看一下这个吧，里面就有到了弹出窗体
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IE 中添加工具栏
我们首先要建立一个 ActiveX Library 。将其保存为 MailIEBand.Dpr
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.
程序清单 1-7 BandUnit.pas
unit BandUnit;
interface
uses
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';
implementation
uses 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.pas
unit IEForm;
interface
uses
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
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