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如果安装了给定程序ID的程序并在系统中注册,则以下代码将返回True;否则,则返回False。
uses System.Win.ComObj,ActiveX;
{ Access.ApplicationExcel.ApplicationFrontPage.ApplicationOutlook.ApplicationPowerPoint.ApplicationMSProject.ApplicationWord.Application//delphitop.com}
function ProgIDInstalled(const PID: string): Boolean;var WPID: WideString; // PID as wide string Dummy: TGUID; // unused out value from CLSIDFromProgID functionbegin WPID := PID; Result := ActiveX.Succeeded(ActiveX.CLSIDFromProgID(PWideChar(WPID), Dummy) );end;
function IsIEInstalled: Boolean;begin Result := ProgIDInstalled('FrontPage.Application');end;
procedure TForm2.Button1Click(Sender: TObject);beginif IsIEInstalled thenbegin memo1.Lines.Add('FrontPage已安装'); end else begin memo1.Lines.Add('FrontPage没安装');end;end;
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