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| /////////////////////////////////////////////////////////////////////////////
// My access to the registry
// Write a string
bool CApp::SetRegString(CString path,CString field,CString Val)
{
HKEY subKey;
int err;
if(err=::RegOpenKeyEx(HKEY_CURRENT_USER,(LPCTSTR)path,0,KEY_WRITE,&subKey))
{
RegistryAccessError(err);
return false;
}
if(err=::RegSetValueEx(subKey,field,0,REG_SZ,(const unsigned char *)(LPCTSTR)Val,(Val.GetLength()+1)*sizeof(TCHAR)))
{
RegistryAccessError(err);
return false;
}
if(err=::RegCloseKey(subKey))
{
RegistryAccessError(err);
return false;
}
return true;
}
// Write an Integer
bool CApp::SetRegInt(CString path,CString field,int Val)
{
HKEY subKey;
int err;
if(err=::RegOpenKeyEx(HKEY_CURRENT_USER,(LPCTSTR)path,0,KEY_WRITE,&subKey))
{
RegistryAccessError(err);
return false;
}
if(err=::RegSetValueEx(subKey,field,0,REG_DWORD,(const unsigned char *)&Val,sizeof(REG_DWORD)))
{
RegistryAccessError(err);
return false;
}
if(err=::RegCloseKey(subKey))
{
RegistryAccessError(err);
return false;
}
return true;
}
// Read a string
CString CApp::GetRegString(CString path,CString field,CString defVal)
{
HKEY subKey;
TCHAR data[256];
DWORD Size=sizeof(data);
memset(data,0,Size/sizeof(TCHAR));
int err;
if(err=::RegOpenKeyEx(HKEY_CURRENT_USER,(LPCTSTR)path,0,KEY_READ,&subKey))
{
RegistryAccessError(err);
return defVal;
}
if(err=::RegQueryValueEx(subKey,field,0,NULL,(unsigned char *)data,&Size))
{
RegistryAccessError(err);
return defVal;
}
if(err=::RegCloseKey(subKey))
{
RegistryAccessError(err);
return defVal;
}
return data;
}
// Read an Integer
int CApp::GetRegInt(CString path,CString field,int defVal)
{
HKEY subKey;
TCHAR data[256];
DWORD Size=sizeof(data);
memset(data,0,Size);
int err;
if(err=::RegOpenKeyEx(HKEY_CURRENT_USER,(LPCTSTR)path,0,KEY_READ,&subKey))
{
RegistryAccessError(err);
return (defVal);
}
if(err=::RegQueryValueEx(subKey,field,0,NULL,(unsigned char *)data,&Size))
{
RegistryAccessError(err);
return (defVal);
}
if(err=::RegCloseKey(subKey))
{
RegistryAccessError(err);
return (defVal);
}
return (*(int*)data);
}
void CApp::RegistryAccessError(int err)
{
// To Display a error message
LPVOID lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL
);
// Process any inserts in lpMsgBuf.
// ...
// Display the string.
MessageBox( NULL, (LPCTSTR)lpMsgBuf, _T("Error"), MB_OK | MB_ICONINFORMATION );
// Free the buffer.
LocalFree( lpMsgBuf );
} |
