如何从另一个单元运行程序? [英] How to run procedure from another unit?

问题描述

这样的n00b问题，但我仍然无法弄清楚.我的单元main中包含过程Discard().现在，我有另一个单元engine，我想从中运行单元main的过程Discard().我在engine.pas的uses部分有主菜单.我试图用main.Discard()调用过程，但是效果不好.我在做什么错了?

Well this kind of n00b question but I still can't figure it out. I have unit main with procedure Discard() in it. Now I have another unit engine and I want to run from it procedure Discard() of unit main. I have main in uses section of engine.pas. I tried to call procedure with main.Discard() but no good. What am I doing wrong?

推荐答案

您需要将过程的签名放在界面中，如下所示:

You need to put the procedure's signature in your interface, like so:

unit main;

interface

procedure Discard();

implementation

procedure Discard();
begin
//do whatever
end;

其他单元只能查看"界面部分列出的内容.

Other units can only "see" whatever's listed in the interface section.

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