用delphi制作*面的activex控件

首先,您要了解:
•COM的基本原理
•能被网页调用的非可视ActiveX控件必须是一种至少实现了IOleObject接口的TAutoObject组件
•利用Delphi向导生成的ActiveX控件必须继承自WinControl,所以您不能用Delphi向导生成非可视的ActiveX控件 以下例子,实现了一个非可视ActiveX,调用此控件的exeWB,相当于调用IE的打印,预览,页面设置等功能。再此基础上,还可以扩展其它的功能。 制作步骤: .打开delphi,新建一个ActiveX包。 File|new|other...|ActiveX|AxtiveX library .利用delphi向导,添加一个Automation Object。 File|new|other...|ActiveX|Automation Object 我这个项目叫WebPrint .在接下来弹出的TLB编辑窗口里面定义自己需要的接口函数 我添加需要的接口IWebPrint.print(),IWebPrint.preview()等 .实现IOleObject接口,将代码改成如下形式,红色为修改部分 将Windows添加到uses引用 uses ComObj, ActiveX, Project1_TLB, Windows; 修改 TWebPrint = class(TAutoObject,IWebPrint) 为 TWebPrint = class(TAutoObject,IOleObject , IWebPrint) 添加下段代码到TWebPrint的private段 private FOleClientSite: IOleClientSite; 添加下段代码到TWebPrint的public段 public {IOleObject}
  function SetClientSite(const clientSite: IOleClientSite): HResult;stdcall;
function GetClientSite(out clientSite: IOleClientSite): HResult;stdcall;
function SetHostNames(szContainerApp: POleStr;szContainerObj: POleStr): HResult; stdcall;
function Close(dwSaveOption: Longint): HResult; stdcall;
function SetMoniker(dwWhichMoniker: Longint; const mk: IMoniker): HResult;stdcall;
function GetMoniker(dwAssign: Longint; dwWhichMoniker: Longint;out mk: IMoniker): HResult; stdcall;
function InitFromData(const dataObject: IDataObject; fCreation: BOOL;dwReserved: Longint): HResult; stdcall;
function GetClipboardData(dwReserved: Longint;out dataObject: IDataObject): HResult; stdcall;
function DoVerb(iVerb: Longint; msg: PMsg; const activeSite: IOleClientSite;lindex: Longint; hwndParent: HWND; const posRect: TRect): HResult;stdcall;
function EnumVerbs(out enumOleVerb: IEnumOleVerb): HResult; stdcall;
function Update: HResult; stdcall;
function IsUpToDate: HResult; stdcall;
function GetUserClassID(out clsid: TCLSID): HResult; stdcall;
function GetUserType(dwFormOfType: Longint; out pszUserType: POleStr): HResult;stdcall;
function SetExtent(dwDrawAspect: Longint; const size: TPoint): HResult;stdcall;
function GetExtent(dwDrawAspect: Longint; out size: TPoint): HResult;stdcall;
function Advise(const advSink: IAdviseSink; out dwConnection: Longint): HResult;stdcall;
function Unadvise(dwConnection: Longint): HResult; stdcall;
function EnumAdvise(out enumAdvise: IEnumStatData): HResult; stdcall;
function GetMiscStatus(dwAspect: Longint; out dwStatus: Longint): HResult;stdcall;
function SetColorScheme(const logpal: TLogPalette): HResult; stdcall; //在implementation段实现IOleObject的函数功能 implementation {IOleObject} function TWebPrint.SetClientSite(const ClientSite: IOleClientSite): HResult;
begin
  if ClientSite <> nil then
   begin
      if FOleClientSite <> nil then
        begin
          Result := E_FAIL;
       Exit;
        end;
        FOleClientSite := ClientSite;
    end
    else
    begin
      FOleClientSite := nil;
    end;
    Result := S_OK;
end; function TWebPrint.GetClientSite(out clientSite: IOleClientSite): HResult;
begin
ClientSite := FOleClientSite;
Result := S_OK;
end; function TWebPrint.SetHostNames(szContainerApp: POleStr; szContainerObj: POleStr): HResult;
begin
Result := S_OK;
end; function TWebPrint.Close(dwSaveOption: Longint): HResult;
begin
  Result := E_NOTIMPL;
end; function TWebPrint.SetMoniker(dwWhichMoniker: Longint; const mk: IMoniker): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.GetMoniker(dwAssign: Longint; dwWhichMoniker: Longint; out mk: IMoniker): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.InitFromData(const dataObject: IDataObject; fCreation: BOOL; dwReserved: Longint): HResult;
begin
  Result := E_NOTIMPL;
end; function TWebPrint.GetClipboardData(dwReserved: Longint; out dataObject: IDataObject): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.DoVerb(iVerb: Longint; msg: PMsg; const activeSite: IOleClientSite; lindex: Longint; hwndParent: HWND; const posRect: TRect): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.EnumVerbs(out enumOleVerb: IEnumOleVerb): HResult;
begin
  Result := OleRegEnumVerbs(Factory.ClassID, enumOleVerb);
end; function TWebPrint.Update: HResult;
begin
Result := S_OK;
end; function TWebPrint.IsUpToDate: HResult;
begin
  Result := S_OK;
end; function TWebPrint.GetUserClassID(out clsid: TCLSID): HResult;
begin
  clsid := Factory.ClassID;
  Result := S_OK;
end; function TWebPrint.GetUserType(dwFormOfType: Longint; out pszUserType: POleStr): HResult;
begin
Result := OleRegGetUserType(Factory.ClassID, dwFormOfType, pszUserType);
end; function TWebPrint.SetExtent(dwDrawAspect: Longint; const size: TPoint): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.GetExtent(dwDrawAspect: Longint; out size: TPoint): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.Advise(const advSink: IAdviseSink; out dwConnection: Longint): HResult;
begin
  Result := E_NOTIMPL;
end; function TWebPrint.Unadvise(dwConnection: Longint): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.EnumAdvise(out enumAdvise: IEnumStatData): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.GetMiscStatus(dwAspect: Longint; out dwStatus: Longint): HResult;
begin
Result := E_NOTIMPL;
end; function TWebPrint.SetColorScheme(const logpal: TLogPalette): HResult;
begin
Result := E_NOTIMPL;
end; .实现您自己定义的接口函数功能 {ITWebPrint} procedure TWebPrint.exeWB(cmdID:TOleEnum);
var
spDoc:IHTMLDocument2;
spContainer:IOleContainer;
spIE:IWebBrowser2;
begin
  FOleClientSite.GetContainer(spContainer);
if not Assigned(spContainer) then
  begin
   messagebox(,'此对象必须作为OLE对象使用','使用方法错误',);
   exit;
end;
if spContainer.QueryInterface(IID_IHTMLDocument2,spDoc)=S_OK then
begin
   if (spDoc.parentWindow as IServiceprovider).QueryService(IWebbrowserApp, IWebBrowser2, spIE)=S_OK then
begin
    if spIE.QueryStatusWB(cmdID)= then
spIE.ExecWB(cmdID, OLECMDEXECOPT_DODEFAULT,EmptyParam,EmptyParam);
  end
  else
    begin
messagebox(,'请使用IE5.5以上版本','运行环境不正确',);
exit;
  end;
end
  else
   begin
   messagebox(,'找不到网页内容','使用方法错误',);
      exit;
end; end; 全部源码如下: unit Unit1; {$WARN SYMBOL_PLATFORM OFF} interface uses ComObj, ActiveX, Project1_TLB, Windows; type   TWebPrint = class(TAutoObject,IOleObject , IWebPrint)
  private
   FOleClientSite: IOleClientSite;
  public
{IOleObject}
function SetClientSite(const clientSite: IOleClientSite): HResult; stdcall;
function GetClientSite(out clientSite: IOleClientSite): HResult; stdcall; function SetHostNames(szContainerApp: POleStr; szContainerObj: POleStr): HResult; stdcall; function Close(dwSaveOption: Longint): HResult; stdcall; function SetMoniker(dwWhichMoniker: Longint; const mk: IMoniker): HResult; stdcall; function GetMoniker(dwAssign: Longint; dwWhichMoniker: Longint; out mk: IMoniker): HResult; stdcall; function InitFromData(const dataObject: IDataObject; fCreation: BOOL; dwReserved: Longint): HResult; stdcall; function GetClipboardData(dwReserved: Longint; out dataObject: IDataObject): HResult; stdcall; function DoVerb(iVerb: Longint; msg: PMsg; const activeSite: IOleClientSite; lindex: Longint; hwndParent: HWND; const posRect: TRect): HResult; stdcall; function EnumVerbs(out enumOleVerb: IEnumOleVerb): HResult; stdcall; function Update: HResult; stdcall; function IsUpToDate: HResult; stdcall; function GetUserClassID(out clsid: TCLSID): HResult; stdcall; function GetUserType(dwFormOfType: Longint; out pszUserType: POleStr): HResult; stdcall; function SetExtent(dwDrawAspect: Longint; const size: TPoint): HResult; stdcall; function GetExtent(dwDrawAspect: Longint; out size: TPoint): HResult; stdcall; function Advise(const advSink: IAdviseSink; out dwConnection: Longint): HResult; stdcall; function Unadvise(dwConnection: Longint): HResult; stdcall; function EnumAdvise(out enumAdvise: IEnumStatData): HResult; stdcall; function GetMiscStatus(dwAspect: Longint; out dwStatus: Longint): HResult; stdcall; function SetColorScheme(const logpal: TLogPalette): HResult; stdcall; {IWebPrint} procedure exeWB(cmdID:TOleEnum); implementation {IOleObject} function TWebPrint.SetClientSite(const ClientSite: IOleClientSite): HResult; begin if ClientSite <> nil then begin if FOleClientSite <> nil then begin Result := E_FAIL; Exit; end; FOleClientSite := ClientSite; end else begin FOleClientSite := nil; end; Result := S_OK; end; function TWebPrint.GetClientSite(out clientSite: IOleClientSite): HResult; begin ClientSite := FOleClientSite; Result := S_OK; end; function TWebPrint.SetHostNames(szContainerApp: POleStr; szContainerObj: POleStr): HResult; begin Result := S_OK; end; function TWebPrint.Close(dwSaveOption: Longint): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.SetMoniker(dwWhichMoniker: Longint; const mk: IMoniker): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.GetMoniker(dwAssign: Longint; dwWhichMoniker: Longint; out mk: IMoniker): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.InitFromData(const dataObject: IDataObject; fCreation: BOOL; dwReserved: Longint): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.GetClipboardData(dwReserved: Longint; out dataObject: IDataObject): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.DoVerb(iVerb: Longint; msg: PMsg; const activeSite: IOleClientSite; lindex: Longint; hwndParent: HWND; const posRect: TRect): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.EnumVerbs(out enumOleVerb: IEnumOleVerb): HResult; begin Result := OleRegEnumVerbs(Factory.ClassID, enumOleVerb); end; function TWebPrint.Update: HResult; begin Result := S_OK; end; function TWebPrint.IsUpToDate: HResult; begin Result := S_OK; end; function TWebPrint.GetUserClassID(out clsid: TCLSID): HResult; begin clsid := Factory.ClassID; Result := S_OK; end; function TWebPrint.GetUserType(dwFormOfType: Longint; out pszUserType: POleStr): HResult; begin Result := OleRegGetUserType(Factory.ClassID, dwFormOfType, pszUserType); end; function TWebPrint.SetExtent(dwDrawAspect: Longint; const size: TPoint): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.GetExtent(dwDrawAspect: Longint; out size: TPoint): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.Advise(const advSink: IAdviseSink; out dwConnection: Longint): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.Unadvise(dwConnection: Longint): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.EnumAdvise(out enumAdvise: IEnumStatData): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.GetMiscStatus(dwAspect: Longint; out dwStatus: Longint): HResult; begin Result := E_NOTIMPL; end; function TWebPrint.SetColorScheme(const logpal: TLogPalette): HResult; begin Result := E_NOTIMPL; end; {ITWebPrint} procedure TWebPrint.exeWB(cmdID:TOleEnum);
var
  spDoc:IHTMLDocument2;
spContainer:IOleContainer;
  spIE:IWebBrowser2;
begin
  FOleClientSite.GetContainer(spContainer);
if not Assigned(spContainer) then
begin
    messagebox(,'此对象必须作为OLE对象使用','使用方法错误',);
    exit;
end;
if spContainer.QueryInterface(IID_IHTMLDocument2,spDoc)=S_OK then
 begin
if (spDoc.parentWindow as IServiceprovider).QueryService(IWebbrowserApp, IWebBrowser2, spIE)=S_OK then
   begin
   if spIE.QueryStatusWB(cmdID)= then
spIE.ExecWB(cmdID, OLECMDEXECOPT_DODEFAULT,EmptyParam,EmptyParam);
  end
      else
begin
messagebox(,'请使用IE5.5以上版本','运行环境不正确',);
exit;
end;
end
else
begin
messagebox(,'找不到网页内容','使用方法错误',);
  exit;
end; end;
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