如何在注册表中设置一个值？

[jun]

我想在software下建一个\mykey\Interface项，然后在其中加上值:IP 1.1.1.1,port 8080,我象下面这么写，但是有些参数不知道该怎么处理，总是Fail to create key,
着一步完了以后，下一步又该怎么做？

HKEY hKey;
PHKEY phkResult;
LPCTSTR SubKey = "\\Software\\myKey\\Interface\\";
LPTSTR regClass = "REG_SZ"; ?应该如何设置
if (RegCreateKeyEx(HKEY_LOCAL_MACHINE,SubKey,0,regClass,REG_OPTION_NON_VOLATILE,KEY_ALL_ACCESS,NULL,phkResult,(LPDWORD)REG_CREATED_NEW_KEY) != ERROR_SUCCESS)
{
AfxMessageBox("Failed to create key!");
}

[jun]

谢谢指教，我还要将Port这个UINT写到注册表中应该怎么写？我写的不行。

UINT PortValue;
UINT m_Port=80;
lpName = "Port";
PortValue= m_Port;
RegSetValueEx(hKey,lpName,0,REG_DWORD,(CONST BYTE *)PortValue,sizeof(UINT));
RegCloseKey(hKey);

[bzjbest]

HKEY hKey;
unsigned long ulIP;
if(RegCreateKey(HKEY_CURRENT_USER, "Software\\Max Studio\\Chat", &hKey)==ERROR_SUCCESS)
{
RegSetValueEx(hKey, "m_strYourName", 0, REG_SZ, (BYTE*)(LPCTSTR)m_strYourName, m_strYourName.GetLength());
RegSetValueEx(hKey, "m_nPort", 0, REG_DWORD, (BYTE*)&m_nPort, sizeof(int));

ulIP = b1<<24 | b2<<16 | b3<<8 | b4;
RegSetValueEx(hKey, "ipDestination", 0, REG_DWORD, (BYTE*)&ulIP, sizeof(DWORD));
}

[jun]

我写进去了，注册表里的值也是对的，但是对于REG_DWORD的值我读出来却不对，请问为什么？我是这么读的：

//hKey已经获得
lpName = "Port";
lpType = REG_DWORD;
lpLen = sizeof(DWORD);
BYTE PortValue;
if (RegQueryValueEx(hKey,lpName,NULL,&lpType,&PortValue,&lpLen) != ERROR_SUCCESS)
{
return;
}
m_Port = (UINT)PortValue;
注册表中Port的值是333，但是PortValue的值却是：77'M',转换后的m_Port值是77,
请问为何？

[innerboy]

请看如下程序段,会又帮助的
BOOL W95StartService( DWORD dwType )
{
// Local Variables
TCHAR lpszBuff[256];
LPTSTR lpszStr = lpszBuff +128;
LPTSTR lpszName = lpszBuff;
//HANDLE hKey = NULL;
struct HKEY__ * hKey = NULL;
DWORD dwStrCb = 0;
DWORD dwValueType = 0;

// Get service name currently
lpszName = GetCommandLine();
for( int i = strlen(lpszName)-1; i>=0; i-- )
// for( int i = _tcslen(lpszName)-1; i>=0; i-- )
{
if( ( lpszName[i] != '"' )&&( lpszName[i]!=' ') )
break;
else if( lpszName[i] == '"' )
lpszName[i] = '\0';
}
if( lpszName[0] == '"' )
lpszName = lpszName +1;

// Registe as start up service
if( RegOpenKeyEx (HKEY_LOCAL_MACHINE,
TEXT( "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\RunServices"),
0,
KEY_QUERY_VALUE | KEY_SET_VALUE,
&hKey ) != ERROR_SUCCESS )
{
if( RegCreateKey( HKEY_LOCAL_MACHINE,
TEXT( "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\RunServices"),
&hKey ) != ERROR_SUCCESS )
{
//DebugOut( "RegCreateKey() error!");
return FALSE;
}
}

dwValueType = REG_SZ;
dwStrCb = 128;

// Take value
if( RegQueryValueEx(hKey,
SERVICE_NAME,
0,
&dwValueType,
(LPBYTE)lpszStr,
&dwStrCb ) == ERROR_SUCCESS )

{
// Find this key value
if( strcmp( lpszStr, lpszName )==0 )
//if( _tcscmp( lpszStr, lpszName )==0 )
{
// Remove the service
if( dwType == RSP_UNREGISTER_SERVICE )
{
if( RegDeleteValue( hKey, SERVICE_NAME ) == ERROR_SUCCESS )
{
RegCloseKey ( hKey );
return TRUE;
}
RegCloseKey( hKey );
return FALSE;
}
// Already exist service
if( dwType == RSP_SIMPLE_SERVICE )
{
//DebugOut("Already registed!");
RegCloseKey( hKey );
return TRUE;
}
}
// Not find it
} // No this value

// Unregiste return
if( dwType == RSP_UNREGISTER_SERVICE )
{
RegCloseKey( hKey );
return TRUE;
}

// No this value then create it
if( dwType == RSP_SIMPLE_SERVICE )
{
dwStrCb = 128;

// Set value
if( RegSetValueEx(hKey,
SERVICE_NAME,
0,
REG_SZ,
(CONST BYTE *)lpszName,
dwStrCb ) != ERROR_SUCCESS )
{
//DebugOut("RegSetValueEx() error!");
RegCloseKey( hKey );

return FALSE;
}
RegCloseKey( hKey );
return TRUE;
}

// Unknow type
RegCloseKey( hKey );
return FALSE;
}

[PatrickGamp]

HKEY hKey;
LPCTSTR lpTitle="Software\\mykey\\Interface";
LPTSTR lpClassName="fkjg";//any
LPCTSTR lpName="IP";
LPTSTR lpValue="1,1,1,1,port 8080";
DWORD dwResult;

CreateKeyEx(HKEY_LOCAL_MACHINE,lpTitle,0,lpClassName,REG_OPTION_NON_VOLATILE,KEY_ALL_ACCESS,NULL,&hKey,&dwResult);
SetValueKeyEx(hKey,lpName,0,REG_SZ,(CONST BYTE *)lpValue,strlen(lpValue)+1);
RegCloseKey();