請問一下，我在一個form寫了一個function，如果我要在另一個Form呼叫它，要怎麼呼叫呢？ 志陽

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志陽

您好:

Form2:    type
  TForm2 = class(TForm)
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
   function myfunc():string;//定義在這裡
  end;    Form1:    uses form2//把form2 use 進來
procedure TForm1.Button1Click(Sender: TObject);
begin
from2.myfunc();//呼叫您定義在form2的函數
end;

發表人 - supman 於 2005/05/17 17:15:15

procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } Function insertAdmin(account : String ; pass:String):String; end; 我如此的寫法了~但出現了以下的訊息 Error] USelect_Main.pas(45): Unsatisfied forward or external declaration: 'TFSelect_Main.insertAdmin' [Fatal Error] Admin.dpr(26): Could not compile used unit 'USelect_Main.pas' 想請問為什麼呢？謝謝 志陽

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志陽

我也在Function下面加過，begin和end;但還是一樣會錯耶！

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志陽

您好: 請在您的function前面加上您form的名稱,例如下面這樣,因為他是form的method    Function TUSelect_Main.insertAdmin(account : String ; pass:String):String;    範例:

unit Unit1;    interface    uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;    type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;    var
  Form1: TForm1;    implementation    uses unit2;    {$R *.dfm}    procedure TForm1.Button1Click(Sender: TObject);
begin
form2.fun();
end;    end.    ========================================================
unit Unit2;    interface    uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;    type
  TForm2 = class(TForm)
  private
    { Private declarations }
  public
    procedure fun();
  end;    var
  Form2: TForm2;    implementation    {$R *.dfm}    procedure tform2.fun();
begin
showmessage('adf');
end;    end.