如何实现Delphi动态加载Dll窗体，接口实现消息通信(200分)

如何实现Delphi动态加载Dll窗体，子窗体和主窗体消息通信希望通过接口实现。

“子窗体和主窗体消息通信希望通过接口实现”不是很明白？

procedure CreateLogoForm(App: TApplication; Scr: TScreen);//(xx:Txx;yy;Tyy;自己设定的动态参数,)<br>begin<br>&nbsp; CoInitialize(nil); &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //由于使用ado,所以必须初始化ole<br>&nbsp; try<br>&nbsp; &nbsp; Application := App;<br>&nbsp; &nbsp; Screen := Scr;<br>&nbsp; &nbsp; FormLogo:=TFormLogo.Create(nil);<br>&nbsp; &nbsp; FormLogo.ShowModal;<br>&nbsp; finally<br>&nbsp; &nbsp; CoUninitialize;<br>&nbsp; end;<br>end;

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