利用Windows注册表存储信息
一、TRegIniFile方法：(特点：操作简单，可用于Win95/98 Window NT) 首先，在源文件(cpp)中加入 #include <vcl\registry.hpp> //for C++ Builder 3.0 __fastcall TForm1::TForm1(TComponent* Owner): TForm(Owner) { // 当Form1打开时，从注册表读入Left值 TRegIniFile *pIni = new TRegIniFile("SOFTWARE\\MyName\\MyProg"); Left = pIni->ReadInteger("Config","Left",200); delete pIni; } void __fastcall TForm1::FormClose(TObject *Sender,TCloseAction &Action) { // 当Form1关闭时，往注册表存放Left值 TRegIniFile *pIni = new TRegIniFile("SOFTWARE\\MyName\\MyProg"); pIni->WriteInteger("Config","Left",Left); delete pIni; } 注：在缺省状态下，信息存放HKEY_CURRENT_USER根目录下。实际上，它代替了Windows 3.1中的Ini文件.若存放在其它根目录下，可设置Registry->RootKey,例： Registry->RootKey ＝ HKEY_LOCAL_MACHINE; 除了可以存放整型值，还可以存放字符串值和布尔值。 二、如何操作注册表 #include <Registry.hpp> TRegIniFile *R=new TRegIniFile("SOFTWARE\\ahao's Softwares\\Wenku\\Config"); //读： Edit2->Text=R->ReadString("SMTP","Host",""); Edit3->Text=IntToStr(R->ReadInteger("SMTP","Port",25)); Edit4->Text=R->ReadString("SMTP","UserID",""); //写： R->WriteString("SMTP","Host",Edit2->Text); R->WriteInteger("SMTP","Port",StrToInt(Edit3->Text)); R->WriteString("SMTP","UserID",Edit4->Text); 别忘了 R->Free();