CRichEditCtrl实现MSN/QQ动画表情

首先对标题说明一下，在MSN中，聊天的窗口可能是一个自定义的类。大家用Spy ++可以看看。对与自定义窗口，可以使用CreateWindow, SetWindowLong或者是SubclassWindow实现，不过这不是我现在讨论的话题。

好，先看看效果再说：

关于这个的实现。我们首先应该明了，我们必须实现一个OLE对象。而且这个对象能够播放GIF.对于播放GIF,代码已经很多了。

有了这个就完了么？当然不是。你还有写一个OLE/COM对象。实现IOleObject等。你是用ATL还是MFC呢？我什么也没有用。在这个目录下%PRogram file%\tencent\QQ\,你可以看到一个ImageOle.dll，她就是你日夜思念的人！

好吧，让我们来看看他的真面目。怎么看？X Ray? 当然不是——OLE/COM Viewer.Click on “All Objects”,View TypeLib... 打开那个文件，你可以看到：

[

uuid(0C1CF2DF-05A3-4FEF-8CD4-F5CFC4355A16),

helpstring("IGifAnimator Interface"),

dual,

nonextensible

]

dispinterface IGifAnimator {

properties:

methods:

[id(0x00000001), helpstring("method LoadFromFile")]

void LoadFromFile([in] BSTR FileName);

[id(0x00000002), helpstring("method TriggerFrameChange")]

VARIANT_BOOL TriggerFrameChange();

[id(0x00000003), helpstring("method GetFilePath")]

BSTR GetFilePath();

[id(0x00000004), helpstring("method ShowText")]

void ShowText([in] BSTR Text);

};

这个接口就是我们要的。你可以用ActiveX Control Test Container测试一下。还挺管用的。

以下给出代码:

首先我们导入ImageOle.dll

#import "D:\\Program files\\tencent\\qq\\ImageOle.dll" named_guidsnamed_guids 表示让编译器为我把对应库的GUID和声明对应起来。我们就可以用CLSID_GifAnimator引用对应的接口了。不用那一长串的东西。然后它就会为我们生成两个文件。

更多内容请看MSN图像 MSN专题 QQ表情专题，或

ImageOle.tlh

1// Created by Microsoft (R) C/C++ Compiler Version 12.00.8168.0 (9de7951a).

2//

3// d:\myproject\msger\debug\ImageOle.tlh

4//

5// C++ source equivalent of Win32 type library D:\\Program files\\tencent\\qq\\ImageOle.dll

6// compiler-generated file created 10/25/04 at 22:00:58 - DO NOT EDIT!

7#pragma once

8#pragma pack(push, 8)

9#include

11namespace ImageOleLib {

13//

14// Forward references and typedefs

15//

17strUCt /* coclass */ GifAnimator;

18struct __declspec(uuid("0c1cf2df-05a3-4fef-8cd4-f5cfc4355a16"))

19/* dual interface */ IGifAnimator;

21//

22// Smart pointer typedef declarations

23//

25_COM_SMARTPTR_TYPEDEF(IGifAnimator, __uuidof(IGifAnimator));

27//

28// Type library items

29//

31struct __declspec(uuid("06ada938-0fb0-4bc0-b19b-0a38ab17f182"))

32GifAnimator;

33 // [ default ] interface IGifAnimator

35struct __declspec(uuid("0c1cf2df-05a3-4fef-8cd4-f5cfc4355a16"))

36IGifAnimator : IDispatch

37{

38 //

39 // Wrapper methods for error-handling

40 //

42 HRESULT LoadFromFile (

43 _bstr_t FileName );

44 VARIANT_BOOL TriggerFrameChange ( );

45 _bstr_t GetFilePath ( );

46 HRESULT ShowText (

47 _bstr_t Text );

49 //

50 // Raw methods provided by interface

51 //

53 virtual HRESULT __stdcall raw_LoadFromFile (

54 BSTR FileName ) = 0;

55 virtual HRESULT __stdcall raw_TriggerFrameChange (

56 VARIANT_BOOL * pbChanged ) = 0;

57 virtual HRESULT __stdcall raw_GetFilePath (

58 BSTR * pFilePath ) = 0;

59 virtual HRESULT __stdcall raw_ShowText (

60 BSTR Text ) = 0;

61};

63//

64// Named GUID constants initializations

65//

67extern "C" const GUID __declspec(selectany) LIBID_ImageOleLib =

68 {0x710993a2,0x4f87,0x41d7,{0xb6,0xfe,0xf5,0xa2,0x03,0x68,0x46,0x5f}};

69extern "C" const GUID __declspec(selectany) CLSID_GifAnimator =

70 {0x06ada938,0x0fb0,0x4bc0,{0xb1,0x9b,0x0a,0x38,0xab,0x17,0xf1,0x82}};

71extern "C" const GUID __declspec(selectany) IID_IGifAnimator =

72 {0x0c1cf2df,0x05a3,0x4fef,{0x8c,0xd4,0xf5,0xcf,0xc4,0x35,0x5a,0x16}};

74//

75// Wrapper method implementations

76//

77#include "d:\myproject\msger\debug\ImageOle.tli"

79} // namespace ImageOleLib

80#pragma pack(pop)

更多内容请看MSN图像 MSN专题 QQ表情专题，或

ImageOle.tli

1// Created by Microsoft (R) C/C++ Compiler Version 12.00.8168.0 (9de7951a).

2//

3// d:\myproject\msger\debug\ImageOle.tli

4//

5// Wrapper implementations for Win32 type library D:\\Program files\\tencent\\qq\\ImageOle.dll

6// compiler-generated file created 10/25/04 at 22:00:58 - DO NOT EDIT!

7#pragma once

9//

10// interface IGifAnimator wrapper method implementations

11//

13inline HRESULT IGifAnimator::LoadFromFile ( _bstr_t FileName ) {

14 HRESULT _hr = raw_LoadFromFile(FileName);

15 if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));

16 return _hr;

17}

19inline VARIANT_BOOL IGifAnimator::TriggerFrameChange ( ) {

20 VARIANT_BOOL _result;

21 HRESULT _hr = raw_TriggerFrameChange(&_result);

22 if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));

23 return _result;

24}

26inline _bstr_t IGifAnimator::GetFilePath ( ) {

27 BSTR _result;

28 HRESULT _hr = raw_GetFilePath(&_result);

29 if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));

30 return _bstr_t(_result, false);

31}

33inline HRESULT IGifAnimator::ShowText ( _bstr_t Text ) {

34 HRESULT _hr = raw_ShowText(Text);

35 if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));

36 return _hr;

37}

有了这些，你使用接口和函数就很方便了。

然后就这样：

WINOLEAPI CoInitializeEx(LPVOID pvReserved, DWord dwCoInit)

为什么要这样呢？因为我们使用这个函数。那有必要这样么？在MSDN是说要 #define _DCOM_ 就行了。可惜我没有成功。就只好这样了。

接着就是实现代码了。现在看应该没有很大的问题。假如还是很难明白。那么我你得好好研究CRichEditCtrl和OLE了。听说Inside OLE和Inside COM很好。我没有弄到。就看了《COM+编程指南》和潘爱民的《COM原理和应用》，不错！还有一个好东西。就是 ActiveX Control Test Container 的源代码。

更多内容请看MSN图像 MSN专题 QQ表情专题，或

最后该出场的就是实现代码了。

1 LPLOCKBYTES lpLockBytes = NULL;

2 SCODE sc;

3 HRESULT hr;

4 //print to RichEdit' s IClientSite

5 LPOLECLIENTSITE m_lpClientSite;

6 //A smart point to IAnimator

7 IGifAnimatorPtr m_lpAnimator;

8 //ptr 2 storage

9 LPSTORAGE m_lpStorage;

10 //the object 2 b insert 2

11 LPOLEOBJECT m_lpObject;

13 //Create lockbytes

14 sc = ::CreateILockBytesOnHGlobal(NULL, TRUE, &lpLockBytes);

15 if (sc != S_OK)

16 AfxThrowOleException(sc);

17 ASSERT(lpLockBytes != NULL);

19 //use lockbytes to create storage

20 sc = ::StgCreateDocfileOnILockBytes(lpLockBytes,

21 STGM_SHARE_EXCLUSIVESTGM_CREATESTGM_READWRITE, 0, &m_lpStorage);

22 if (sc != S_OK)

23 {

24 VERIFY(lpLockBytes->Release() == 0);

25 lpLockBytes = NULL;

26 AfxThrowOleException(sc);

27 }

28 ASSERT(m_lpStorage != NULL);

30 //get the ClientSite of the very RichEditCtrl

31 GetIRichEditOle()->GetClientSite(&m_lpClientSite);

32 ASSERT(m_lpClientSite != NULL);

34 try

35 {

36 //Initlize COM interface

37 hr = ::CoInitializeEx( NULL, COINIT_APARTMENTTHREADED );

38 if( FAILED(hr) )

39 _com_issue_error(hr);

41 //Get GifAnimator object

42 //here, I used a smart point, so I do not need to free it

43 hr = m_lpAnimator.CreateInstance(CLSID_GifAnimator);

44 if( FAILED(hr) )

45 _com_issue_error(hr);

46 //COM Operation need BSTR, so get a BSTR

47 BSTR path = strPicPath.AllocSysString();

49 //Load the gif

50 hr = m_lpAnimator->LoadFromFile(path);

51 if( FAILED(hr) )

52 _com_issue_error(hr);

54 TRACE0( m_lpAnimator->GetFilePath() );

56 //get the IOleObject

57 hr = m_lpAnimator.QueryInterface(IID_IOleObject, (void**)&m_lpObject);

58 if( FAILED(hr) )

59 _com_issue_error(hr);

61 //Set it 2 b inserted

62 OleSetContainedObject(m_lpObject, TRUE);

64 //2 insert in 2 richedit, you need a struct of REOBJECT

65 REOBJECT reobject;

66 ZeroMemory(&reobject, sizeof(REOBJECT));

68 reobject.cbStruct = sizeof(REOBJECT);

69 CLSID clsid;

70 sc = m_lpObject->GetUserClassID(&clsid);

71 if (sc != S_OK)

72 AfxThrowOleException(sc);

73 //set clsid

74 reobject.clsid = clsid;

75 //can be selected

76 reobject.cp = REO_CP_SELECTION;

77 //content, but not static

78 reobject.dvaspect = DVASPECT_CONTENT;

79 //goes in the same line of text line

80 reobject.dwFlags = REO_BELOWBASELINE; //REO_RESIZABLE

81 reobject.dwUser = 0;

82 //the very object

83 reobject.poleobj = m_lpObject;

84 //client site contain the object

85 reobject.polesite = m_lpClientSite;

86 //the storage

87 reobject.pstg = m_lpStorage;

89 SIZEL sizel;

90 sizel.cx = sizel.cy = 0;

91 reobject.sizel = sizel;

92 HWND hWndRT = this->m_hWnd;

93 //Sel all text

94// ::SendMessage(hWndRT, EM_SETSEL, 0, -1);

95// DWORD dwStart, dwEnd;

96// ::SendMessage(hWndRT, EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);

97// ::SendMessage(hWndRT, EM_SETSEL, dwEnd+1, dwEnd+1);

98 //Insert after the line of text

99 GetIRichEditOle()->InsertObject(&reobject);

100 ::SendMessage(hWndRT, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);

101 VARIANT_BOOL ret;

102 //do frame changing

103 ret = m_lpAnimator->TriggerFrameChange();

104 //show it

105 m_lpObject->DoVerb(OLEIVERB_UIACTIVATE, NULL, m_lpClientSite, 0, m_hWnd, NULL);

106 m_lpObject->DoVerb(OLEIVERB_SHOW, NULL, m_lpClientSite, 0, m_hWnd, NULL);

107

108 //redraw the window to show animation

109 RedrawWindow();

110

111 if (m_lpClientSite)

112 {

113 m_lpClientSite->Release();

114 m_lpClientSite = NULL;

115 }

116 if (m_lpObject)

117 {

118 m_lpObject->Release();

119 m_lpObject = NULL;

120 }

121 if (m_lpStorage)

122 {

123 m_lpStorage->Release();

124 m_lpStorage = NULL;

125 }

126

127 SysFreeString(path);

128 }

129 catch( _com_error e )

130 {

131 AfxMessageBox(e.ErrorMessage());

132 ::CoUninitialize();

133 }

更多内容请看MSN图像 MSN专题 QQ表情专题，或

附：Delphi版的实现

unit Unit1;

interface

uses

Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,

StdCtrls, ActiveX, ComCtrls, RxRichEd, ImageOleLib_TLB;

//RxRichEd单元是Rxlib下的RxRichEdit,一套增强功能的RichEdit

//ImageOleLib_TLB是从qq的ImageOle.dll引入的类型库

const

IID_IOleObject: TGUID = (

D1: $00000112; D2: $0000; D3: $0000; D4: ($C0, $00, $00, $00, $00, $00, $00,

$46));

EM_GETOLEINTERFACE= WM_USER + 60;

type

TForm1 = class(TForm)

Button1: TButton;

Editor: TRxRichEdit;

procedure Button1Click(Sender: TObject);

private

{ Private declarations }

public

{ Public declarations }

end;

var

Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);

var

FRTF: IRichEditOle;

FLockBytes: ILockBytes;

FStorage: ISTORAGE;

FClientSite: IOLECLIENTSITE;

m_lpObject: IOleObject;

m_lpAnimator: TGifAnimator;

i_GifAnimator: IGifAnimator;

reobject: TReObject;

clsid: TGuid;

sizel: tagSize;

dwStart, dwEnd: DWORD;

Rect:TRect;

begin

try

if CreateILockBytesOnHGlobal(0, True, FLockBytes) <> S_OK then

begin

showmessage('Error to create Global Heap');

exit;

end;

//建立一个混合文档存取对象

if StgCreateDocfileOnILockBytes(FLockBytes, STGM_SHARE_EXCLUSIVE or

STGM_CREATE or STGM_READWRITE, 0, FStorage) <> S_OK then

begin

Showmessage('Error to create storage');

exit;

end;

//取得RichEdit的接口

Sendmessage(Editor.handle,EM_GETOLEINTERFACE,0,LongInt(@FRTF));

if FRTF.GetClientSite(FClientSite)<>S_OK then

begin

ShowMessage('Error to get ClentSite');

Exit;

end;

CoInitializeEx(nil, COINIT_APARTMENTTHREADED);

m_lpAnimator := TGifAnimator.Create(Self);

i_GifAnimator := m_lpAnimator.ControlInterface;

i_GifAnimator.LoadFromFile('c:\ti.gif');

i_GifAnimator.QueryInterface(IID_IOleObject, m_lpObject);

OleSetContainedObject(m_lpObject, True);

FillChar(ReObject, SizeOf(ReObject), 0);

ReObject.cbStruct := SizeOf(ReObject);

m_lpObject.GetUserClassID(clsid);

ReObject.clsid := clsid;

reobject.cp := REO_CP_SELECTION;

//content, but not static

reobject.dvaspect := DVASPECT_CONTENT;

//goes in the same line of text line

reobject.dwFlags := REO_BELOWBASELINE; //REO_RESIZABLE

reobject.dwUser := 0;

//the very object

reobject.poleobj := m_lpObject;

//client site contain the object

reobject.polesite := FClientSite;

//the storage

reobject.pstg := FStorage;

sizel.cx := 0;

sizel.cy := 0;

reobject.sizel := sizel;

//Sel all text

SendMessage(Editor.Handle, EM_SETSEL, 0, -1);

SendMessage(Editor.Handle, EM_GETSEL, dwStart, dwEnd);

SendMessage(Editor.Handle, EM_SETSEL, dwEnd + 1, dwEnd + 1);

//Insert after the line of text

FRTF.InsertObject(reobject);

SendMessage(Editor.Handle, EM_SCROLLCARET, 0, 0);

//VARIANT_BOOL ret;

//do frame changing

m_lpAnimator.TriggerFrameChange();

//show it

m_lpObject.DoVerb(OLEIVERB_UIACTIVATE, Nil, FClientSite, 0, Editor.Handle,Rect);

// m_lpObject.DoVerb(

m_lpObject.DoVerb(OLEIVERB_SHOW, Nil, FClientSite, 0, Editor.Handle, Rect);

//redraw the window to show animation

redrawwindow(Handle, nil, 0, RDW_ERASE or RDW_INVALIDATE or RDW_FRAME or RDW_ERASENOW or RDW_ALLCHILDREN);

finally

FRTF:=nil;

FClientSite := nil;

FStorage :=nil;

end;

end

更多内容请看MSN图像 MSN专题 QQ表情专题，或