subject_14535.htm

一些关于vc的问答

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序号：14535 发表者：jack 发表日期：2002-09-08 20:45:53
<br>主题：注册表怎么读写？
<br>内容：我成功地创建了一个子项，可是想再读写下面的数据时，却怎么也得不到ERROR_SUCCESS的返回值，请问LONG RegSetValueEx()函数倒底该怎么用？能给个具体的例子吗？看MSDN看得我一头雾水。<BR>
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<font color=red>答案被接受</font><br>回复者：fool 回复日期：2002-09-08 21:50:23
<br>内容：我取了一段我的代码，你可以看看<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;HKEY hKey;<BR>&nbsp;&nbsp;&nbsp;&nbsp;char sReg[1024];<BR>&nbsp;&nbsp;&nbsp;&nbsp;ConfigInfo m_ci;//自定义的信息结构<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;sprintf( sReg, "SOFTWARE\\yourname\\%s", sKeyName, id );<BR><BR>//打开不成功就 创建<BR>&nbsp;&nbsp;&nbsp;&nbsp;if( ERROR_SUCCESS == RegOpenKey( HKEY_LOCAL_MACHINE, sReg, &hKey ) ||<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ERROR_SUCCESS == RegCreateKey( HKEY_LOCAL_MACHINE, sReg, &hKey ) )<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DWORD dwKeyType, dwKeySize;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//取数据<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if( bGet )<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dwKeyType = REG_BINARY, dwKeySize = sizeof(ConfigInfo);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bRet = ( RegQueryValueEx( hKey, "BIN_CFG", 0, &dwKeyType, (LPBYTE)&m_ci, &dwKeySize )==ERROR_SUCCESS );<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//些数据<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;else<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bRet = ( RegSetValueEx( hKey, "BIN_CFG", 0, REG_BINARY, (LPBYTE)&m_ci, sizeof(ConfigInfo) )==ERROR_SUCCESS );<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RegCloseKey( hKey );<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR> <BR><BR>如果是 LONG, 则把REG_BINARY改成REG_DWORD<BR>
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回复者：跳动的心 回复日期：2002-09-09 10:29:15
<br>内容：SetRegDWORD(HKEY_LOCAL_MACHINE,Key_Name,m_ValueName,m_value);<BR>直接调用这个函数吧<BR>BOOL SetRegDWORD(HKEY hKey,LPCTSTR lpSubKey,LPCTSTR lpValueName,DWORD dwValue)<BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;HKEY h;<BR>&nbsp;&nbsp;&nbsp;&nbsp;if(RegCreateKey(hKey,lpSubKey,&h)==ERROR_SUCCESS)<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;LONG lRet=RegSetValueEx(h,lpValueName,NULL,REG_DWORD,(CONST BYTE*)&dwValue,sizeof(dwValue));<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RegCloseKey(h);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return (lRet==ERROR_SUCCESS);<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;else<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return FALSE;<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>}
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