmEtc.dwAspect := DVASPECT_CONTENT;        // Level of detail = Full content

  FmEtc.lindex := -1;                        // Index = Not applicaple

  FmEtc.tymed := TYMED_GDI;                  // Storage medium = HBITMAP handle

  SetData(FmEtc, Stgm, True);

end;

function InsertBitmap(hRichEdit: THandle; const FileName: string): Boolean;

var

  ReOle: IRichEditOle;

  OleSite: IOleClientSite;

  Storage: IStorage;

  LockBytes: ILockBytes;

  OleObject: IOleObject;

  ReObj: TReObject;

  TempOle: IUnknown;

  FormatEtc: TFormatEtc;

begin

  ReOle := GetRichEditOle(hRichEdit);

  Assert(ReOle <> nil, 'RichEditOle is null!');

  ReOle.GetClientSite(OleSite);

  OleCheck(CreateILockBytesOnHGlobal(0, True, LockBytes));

  Assert(LockBytes <> nil, 'LockBytes is null!');

  OleCheck(StgCreateDocfileOnILockBytes(LockBytes, STGM_SHARE_EXCLUSIVE or STGM_CREATE or STGM_READWRITE, 0, Storage));

  Assert(Storage <> nil, 'Storage is null!');

  OleCheck(OleCreateFromFile(GUID_NULL, PWideChar(WideString(FileName)), IID_IUnknown, 0, @FormatEtc, OleSite, Storage, TempOle));

  OleCheck(TempOle.QueryInterface(IID_IOleObject, OleObject));

  OleCheck(OleSetContainedObject(OleObject, True));

  Assert(OleObject <> nil, 'OleObject is null!');

  FillChar(ReObj, Sizeof(ReObj), 0);

  ReObj.cbStruct := Sizeof(ReObj);

  OleCheck(OleObject.GetUserClassID(ReObj.clsid));

  ReObj.cp := REO_CP_SELECTION;

  ReObj.dvaspect := DVASPECT_CONTENT;

  ReObj.poleobj := OleObject;

  ReObj.polesite := OleSite;

  ReObj.pstg := Storage;

  ReObj.dwUser := 0;

  ReObj.sizel.cx := 0;

  ReObj.sizel.cy := 0;

  ReOle.InsertObject(ReObj);

  Result := True;

end;

function InsertBitmap(hRichEdit: THandle; Bitmap: TBitmap): Boolean;

var

  ReOle: IRichEditOle;

  BitmapOle: TBitmapOle;

  OleSite: IOleClientSite;

  Storage: IStorage;

  LockBytes: ILockBytes;

  OleObject: IOleObject;

  ReObj: TReObject;

begin

  ReOle := GetRichEditOle(hRichEdit);

  Assert(ReOle <> nil, 'RichEditOle is null!');

  BitmapOle := TBitmapOle.Create;

  try

    BitmapOle.SetBitmap(GetImage(Bitmap));

    ReOle.GetClientSite(OleSite);

    OleCheck(CreateILockBytesOnHGlobal(0, True, LockBytes));

    Assert(LockBytes <> nil, 'LockBytes is null!');

    OleCheck(StgCreateDocfileOnILockBytes(LockBytes, STGM_SHARE_EXCLUSIVE or STGM_CREATE or STGM_READWRITE, 0, Storage));

    Assert(Storage <> nil, 'Storage is null!');

    BitmapOle.GetOleObject(OleSite, Storage, OleObject);

    OleCheck(OleSetContainedObject(OleObject, True));

    FillChar(ReObj, Sizeof(ReObj), 0);

    ReObj.cbStruct := Sizeof(ReObj);

    OleCheck(OleObject.GetUserClassID(ReObj.clsid));

    ReObj.cp := REO_CP_SELECTION;

    ReObj.dvaspect := DVASPECT_CONTENT;

    ReObj.poleobj := OleObject;

    ReObj.polesite := OleSite;

    ReObj.pstg := Storage;

    ReOle.InsertObject(ReObj);

    Result := True;

  finally

    BitmapOle.Free;

  end;

end;

function InsertGif(hRichEdit: THandle; const FileName: string): Boolean;

var

  ReOle: IRichEditOle;

  OleSite: IOleClientSite;

  Storage: IStorage;

  LockBytes: ILockBytes;

  OleObject: IOleObject;

  ReObj: TReObject;

  Animator: IGifAnimator;

begin

  ReOle := GetRichEditOle(hRichEdit);

  Assert(ReOle <> nil, 'RichEditOle is null!');

  Assert(FileName <> '', 'FileName is null!');

  ReOle.GetClientSite(OleSite);

  OleCheck(CreateILockBytesOnHGlobal(0, True, LockBytes));

  Assert(LockBytes <> nil, 'LockBytes is null!');

  OleCheck(StgCreateDocfileOnILockBytes(LockBytes, STGM_SHARE_EXCLUSIVE or STGM_CREATE or STGM_READWRITE, 0, Storage));

  Assert(Storage <> nil, 'Storage is null!');

  Animator := IUnknown(CreateComObject(CLASS_GifAnimator)) as IGifAnimator;

  Animator.LoadFromFile(PWideChar(WideString(FileName)));

  OleCheck(Animator.QueryInterface(IID_IOleObject, OleObject));

  OleCheck(OleSetContainedObject(OleObject, True));

  FillChar(ReObj, Sizeof(ReObj), 0);

  ReObj.cbStruct := Sizeof(ReObj);

  OleCheck(OleObject.GetUserClassID(ReObj.clsid));

  ReObj.cp := REO_CP_SELECTION;

  ReObj.dvaspect := DVASPECT_CONTENT;

  ReObj.dwFlags := REO_STATIC or REO_BELOWBASELINE;

  ReObj.dwUser := 0;

  ReObj.poleobj := OleObject;

  ReObj.polesite := OleSite;

  ReObj.pstg := Storage;

  ReObj.sizel.cx := 0;

  ReObj.sizel.cy := 0;

  ReOle.InsertObject(ReObj);

  Result := True;

end;

end.

　　

让DELPHI自带的richedit控件显示图片的更多相关文章

  1. GridView控件显示图片

    与图片的二进制数据库存储和显示 1.将图片以二进制存入数据库 2.读取二进制图片在页面显示 3.设置Image控件显示从数据库中读出的二进制图片 4.GridView中ImageField以URL方式 ...

  2. VC2005中将Picture控件显示图片保存为BMP,JPG等格式

    1.在stdafx.h头文件中加入 #include <atlimage.h> 2.保存图片 方法一:   HBITMAP hBitmap = NULL; //创建位图段 BITMAPIN ...

  3. Android：ImageView控件显示图片

    1)android显示图片可以使用imageView来呈现,而且也可以通过ImageButton来实现给button添加图片. 2)在创建一个ImageView后,显示图片绑定元素是:android: ...

  4. winform下picturebox控件显示图片问题

    viewData_pictureBox.SizeMode=PictureBoxSizeMode.StretchImage;图片会自动按照比例缩放来完全显示在你的PictureBox中.

  5. Delphi中解析Xml的控件-SimDesign NativeXml

    Delphi中解析Xml的控件-SimDesign NativeXml 正在学习,感觉应用很方便.无源代码的版本还是免费的. SimDesign.NativeXml是一个delphi和bcb的XML控 ...

  6. 解决方案：带格式化文本控件（ RichText）的模板如果在InfoPath的浏览器中加载可能出现 COM 组件的80040154错误

      建议大家在微软的组件出现问题时,在GOOGLE上搜索解决方案,一般来说,总有结果:  带格式化文本控件( RichText)的模板如果在InfoPath的浏览器中加载,可能出现 COM 组件的80 ...

  7. Delphi下使用Oracle Access控件组下TOraSession控件链接

    Delphi下使用Oracle Access控件组下TOraSession控件链接数据库,使用  orsn1.Options.Direct:=true;  orsn1.Server:=IP:Port: ...

  8. 改进duilib的richedit控件的部分功能

    转载请说明原出处,谢谢~~:http://blog.csdn.net/zhuhongshu/article/details/41208207 如果要使用透明异形窗体功能,首先要改进duilib库让他本 ...

  9. 修改Delphi 10.1.2 edit控件在android的复制、剪切和粘贴样式

    Delphi 10.1.2 edit控件在android默认的复制.剪切和粘贴样式太丑,经悟能-DelphiTeacher的提示,用最简单的代码修改后稍有改观. 默认的样式: 修改后的样式: 修改FM ...

随机推荐

  1. MongoDB存储基础教程

    一.MongoDB简介 1. mangodb是一种基于分布式.文件存储的非关系型数据库 2. C++写的,性能高 3. 为web应用提供可扩展的高性能数据存储解决方案 4. 所支持的格式是json格式 ...

  2. springmvc上下文与springcontext上下文的关系

    内容摘自:springmvc与spring上下文的关系 原理区别 一直不清楚springmvc-servlet.xml配置与spring.xml两个配置文件出现的上下文关系.今天找到一上面的文章,倒是 ...

  3. spirngboot 注解方式注入自定义参数

    在代码中 @value("oracle.user") private String user; 在配置文件中 oracle.user=root

  4. Windows下RabbitMQ安装及配置

    下载rabbitmq_server以及Erlang OTP平台 安装好了启动服务就行了 也可用命令 net start RabbitMQ  或  net stop RabbitMQ 配置用户添加环境变 ...

  5. 浙江省“一卡通”异地就医，C#调用省一卡通动态库

    前言,最近学习调用 浙江省一卡通业务,主要就是调用一个DLL,动态库文件,这个动态库是浙大网新研发的. 借着自学的机会把心得体会都记录下来,方便感兴趣的小伙伴学习与讨论. 内容均系原创,欢迎大家转载分 ...

  6. nginx log 错误502 upstream sent too big header while reading response header from upstream

    cookies的值超出了范围我是说 看看了一下日志 错误502 upstream sent too big header while reading response header from upst ...

  7. 【LOJ】#2098. 「CQOI2015」多项式

    题解 令x = x - t代换一下会发现 \(\sum_{i = 0}^{n}a_i (x + t)^i = \sum_{i = 0}^{n} b_{i} x^{i}\) 剩下的就需要写高精度爆算了- ...

  8. 2019 CCPC wannfly winter camp Day 8

    E - Souls-like Game 直接线段树合并矩阵会被卡T掉,因为修改的复杂度比询问的复杂度多一个log,所以我们考虑优化修改. 修改的瓶颈在于打lazy的时候, 所以我们预处理出每个修改矩阵 ...

  9. CSS3选择器02—CSS3部分选择器

    该部分主要为CSS3新增的选择器 接上一篇 CSS(CSS3)选择器(1) 一.通用兄弟选择器: 24:E ~ F,匹配任何E元素之后的同级F元素. div ~ p{ background-color ...

  10. 网络设备Web登录检测工具device-phamer

    网络设备Web登录检测工具device-phamer   为了便于管理和维护,大部分网络都提供了Web管理接口.Kali Linux提供了一款专用检测工具device-phamer.该工具可以批量检测 ...