Remote Registrys

[wierdbeard65]

Hi,

I'm develping in Code::Blocks and wxWidgets (if that matters!)

What I want to know is, how can I read values from another machine's registry (I'm logged on as a domain user which is a member of the local admins on the machine in question).

I don't (at this stage anyway!) want to make any changes.

Ideas, anyone?

Grateful thanks for reading this and (hopefully) responding.

Paul

[BobS0327]

Example of reading registry string (REG_SZ)

#pragma comment( lib, "advapi32.lib" )
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>

BOOL ReadRegistryString(HKEY hKey, LPCTSTR szValueName, LPTSTR * lpszReturnValue)
{
	DWORD dwType = 0, dwDataSize = 0, dwBufferSize = 0;
	if(RegQueryValueEx(hKey, szValueName, 0, &dwType, NULL, &dwDataSize ) != ERROR_SUCCESS) return  FALSE;
	else if (dwType != REG_SZ) return FALSE;
	dwBufferSize = dwDataSize + (1 * sizeof(CHAR));
	if((*lpszReturnValue = (LPTSTR) malloc(dwBufferSize)) == NULL)
		return FALSE;
	if( RegQueryValueEx(hKey, szValueName, 0, &dwType, (LPBYTE) *lpszReturnValue, &dwDataSize ) != ERROR_SUCCESS)
	{ 
		free(*lpszReturnValue);
		return FALSE;
	}
	else if (dwType != REG_SZ)
	{
		free(*lpszReturnValue);
		return FALSE;
	}
	(*lpszReturnValue)[(dwBufferSize / sizeof(CHAR)) - 1] = '\0';
	return TRUE;
}

INT main(void)
{
	HKEY hKey = NULL;
	HKEY hKeyRemote = NULL;
	LPTSTR szReturnValue;
	CHAR szComputerName[] = {"\\\\myPC"};

	if(RegConnectRegistry(szComputerName, HKEY_LOCAL_MACHINE, &hKeyRemote) == ERROR_SUCCESS)
	{
		if(RegOpenKeyEx(hKeyRemote, "SOFTWARE\\Microsoft\\Windows\\CurrentVersion", 0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
		{
			if( ReadRegistryString(hKey,"ProgramFilesDir", &szReturnValue) == TRUE)
			{
				printf("The returned value is %s\n", szReturnValue);
				RegCloseKey(hKey); 
			}
			else printf("ReadRegistryString failed\n");
		}
		RegCloseKey(hKeyRemote); 
	}
	else printf("RegConnectRegistry failed\n");
	return 0;
}

[wierdbeard65]

Many thanks :-)