程序清单1-7 BandUnit.pasunit BandUnit;interfaceuses Windows, Sysutils, Messages, Registry, Shellapi, ActiveX, Classes, ComObj, Shlobj, Dialogs, Commctrl,ShDocVW,IEForm;type TGetMailBand = class(TComObject, IDeskBand, IObjectWithSite, IPersistStreamInit) private frmIE:TForm1; m_pSite:IInputObjectSite; m_hwndParent:HWND; m_hWnd:HWND; m_dwViewMode:Integer; m_dwBandID:Integer; protected public {Declare IDeskBand methods here} function GetBandInfo(dwBandID, dwViewMode: DWORD; var pdbi: TDeskBandInfo): HResult; stdcall; function ShowDW(fShow: BOOL): HResult; stdcall; function CloseDW(dwReserved: DWORD): HResult; stdcall; function ResizeBorderDW(var prcBorder: TRect; punkToolbarSite: IUnknown; fReserved: BOOL): HResult; stdcall; function GetWindow(out wnd: HWnd): HResult; stdcall; function ContextSensitiveHelp(fEnterMode: BOOL): HResult; stdcall; {Declare IObjectWithSite methods here} function SetSite(const pUnkSite: IUnknown ):HResult; stdcall; function GetSite(const riid: TIID; out site: IUnknown):HResult;stdcall; {Declare IPersistStream methods here} function GetClassID(out classID: TCLSID): HResult; stdcall; function IsDirty: HResult; stdcall; function InitNew: HResult; stdcall; function Load(const stm: IStream): HResult; stdcall; function Save(const stm: IStream; fClearDirty: BOOL): HResult; stdcall; function GetSizeMax(out cbSize: Largeint): HResult; stdcall; end;const Class_GetMailBand: TGUID = '{954F618B-0DEC-4D1A-9317-E0FC96F87865}'; //以下是系统接口的IID 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_IOleWindow: TGUID = ( D1:$00000114;D2:$0000;D3:$0000;D4:($C0,$00,$00,$00,$00,$00,$00,$46)); IID_IInputObjectSite : TGUID = ( D1:$f1db8392;D2:$7331;D3:$11d0;D4:($8C,$99,$00,$A0,$C9,$2D,$BF,$E8)); sSID_SInternetExplorer : TGUID = '{0002DF05-0000-0000-C000-000000000046}'; sIID_IWebBrowserApp : TGUID= '{0002DF05-0000-0000-C000-000000000046}'; //面板所允许的最小宽度和高度。 MIN_SIZE_X = 54; MIN_SIZE_Y = 22; EB_CLASS_NAME = 'GetMailAddress'; implementationuses ComServ; function TGetMailBand.GetWindow(out wnd: HWnd): HResult; stdcall; begin wnd:=m_hWnd; Result:=S_OK; end;function TGetMailBand.ContextSensitiveHelp(fEnterMode: BOOL): HResult; stdcall; begin Result:=E_NOTIMPL; end;function TGetMailBand.ShowDW(fShow: BOOL): HResult; stdcall; begin if m_hWnd<>0 then if fShow then ShowWindow(m_hWnd,SW_SHOW) else ShowWindow(m_hWnd,SW_HIDE); Result:=S_OK; end;function TGetMailBand.CloseDW(dwReserved: DWORD): HResult; stdcall; begin if frmIE<>nil then frmIE.Destroy; Result:= S_OK; end;function TGetMailBand.ResizeBorderDW(var prcBorder: TRect; punkToolbarSite: IUnknown;fReserved: BOOL): HResult; stdcall; begin Result:=E_NOTIMPL; end;
function TGetMailBand.SetSite(const pUnkSite: IUnknown):HResult;stdcall; var pOleWindow:IOleWindow; pOLEcmd:IOleCommandTarget; pSP:IServiceProvider; rc:TRect; begin if Assigned(pUnkSite) then begin m_hwndParent := 0; m_pSite:=pUnkSite as IInputObjectSite; pOleWindow := PunkSIte as IOleWindow; //获得父窗口IE面板窗口的句柄 pOleWindow.GetWindow(m_hwndParent); if(m_hwndParent=0)then begin Result := E_FAIL; exit; end; //获得父窗口区域 GetClientRect(m_hwndParent, rc); if not Assigned(frmIE) then begin //建立TIEForm窗口,父窗口为m_hwndParent frmIE:=TForm1.CreateParented(m_hwndParent); m_Hwnd:=frmIE.Handle; SetWindowLong(frmIE.Handle, GWL_STYLE, GetWindowLong(frmIE.Handle, GWL_STYLE) Or WS_CHILD); //根据父窗口区域设置窗口位置 with frmIE do begin Left :=rc.Left ; Top:=rc.top; Width:=rc.Right - rc.Left; Height:=rc.Bottom - rc.Top; end; frmIE.Visible := True; //获得与浏览器相关联的Webbrowser对象。 pOLEcmd:=pUnkSite as IOleCommandTarget; pSP:=pOLEcmd as IServiceProvider; if Assigned(pSP)then begin pSP.QueryService(IWebbrowserApp, IWebbrowser2,frmIE.IEThis); end; end; end; Result := S_OK; end;function TGetMailBand.GetSite(const riid: TIID; out site: IUnknown):HResult;stdcall; begin if Assigned(m_pSite) then result:=m_pSite.QueryInterface(riid, site) else Result:= E_FAIL; end;function TGetMailBand.GetBandInfo(dwBandID, dwViewMode: DWORD; var pdbi: TDeskBandInfo): HResult; stdcall; begin Result:=E_INVALIDARG; if not Assigned(frmIE) then frmIE:=TForm1.CreateParented(m_hwndParent); if(@pdbi<>nil)then begin m_dwBandID := dwBandID; m_dwViewMode := dwViewMode; if(pdbi.dwMask and DBIM_MINSIZE)<>0 then begin pdbi.ptMinSize.x := MIN_SIZE_X; pdbi.ptMinSize.y := MIN_SIZE_Y; end; if(pdbi.dwMask and DBIM_MAXSIZE)<>0 then begin pdbi.ptMaxSize.x := -1; pdbi.ptMaxSize.y := -1; end; if(pdbi.dwMask and DBIM_INTEGRAL)<>0 then begin pdbi.ptIntegral.x := 1; pdbi.ptIntegral.y := 1; end; if(pdbi.dwMask and DBIM_ACTUAL)<>0 then begin pdbi.ptActual.x := 0; pdbi.ptActual.y := 0; end; if(pdbi.dwMask and DBIM_MODEFLAGS)<>0 then pdbi.dwModeFlags := DBIMF_VARIABLEHEIGHT; if(pdbi.dwMask and DBIM_BKCOLOR)<>0 then pdbi.dwMask := pdbi.dwMask and (not DBIM_BKCOLOR); end; end; function TGetMailBand.GetClassID(out classID: TCLSID): HResult; stdcall; begin classID:= Class_GetMailBand; Result:=S_OK; end;function TGetMailBand.IsDirty: HResult; stdcall; begin Result:=S_FALSE; end;function TGetMailBand.InitNew: HResult; begin Result := E_NOTIMPL; end;function TGetMailBand.Load(const stm: IStream): HResult; stdcall; begin Result:=S_OK; end;function TGetMailBand.Save(const stm: IStream; fClearDirty: BOOL): HResult; stdcall; begin Result:=S_OK; end;function TGetMailBand.GetSizeMax(out cbSize: Largeint): HResult; stdcall; begin Result:=E_NOTIMPL; end; //TIEClassFac类实现COM组件的注册 type TIEClassFac=class(TComObjectFactory) // public procedure UpdateRegistry(Register: Boolean); override; end;procedure TIEClassFac.UpdateRegistry(Register: Boolean); var ClassID: string; a:Integer; begin inherited UpdateRegistry(Register); if Register then begin ClassID:=GUIDToString(Class_GetMailBand); with TRegistry.Create do try //添加附加的注册表项 RootKey:=HKEY_LOCAL_MACHINE; OpenKey('\SOFTWARE\Microsoft\Internet Explorer\Toolbar',False); a:=0; WriteBinaryData(GUIDToString(Class_GetMailBand),a,0); OpenKey('\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved',True); WriteString (GUIDToString(Class_GetMailBand),EB_CLASS_NAME); RootKey:=HKEY_CLASSES_ROOT; OpenKey('\CLSID\'+GUIDToString(Class_GetMailBand),False); WriteString('',EB_CLASS_NAME); finally Free; end; end else begin with TRegistry.Create do try RootKey:=HKEY_LOCAL_MACHINE; OpenKey('\SOFTWARE\Microsoft\Internet Explorer\Toolbar',False); DeleteValue(GUIDToString(Class_GetMailBand)); OpenKey('\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved',False); DeleteValue(GUIDToString(Class_GetMailBand)); finally Free; end; end; end;initialization TIEClassFac.Create(ComServer, TGetMailBand, Class_GetMailBand, 'GetMailAddress', '', ciMultiInstance, tmApartment); end.
程序清单1-8 IEForm.pasunit IEForm;interfaceuses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, SHDocVw,MSHTML, StdCtrls;type TForm1 = class(TForm) Button1: TButton; ComboBox1: TComboBox; procedure FormResize(Sender: TObject); procedure Button1Click(Sender: TObject); private { Private declarations } public IEThis:IWebbrowser2; { Public declarations } end;var Form1: TForm1;implementation{$R *.DFM}procedure TForm1.FormResize(Sender: TObject); begin With Button1 do begin Left := 0; Top := 0; Height:=Self.ClientHeight; end; With ComboBox1 do begin Left := Button1.Width +3; Top := 0; Height:=Self.ClientHeight; Width:=Self.ClientWidth - Left; end; end;procedure TForm1.Button1Click(Sender: TObject); var doc:IHTMLDocument2; all:IHTMLElementCollection; len,i,flag:integer; item:IHTMLElement; vAttri:Variant; begin if Assigned(IEThis)then begin ComboBox1.Clear; //获得Webbrowser对象中的文档对象 doc:=IEThis.Document as IHTMLDocument2; //获得文档中所有的HTML元素集合 all:=doc.Get_all; len:=all.Get_length; //访问HTML元素集合中的每一个元素 for i:=0 to len-1 do begin item:=all.item(i,varempty) as IHTMLElement; //如果该元素是一个链接 if item.Get_tagName = 'A'then begin flag:=0; vAttri:=item.getAttribute('protocol',flag); //获得链接属性 //如果是mailto链接则将链接的目标地址添加到ComboBox1 if vAttri = 'mailto:'then begin vAttri:=item.getAttribute('href',flag); ComboBox1.Items.Add(vAttri); end; end; end; end; end;end.编译工程,关闭所有的IE窗口,然后点击Delphi菜单的Run | Register ActiveX Server 项注册服务器。 然后打开IE,点击菜单 察看 | 工具栏 项,可以看到子菜单中多了一个GetMailAddress项,选中改项,工具栏就出现在IE工具栏中
可能是使用Hook,但是具体细节没有头绪!再议论!!
谢谢。
然后建立一个COM Object,将其保存为BandUnit.pas;然后建立一个Form,
这个窗口将作为子窗口显示在IE工具栏中,将窗口的BorderStyle属性改为bsNone,
添加一个TButton组件和一个TComboBox组件,将TButton的Caption属性改为获取全部,
然后将窗口文件其保存为IEForm.pas。
在BandUnit中,需要建立一个实现上面提到的接口的TComObject对象。如下:
TGetMailBand = class(TComObject, IDeskBand, IObjectWithSite, IPersistStreamInit)另外由于需要在COM服务器注册时添加一些注册表信息,
所以还需要建立一个继承自TComObjectFactory类的对象,
在对象的UpdateRegistry事件中编写代码添加附加的注册表信息。下面的程序清单1-6到1-8是实现COM服务器的全部程序代码:程序清单1-6 MailIEBand.dpr
library MailIEBand;uses
ComServ,
BandUnit in 'BandUnit.pas',
IEForm in 'IEForm.pas' {Form1},
MailIEBand_TLB in 'MailIEBand_TLB.pas';exports
DllGetClassObject,
DllCanUnloadNow,
DllRegisterServer,
DllUnregisterServer;{$R *.TLB}{$R *.RES}begin
end.
Windows, Sysutils, Messages, Registry, Shellapi, ActiveX, Classes, ComObj,
Shlobj, Dialogs, Commctrl,ShDocVW,IEForm;type
TGetMailBand = class(TComObject, IDeskBand, IObjectWithSite, IPersistStreamInit)
private
frmIE:TForm1;
m_pSite:IInputObjectSite;
m_hwndParent:HWND;
m_hWnd:HWND;
m_dwViewMode:Integer;
m_dwBandID:Integer;
protected public
{Declare IDeskBand methods here}
function GetBandInfo(dwBandID, dwViewMode: DWORD; var pdbi: TDeskBandInfo):
HResult; stdcall;
function ShowDW(fShow: BOOL): HResult; stdcall;
function CloseDW(dwReserved: DWORD): HResult; stdcall;
function ResizeBorderDW(var prcBorder: TRect; punkToolbarSite: IUnknown;
fReserved: BOOL): HResult; stdcall;
function GetWindow(out wnd: HWnd): HResult; stdcall;
function ContextSensitiveHelp(fEnterMode: BOOL): HResult; stdcall; {Declare IObjectWithSite methods here}
function SetSite(const pUnkSite: IUnknown ):HResult; stdcall;
function GetSite(const riid: TIID; out site: IUnknown):HResult;stdcall; {Declare IPersistStream methods here}
function GetClassID(out classID: TCLSID): HResult; stdcall;
function IsDirty: HResult; stdcall;
function InitNew: HResult; stdcall;
function Load(const stm: IStream): HResult; stdcall;
function Save(const stm: IStream; fClearDirty: BOOL): HResult; stdcall;
function GetSizeMax(out cbSize: Largeint): HResult; stdcall;
end;const
Class_GetMailBand: TGUID = '{954F618B-0DEC-4D1A-9317-E0FC96F87865}';
//以下是系统接口的IID
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_IOleWindow: TGUID = (
D1:$00000114;D2:$0000;D3:$0000;D4:($C0,$00,$00,$00,$00,$00,$00,$46)); IID_IInputObjectSite : TGUID = (
D1:$f1db8392;D2:$7331;D3:$11d0;D4:($8C,$99,$00,$A0,$C9,$2D,$BF,$E8));
sSID_SInternetExplorer : TGUID = '{0002DF05-0000-0000-C000-000000000046}';
sIID_IWebBrowserApp : TGUID= '{0002DF05-0000-0000-C000-000000000046}'; //面板所允许的最小宽度和高度。
MIN_SIZE_X = 54;
MIN_SIZE_Y = 22;
EB_CLASS_NAME = 'GetMailAddress';
implementationuses ComServ;
function TGetMailBand.GetWindow(out wnd: HWnd): HResult; stdcall;
begin
wnd:=m_hWnd;
Result:=S_OK;
end;function TGetMailBand.ContextSensitiveHelp(fEnterMode: BOOL): HResult; stdcall;
begin
Result:=E_NOTIMPL;
end;function TGetMailBand.ShowDW(fShow: BOOL): HResult; stdcall;
begin
if m_hWnd<>0 then
if fShow then
ShowWindow(m_hWnd,SW_SHOW)
else
ShowWindow(m_hWnd,SW_HIDE);
Result:=S_OK;
end;function TGetMailBand.CloseDW(dwReserved: DWORD): HResult; stdcall;
begin
if frmIE<>nil then
frmIE.Destroy;
Result:= S_OK;
end;function TGetMailBand.ResizeBorderDW(var prcBorder: TRect;
punkToolbarSite: IUnknown;fReserved: BOOL): HResult; stdcall;
begin
Result:=E_NOTIMPL;
end;
var
pOleWindow:IOleWindow;
pOLEcmd:IOleCommandTarget;
pSP:IServiceProvider;
rc:TRect;
begin
if Assigned(pUnkSite) then begin
m_hwndParent := 0; m_pSite:=pUnkSite as IInputObjectSite;
pOleWindow := PunkSIte as IOleWindow;
//获得父窗口IE面板窗口的句柄
pOleWindow.GetWindow(m_hwndParent); if(m_hwndParent=0)then begin
Result := E_FAIL;
exit;
end; //获得父窗口区域
GetClientRect(m_hwndParent, rc); if not Assigned(frmIE) then begin
//建立TIEForm窗口,父窗口为m_hwndParent
frmIE:=TForm1.CreateParented(m_hwndParent); m_Hwnd:=frmIE.Handle; SetWindowLong(frmIE.Handle, GWL_STYLE, GetWindowLong(frmIE.Handle,
GWL_STYLE) Or WS_CHILD);
//根据父窗口区域设置窗口位置
with frmIE do begin
Left :=rc.Left ;
Top:=rc.top;
Width:=rc.Right - rc.Left;
Height:=rc.Bottom - rc.Top;
end;
frmIE.Visible := True; //获得与浏览器相关联的Webbrowser对象。
pOLEcmd:=pUnkSite as IOleCommandTarget;
pSP:=pOLEcmd as IServiceProvider; if Assigned(pSP)then begin
pSP.QueryService(IWebbrowserApp, IWebbrowser2,frmIE.IEThis);
end;
end;
end; Result := S_OK;
end;function TGetMailBand.GetSite(const riid: TIID; out site: IUnknown):HResult;stdcall;
begin
if Assigned(m_pSite) then result:=m_pSite.QueryInterface(riid, site)
else
Result:= E_FAIL;
end;function TGetMailBand.GetBandInfo(dwBandID, dwViewMode: DWORD; var pdbi: TDeskBandInfo):
HResult; stdcall;
begin
Result:=E_INVALIDARG;
if not Assigned(frmIE) then frmIE:=TForm1.CreateParented(m_hwndParent);
if(@pdbi<>nil)then begin
m_dwBandID := dwBandID;
m_dwViewMode := dwViewMode; if(pdbi.dwMask and DBIM_MINSIZE)<>0 then begin
pdbi.ptMinSize.x := MIN_SIZE_X;
pdbi.ptMinSize.y := MIN_SIZE_Y;
end; if(pdbi.dwMask and DBIM_MAXSIZE)<>0 then begin
pdbi.ptMaxSize.x := -1;
pdbi.ptMaxSize.y := -1;
end; if(pdbi.dwMask and DBIM_INTEGRAL)<>0 then begin
pdbi.ptIntegral.x := 1;
pdbi.ptIntegral.y := 1;
end; if(pdbi.dwMask and DBIM_ACTUAL)<>0 then begin
pdbi.ptActual.x := 0;
pdbi.ptActual.y := 0;
end; if(pdbi.dwMask and DBIM_MODEFLAGS)<>0 then
pdbi.dwModeFlags := DBIMF_VARIABLEHEIGHT; if(pdbi.dwMask and DBIM_BKCOLOR)<>0 then
pdbi.dwMask := pdbi.dwMask and (not DBIM_BKCOLOR);
end;
end;
function TGetMailBand.GetClassID(out classID: TCLSID): HResult; stdcall;
begin
classID:= Class_GetMailBand;
Result:=S_OK;
end;function TGetMailBand.IsDirty: HResult; stdcall;
begin
Result:=S_FALSE;
end;function TGetMailBand.InitNew: HResult;
begin
Result := E_NOTIMPL;
end;function TGetMailBand.Load(const stm: IStream): HResult; stdcall;
begin
Result:=S_OK;
end;function TGetMailBand.Save(const stm: IStream; fClearDirty: BOOL): HResult; stdcall;
begin
Result:=S_OK;
end;function TGetMailBand.GetSizeMax(out cbSize: Largeint): HResult; stdcall;
begin
Result:=E_NOTIMPL;
end;
//TIEClassFac类实现COM组件的注册
type
TIEClassFac=class(TComObjectFactory) //
public
procedure UpdateRegistry(Register: Boolean); override;
end;procedure TIEClassFac.UpdateRegistry(Register: Boolean);
var
ClassID: string;
a:Integer;
begin
inherited UpdateRegistry(Register);
if Register then begin
ClassID:=GUIDToString(Class_GetMailBand);
with TRegistry.Create do
try
//添加附加的注册表项
RootKey:=HKEY_LOCAL_MACHINE;
OpenKey('\SOFTWARE\Microsoft\Internet Explorer\Toolbar',False);
a:=0;
WriteBinaryData(GUIDToString(Class_GetMailBand),a,0);
OpenKey('\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved',True);
WriteString (GUIDToString(Class_GetMailBand),EB_CLASS_NAME);
RootKey:=HKEY_CLASSES_ROOT;
OpenKey('\CLSID\'+GUIDToString(Class_GetMailBand),False);
WriteString('',EB_CLASS_NAME);
finally
Free;
end;
end
else begin
with TRegistry.Create do
try
RootKey:=HKEY_LOCAL_MACHINE;
OpenKey('\SOFTWARE\Microsoft\Internet Explorer\Toolbar',False);
DeleteValue(GUIDToString(Class_GetMailBand));
OpenKey('\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved',False);
DeleteValue(GUIDToString(Class_GetMailBand));
finally
Free;
end;
end;
end;initialization
TIEClassFac.Create(ComServer, TGetMailBand, Class_GetMailBand,
'GetMailAddress', '', ciMultiInstance, tmApartment);
end.
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
SHDocVw,MSHTML, StdCtrls;type
TForm1 = class(TForm)
Button1: TButton;
ComboBox1: TComboBox;
procedure FormResize(Sender: TObject);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
IEThis:IWebbrowser2;
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.DFM}procedure TForm1.FormResize(Sender: TObject);
begin
With Button1 do begin
Left := 0;
Top := 0;
Height:=Self.ClientHeight;
end;
With ComboBox1 do begin
Left := Button1.Width +3;
Top := 0;
Height:=Self.ClientHeight;
Width:=Self.ClientWidth - Left;
end;
end;procedure TForm1.Button1Click(Sender: TObject);
var
doc:IHTMLDocument2;
all:IHTMLElementCollection;
len,i,flag:integer;
item:IHTMLElement;
vAttri:Variant;
begin
if Assigned(IEThis)then begin
ComboBox1.Clear;
//获得Webbrowser对象中的文档对象
doc:=IEThis.Document as IHTMLDocument2;
//获得文档中所有的HTML元素集合
all:=doc.Get_all; len:=all.Get_length; //访问HTML元素集合中的每一个元素
for i:=0 to len-1 do begin
item:=all.item(i,varempty) as IHTMLElement;
//如果该元素是一个链接
if item.Get_tagName = 'A'then begin
flag:=0;
vAttri:=item.getAttribute('protocol',flag); //获得链接属性
//如果是mailto链接则将链接的目标地址添加到ComboBox1
if vAttri = 'mailto:'then begin
vAttri:=item.getAttribute('href',flag);
ComboBox1.Items.Add(vAttri);
end;
end;
end;
end;
end;end.编译工程,关闭所有的IE窗口,然后点击Delphi菜单的Run | Register ActiveX Server 项注册服务器。
然后打开IE,点击菜单 察看 | 工具栏 项,可以看到子菜单中多了一个GetMailAddress项,选中改项,工具栏就出现在IE工具栏中
上面的文章末尾有www.applevb.com,你写的?:)
但是ehom(?!)的方法我也试过了,是通过写注册表的方法把Toolbar嵌入的,可是Yahoo Messager并没有写注册表,我就是认为此处是其高明之处。但不知道如何实现。会不会使用了Hook?
希望大家继续讨论,一起进步!谢!