Delphi中根据名称的字符串值去调用函数

时间：2011/9/3 15:31:50 点击：

　　核心提示：type TForm1 = class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject) ; procedure Cal...

type
   TForm1 = class(TForm)
     Button1: TButton;
     procedure Button1Click(Sender: TObject) ;
     procedure CallMeByName(Sender: TObject) ;
   private
     procedure ExecMethod(OnObject: TObject; MethodName: string) ;
   end;

var
Form1: TForm1;

type
TExec = procedure of object;

procedure TForm1.ExecMethod(OnObject: TObject; MethodName: string) ;
var
   Routine: TMethod;
   Exec: TExec;
begin
   Routine.Data := Pointer(OnObject) ;
   Routine.Code := OnObject.MethodAddress(MethodName) ;
   if NOT Assigned(Routine.Code) then Exit;
   Exec := TExec(Routine) ;
   Exec;
end;

procedure TForm1.CallMeByName(Sender: TObject) ;
begin
ShowMessage('Hello Delphi!') ;
end;

procedure TForm1.Button1Click(Sender: TObject) ;
begin
ExecMethod(Form1, 'CallMeByName') ;
end;