我是个新手哈,在看delphi7完美经典,不知道为什么照着书上的代码写的却运行不了。
就是用Unit1调用Unit2里面的procedure,一直提示我ShowMessage是一个未说明的标识符。代码如下:Unit1的代码:unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Unit2;type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
begin
Unit2.MyPro;
end;end.
Unit2的代码:unit Unit2;interfaceprocedure MyPro;implementationprocedure MyPro;
var
MyName:String;
begin
MyName:= '喂~我是林小拉!';
ShowMessage (MyName);
end;end.
请各位高手朋友帮帮忙哈,不胜感激。谢谢~~!!
就是用Unit1调用Unit2里面的procedure,一直提示我ShowMessage是一个未说明的标识符。代码如下:Unit1的代码:unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Unit2;type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
begin
Unit2.MyPro;
end;end.
Unit2的代码:unit Unit2;interfaceprocedure MyPro;implementationprocedure MyPro;
var
MyName:String;
begin
MyName:= '喂~我是林小拉!';
ShowMessage (MyName);
end;end.
请各位高手朋友帮帮忙哈,不胜感激。谢谢~~!!
begin
MyPro; //不能加Unit2
end;
你说的是这个吗?
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Unit2;这段 我在unit2加上后提示出错的位置就是uses这里了
begin
MyPro; //不能加Unit2
end;还有Unit2中,没有引用包含有“ShowMessage”函数的单元,可能是Windows, Messages, SysUtils中的一个。
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls,Unit2;type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
begin
MyPro;
end;end.//单元二代码。unit Unit2;interface
uses Dialogs;procedure MyPro;implementationprocedure MyPro;
var
MyName :string;
begin
MyName := '喂~我是林小拉!';
Showmessage(MyName);
end;end.
//以上代码通过。
procedure MyPro;implementationprocedure MyPro;
var
MyName:String;
begin
MyName:= '喂~我是林小拉!';
ShowMessage (MyName);
end;end.
var
MyName:String;
begin
MyName:= '喂~我是林小拉!';
ShowMessage (MyName);
end;end.
放在implementation下面也成功了,感觉好奇怪啊,感谢大家的帮忙,我新人,分数不多,我去看看怎么给分哈