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<html><head><script language="JavaScript"> function reset(){ for ( var i=0; i < document.Form1.elements.length; i++ ) { document.Form1.elements[i].options[0].selected=true }}function going(url){ parent.location=url; reset();}</script><style><!--A:link {text-decoration: none; color: #000000; font-family: 宋体}A:visited {text-decoration: none; color: #000000; font-family: 宋体}A:active {text-decoration: none; font-family: 宋体}A:hover {text-decoration: underline:#ffffff; color: #ff0000}body,table {font-size: 9pt; font-family: 宋体}.H1 {font-size: 9pt ; line-height:9pt; align=center}.ourfont {font-size: 9pt ; line-height:9pt; }.ourfont1 {font-size: 9pt ; line-height:9pt; }--></style><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><title>用C++Bulider在WIN.INI中保存信息</title></head><body topmargin="0" leftmargin="0"><div align="center"><center><table border="0" cellPadding="0" cellSpacing="0" width="700"><tbody> <tr> <td><p class="content4"><span class="font"><img border="0" 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href="../netuse/H00705-20.htm">网络应用</a></strong><br> <br> <strong><a style="color: rgb(255,255,255); text-decoration: none" href="../webpage/H00705-21.htm">网页制作</a></strong><br> <br> <strong><a style="color: rgb(255,255,255); text-decoration: none" href="../technic/H00706-3.htm">技术交流</a></strong></p> <div align="center"><center><table border="0" cellPadding="0" cellSpacing="0" width="100%"><tbody></tbody> </table> </center></div><table border="0" cellPadding="0" cellSpacing="0" width="100%"><tbody></tbody> </table> </td> <td align="middle" vAlign="top" width="20"><p align="left" class="content4"><span class="font"><span><br> </span></span></td> <td colSpan="2" vAlign="top" width="400"> <p> <font FACE="宋体" SIZE="2"></p> <p align="center">用C++Bulider在WIN.INI中保存信息</p> <p>(西安 崔战兵)</p> <p> 现在许多软件把程序中需要的数据保存在注册表中，这样当用户装的软件越来越多时，致使注册表越来越庞大，容易使系统出错。当然，微软也建议在注册表中保存数据，但当我们需要保存的数据不多时完全可以把数据保存在WIN.INI中，这样可以很方便地维护，实现方法相对来说比较简单。下面我以Borland C＋＋ Builder为例来说说如何实现。</p> <p> 原理其实很简单，只需调用API的 WriteProfileString和GetProfileInt函数就可以了。这两个函数的原型是：BOOL WriteProfileString(LPCTSTR lpAppName,LPCTSTR lpKeyName,LPCTSTR lpString );</p> <p> UINT GetProfileInt(LPCTSTR lpAppName,LPCTSTR lpKeyName,INT nDefault);</p> <p> 其中lpAppName指在WIN.INI中段的名字，即用[]括起来的字符串，lpKeyName指在这个段中每一个项目的名字，lpString指这个项目的值，即</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">=</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">后的数, nDefault为当GetProfileInt没有找到lpAppName和lpKeyName时返回的值，即缺省值,前者返回为布尔值(true 或 false)，后者返回为无符号整形值。当在WriteProfileString函数中 lpKeyName 为空(NULL)时，则清除这个段的全部内容，lpString 为空时，则清除这一项目的内容，即这一行将清除掉。</p> <p> 下面举一例子来说明这两个函数的用法。新建一个应用程序，在Form1上放两个Edit和三个Button，其中Edit的Text为空，三个Button的Caption分别为</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">添加</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">、</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">查看</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">、</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">清除</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">。双击</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">添加</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">按钮加入下面代码：</p> <p> WriteProfileString(</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">例子程序</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">，</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">项目</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">，Edit1→Text.c_str());</p> <p> 双击</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">查看</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">按钮加入如下代码：</p> <p> unsigned int Temp;</p> <p> Temp=GetProfileInt(</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">例子程序</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">，</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">项目</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">，100);</p> <p> Edit2→Text=IntToStr(Temp);</p> <p> 双击</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">清除</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">按钮加入如下代码：</p> <p> WriteProfileString(</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">例子程序</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">，NULL，NULL)；</p> <p> 然后按F9键运行程序。</p> <p> 下来可以检验一下程序的正确性。在Edit1中输入数字，如</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">3265</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">，按</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">添加</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">按钮，这时运行</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">sysedit</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">来查看</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">WIN.INI</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">文件的最后面，可以看到加入了如下内容：</p> <p> [例子程序]</p> <p> 项目=3265</p> <p> 其中</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">[]</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">和</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">=</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">是函数自动加上的。按下</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">查看</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">按钮，在Edit2中出现</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">3265</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">，当按下</font><font FACE="Times New Roman" SIZE="2">“</font><font FACE="宋体" SIZE="2">清除</font><font FACE="Times New Roman" SIZE="2">”</font><font FACE="宋体" SIZE="2">按钮可清除添加的部分。经过查看可知程序已达到预期的目的。</p> <p> 喜爱编程的朋友可以把上述方法应用到自己的程序中去，来达到保存数据信息的作用。当确实要把信息保存到注册表中，可以在C＋＋ Builder中定义一个TRegistry类的对象来进行相关的操作，或者直接调用Windows的API函数，具体如何编程大家可以参阅相关资料或者同我联系，我的E－mail: ⌨️ 快捷键说明
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