我的学习生涯（Delphi篇） - 00

    写在开篇！

    很高兴在CSDN这个平台与广大的开发者交流心得。

    毕业后，一直在学习Delphi。说来也许可笑：上学时，Pascal考试不及格！所以，天天看看Pascal的书。

    04进了一家私企使用就是Delphi。使自己对在Windows平台使用Delphi进行C/S有了坚定的信心！

    直到现在，我还是认为在Windows平台最好的C/S开发工具非Delphi莫属！

------------------------------------以下版本仅供学习使用，请不要用于商业用途---------------------------------------------

Delphi 6: http://pan.baidu.com/s/1nurDnzr

Delphi 7: http://pan.baidu.com/s/1kTSEP8r

Delphi 7 update (for vista) 

    -------------------------------------------------------------------------------------------------美丽分割线---------------------------

    年代：2005

    文件：my0501.7z

    效果如下图：

    

    Unit1.pas

    

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    OpenDialog1: TOpenDialog;
    Panel1: TPanel;
    Panel2: TPanel;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

  filenames:string;

  function GetTextFromFile(AFile : String; var ReturnString : string) : boolean;

implementation

{$R *.dfm}



function GetTextFromFile(AFile : String; var ReturnString : string) : boolean;
var
FileStream : TFileStream;
begin
  result := false;
  if not fileexists(AFile) then exit;
  FileStream := TFileStream.Create(AFile,fmopenreadwrite);
  try
    if FileStream.Size > 0 then
    begin
      SetLength(ReturnString,FileStream.size);
      FileStream.Read(ReturnString[1],FileStream.Size);
      result := true;
    end
  finally
    FileStream.Free;
  end;

end;


procedure TForm1.Button1Click(Sender: TObject);
var
  s : string;
  buffer1:PChar;
begin

  try
    OpenDialog1.InitialDir:='d:\';
    OpenDialog1.Filter:='数据文件（*.xbf）| *.xbf';
    if OpenDialog1.Execute then
    begin
      filenames:=OpenDialog1.FileName;
    end;
  except

  end;


  if GetTextFromFile(filenames,s)  then
  begin
    // Label1.caption := s; or assign the text to a Label

     Memo1.text := s;
  end;
  
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  Application.Terminate;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Form1.Caption:='打开数据文件';
  form1.BorderStyle:=bsSingle;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
   Memo1.Lines.SaveToFile(filenames);
end;

procedure TForm1.Button4Click(Sender: TObject);
var
  sfi,si:integer;
  buff:array [0..4096] of byte;
  s:string;
begin
   try
    OpenDialog1.InitialDir:='d:\';
    OpenDialog1.Filter:='报文文件（*.rep）| *.rep';

    if OpenDialog1.Execute then
    begin
      filenames:=OpenDialog1.FileName;
    end;
  except

  end;
   //sfi:=FileOpen(filenames,fmOpenReadWrite);
   //if sfi=-1 then exit; //文件不存在
// FileSeek(sfi,where,0); // 指定要读位置,0:从文件头计起
   //si:=FileRead(sfi,buff,4096); //读入多少字节的数据
   //FileSeek(sfi,where,0); // 指定要写位置,0:从文件头计起,2:从文件尾倒数
   //filewrite(sfi,buff,4096);
   //FileClose(sfi);
   if GetTextFromFile(filenames,s)  then
  begin
    // Label1.caption := s; or assign the text to a Label

     Memo1.text := s;
  end;

end;

procedure TForm1.Button5Click(Sender: TObject);
var
  Buffer: PChar;
begin
  GetMem(Buffer,Length(Memo1.Text) + Length(Memo1.Text) + 1);
  StrCopy(Buffer, PChar(Memo1.Text));
  StrCat(Buffer, PChar(Memo1.Text));
  Memo1.Text := Buffer;
  FreeMem(Buffer);

end;

end.