Detect Active Sync connection on WM 5 devices

[Raul Tinca]

On 2005 devices the RAS API doesn't help too much... but there is a key in the registry that is updated by the OS in case if an AS connection:

Registry key:
HKEY_LOCAL_MACHINE \ System\State\Hardware key:Cradled

Here is a short code to help you read this key programatically:

bool bisActiveSyncConnected()
{
HKEY hKey;
DWORD dwTip, dwPos;
DWORD dwsize = sizeof(DWORD);
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("System\\State\\Hardware"), 0, 0, &hKey) == ERROR_SUCCESS)
{
if (RegQueryValueEx(hKey, _T("Cradled"), 0, &dwTip, (LPBYTE)&dwPos, &dwsize)==ERROR_SUCCESS)
{
RegCloseKey(hKey);
return (dwPos>0);
}
else return 0;
}
return 0;
}

You can also register for notifications related to changes on this key value.

[dr.ppc]

Hi,

What do you mean "You can also register for notifications related to changes on this key value. "

Could you please point me how to to that? You mean to automatically monitor the change of registry (key value)?

Thanks & best wishes,

dr.ppc

[Raul Tinca]

The following table shows the registry notification functions with a description of the purpose of each.

CeFindCloseRegChange This function stops change notification handle monitoring.
CeFindFirstRegChange This function creates a change notification handle and sets up initial change notification filter conditions. A wait on a notification handle succeeds when a change matching the filter conditions occurs in the specified registry key, or subkeys.
CeFindNextRegChange This function requests that the operating system signal a change notification handle the next time it detects an appropriate change.

Cheers,
Raul