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answers:

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Im using the CompactFramework 3.5 on a WindowsCE 5.0 device to build an application that should use active sync's connection to get some data.

How can i detect if the mobile device is in the cradle and has an active connection? Is there some kind of PInvoke call for this?

+2  A: 

Depends on which side you want to detect the connection. For the desktop side, there are some ActiveSync events you can hook into. The free, open source Desktop Communication library can get you those.

For the device there are a few ways. For WinMo, it's easy - you can use the state and notification broker by tapping in via the Microsoft.WindowsMobile.Status class.

For generic CE devices, you can P/Invoke the CeRunAppAtEvent (which can set an event, not just run an app) with the NOTIFICATION_EVENT_RS232_DETECTED flag. These APIs are also wrapped in OpenNETCF's Smart Device Framework, specifically in the DeviceManagement.SerialDeviceDetected event

ctacke
A: 

Nice one! May have to try this.

-- Lee