调用DLL文件中的FORM

　　作者：e梦缘

　　好久发表文章了！！！

　　调用DLL文件中的FORM,具体实现过程如下：
　　

library Project1;uses  SysUtils,   Classes,Forms,windows,dialogs,  Unit1 in 'Unit1.pas' {Form1};{$R *.res}function showform(formname:string):boolean;stdcall;var  TheClass: TPersistentClass;  aForm: TForm;begin result:=false; {如果您的Dll中有很多FORM，请在这儿注册哦 RegisterClasses([TForm1,TForm2,TForm3,...]); } RegisterClasses([TForm1]); TheClass := GetClass('T' + FormName); if (TheClass = nil) then   exit; if TheClass.InheritsFrom(TForm)  then beginaForm := Tform(TheClass.Create).Create(nil);try  aForm.ShowModal;  result:=true;finally  FreeAndNil(aForm);end; end;end;exportsshowform;beginend.

....procedure  RunDllForm(const DllFileName,DllFormName:String;const methodName:string);typeTRunForm=function(formname:string):boolean;stdcall;var  RunForm: TRunForm;  GetDllHWND: HWND;begin  GetDllHWND := LoadLibrary(PChar(DllFileName));  tryif GetDllHWND  32 thenbegin  MessageBox(0, Pchar('没有找到'+DllFileName+'DLL文件！'),'加载DLL失败', MB_OK);  Exit;end;@RunForm := GetProcAddress(GetDllHWND,pchar(methodName));if @RunForm  nil then   try RunForm(DllFormName);   except raise Exception.Create('对不起,找不到T' + DllFormName+ '窗体！');   end else raise Exception.Create('无效的方法名调用');  finallyFreeLibrary(GetDllHWND);  end;end;procedure TForm1.Button1Click(Sender: TObject);beginRunDllForm('project1.dll','form1','showform');end;....