delphi调用c++ builder 5.0 制作的dll(100分)

我调用dll,其中Integral;Spectrum;在dll 中返回类型被声明为void类型．我作的声明如下:
unit usbdll;

interface
　function Integral(iTime:integer):void; stdcall;
function Spectrum(var data:integer):void; stdcall;

implementation
function Integral;external 'Cont375.dll' name 'Integral';
function Spectrum;external 'Cont375.dll' name 'Spectrum';

end.

编译时提示：＇Undeclared identifier 'void'＇

顶

unit usbdll;

interface
　procedure Integral(iTime:integer); stdcall;
　procedure Spectrum(var data:integer); stdcall;

implementation
　procedure Integral;external 'Cont375.dll' name 'Integral';
　procedure Spectrum;external 'Cont375.dll' name 'Spectrum';

end.