WinAPI: WritePrivateProfileString、GetPrivateProfileString - 简单读写 Ini 文件

尽管使用 TIniFile 类很方便, 但我觉得还是用系统 API 操作更顺手, 读写各只需要一行代码, 也不用 uses IniFiles.

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本例效果图:

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代码文件:

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unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls;



type

  TForm1 = class(TForm)

    Memo1: TMemo;

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



const

  FilePath = 'C:\Temp\My.ini';



//写入 Ini 文件, 如果指定文件路径不存在会自动建立

procedure TForm1.Button1Click(Sender: TObject);

begin

  WritePrivateProfileString('段1', 'Key1', '值1', PChar(FilePath));

  WritePrivateProfileString('段1', 'Key2', '值2', PChar(FilePath));



  WritePrivateProfileString('段2', 'Key1', '值1', PChar(FilePath));

end;



//把写入结果显示在 Memo 看看

procedure TForm1.Button2Click(Sender: TObject);

begin

  if not FileExists(FilePath) then Exit;

  Memo1.Lines.LoadFromFile(FilePath);

end;



//读取测试

procedure TForm1.Button3Click(Sender: TObject);

var

  buf: array[Byte] of Char; {准备接受缓冲区}

begin

  GetPrivateProfileString('段1', 'Key2', '默认值', buf, Length(buf), PChar(FilePath));

  ShowMessage(buf);

end;



end.


 
   

窗体文件:

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object Form1: TForm1

  Left = 0

  Top = 0

  Caption = 'Form1'

  ClientHeight = 148

  ClientWidth = 237

  Color = clBtnFace

  Font.Charset = DEFAULT_CHARSET

  Font.Color = clWindowText

  Font.Height = -11

  Font.Name = 'Tahoma'

  Font.Style = []

  OldCreateOrder = False

  Position = poDesktopCenter

  PixelsPerInch = 96

  TextHeight = 13

  object Button1: TButton

    Left = 127

    Top = 24

    Width = 98

    Height = 25

    Caption = #20889#20837' Ini '#25991#20214

    TabOrder = 0

    OnClick = Button1Click

  end

  object Button2: TButton

    Left = 127

    Top = 65

    Width = 98

    Height = 25

    Caption = #30475#30475#20889#20837#32467#26524

    TabOrder = 1

    OnClick = Button2Click

  end

  object Button3: TButton

    Left = 127

    Top = 104

    Width = 98

    Height = 25

    Caption = #35835#21462'  Ini '#25991#20214

    TabOrder = 2

    OnClick = Button3Click

  end

  object Memo1: TMemo

    Left = 0

    Top = 0

    Width = 121

    Height = 148

    Align = alLeft

    Lines.Strings = (

      'Memo1')

    TabOrder = 3

    ExplicitHeight = 183

  end

end


 
   

相关函数还有:

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WritePrivateProfileSection {}

WriteProfileSection        {}

WriteProfileString         {}

GetPrivateProfileInt       {}

GetPrivateProfileSection   {}

GetPrivateProfileStruct    {}

GetProfileInt              {}

GetProfileSection          {}

GetProfileString           {}