Form1 如何向Form2传递数据

痛定思痛。 2022-04-15 05:35 292阅读 0赞

1.  首先form1有一个全局变量或者函数是在public下
2.  然后form2的uses下引用form的单元名
3.  这个时候就可以了

1.设置框图

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjUyODA4OQ_size_16_color_FFFFFF_t_70][]

2.code

2.1 form1的代码：

unit Unit1;
    
    interface
    
    uses
      Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
      Dialogs, StdCtrls, Buttons, ComCtrls;
    
    type
      TForm1 = class(TForm)
        RichEdit1: TRichEdit;
        BitBtn1: TBitBtn;
        Edit1: TEdit;
        procedure BitBtn1Click(Sender: TObject);
      private
        { Private declarations }
      public
        { Public declarations }
    
      end;
    
    var
      Form1: TForm1;
      ss:String;//全局变量
    implementation
    
    uses Unit2;//定义了Form2的单元
    
    {$R *.dfm}
    
    procedure TForm1.BitBtn1Click(Sender: TObject);
    begin
        Form2.Show;
        ss:=RichEdit1.Text;//赋值
        Edit1.Text:=ss;
    end;
    
    end.

2.2 Form2的代码：

unit Unit2;
    
    interface
    
    uses
      Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
      Dialogs, StdCtrls, Buttons;
    
    type
      TForm2 = class(TForm)
        Edit1: TEdit;
        BitBtn1: TBitBtn;
        procedure BitBtn1Click(Sender: TObject);
      private
        { Private declarations }
      public
        { Public declarations }
      end;
    
    var
      Form2: TForm2;
    
    implementation
    uses Unit1;
    {$R *.dfm}
    
    procedure TForm2.BitBtn1Click(Sender: TObject);
    begin
           Edit1.Text:=ss;
    
    end;
    
    end.

3.运行结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjUyODA4OQ_size_16_color_FFFFFF_t_70 1][]

4.结论

完成了数据从Form1 到Form2的传递。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjUyODA4OQ_size_16_color_FFFFFF_t_70]: /images/20220415/b9cb3404c29d4a069232dd13a4416217.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjUyODA4OQ_size_16_color_FFFFFF_t_70 1]: /images/20220415/04cad2f1af744a5b96a792cfbffc3029.png