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Below is an example of a provisioning XML document that may be passed to the ProvisioningAgent.provisionFromXmlDocumentAsync method. The following fields need to be customized at the least - Issuer and Subscriber. The value for the Subscriber node must...

There isn’t an easy way to set the category of an Unidentified network in Windows 7 RC+ builds. By default, an Unidentified network will be set to Public for security. Often, the Unidentified network is setup intentionally (e.g. two machines connected...

The header file - Wpdmtpextensions.h - has been referenced in several of my posts and is needed to talk MTP to the device through WPD. The header file is not available in the Vista SDK/WDK or the WMP 11 SDK, but is planned for inclusion in the Windows...

This is a C# follow-up post on the earlier C++ playlist creation post . Be sure to read the earlier post for background information on playlists and how it stores references. We will also re-use the StringToPropVariant helper function that we defined...

Previous posts have covered how to create, manage and marshal PROPVARIANTs using interop. Here's a way on how to create a PROPVARIANT without interop. The IPortableDeviceValues interface exposes a SetStringValue method that allows a regular C# string...

This is the C# equivalent of an earlier C++ post on connecting to a WPD device. We'll concentrate on the implementation here - you may refer back to that earlier post for further explanation. // Create our client information collection PortableDeviceApiLib...

This post is a continuation of the one covering WPD property retrieval in C# . That post explained how to marshal strings and the basic int properties. Handling other types such as VT_DATE and VT_BOOL is trickier so I'll try to cover them here. VT_DATE...

WPD content enumeration in C# is pretty close to the C++ style. Here's a basic example that enumerates the object IDs of the objects present on the device. static void Enumerate( ref PortableDeviceApiLib.IPortableDeviceContent pContent, string parentID...

Since setting a WPD property requires manipulating a PROPVARIANT structure through interop, we must make use of the marshalling rules we set in our last post . We'll take a look at a function that allows string properties to be set. static void SetStringValue...

WPD property values are retrieved as PROPVARIANTs through the WPD API. Unfortunately there is no native support for PROPVARIANTs in C#. To correctly retrieve the property values (or anything that is in a PROPVARIANT) through the WPD API in C#, we must...

If you followed the exercise from our first C# post , you must have noticed that the PortableDeviceApi and PortableDeviceTypes typelibs don't expose the WPD property keys such as WPD_OBJECT_ID, WPD_OBJECT_FORMAT, etc. This can be a major blocker since...

I just bought a Wii and it has totally changed my gamer attitude, and I wasn't even a gamer to start with. No more button mashing anymore - arm-swinging and flailing with some actual hand-eye coordination is what it's all about. Of course with all the...

Let's take a look at how we can enumerate WPD devices in C#. This post assumes that you already have a project set up using these instructions . (Update: You will also need to follow the disassembly/reassembly instructions below for this to work correctly...

There currently is no managed/C# flavor of the WPD API. This, of course, doesn't mean that you are locked out from using the WPD API if you want to use C#. Since the API is a set of COM interfaces, we simply have to interop across from C#. Granted it...

If you notice your API calls are randomly failing with HRESULT_FROM_WIN32(ERROR_BUSY) / 0x800700AA / -2147024726, then it's likely that the device driver is indeed busy doing something else. It could be that WMP is syncing content to the device, or maybe...

A playlist (.WPL, .M3U, etc.) is a text file which contains a list of filenames. This list is the "playlist". So transferring the playlist should be easy right? Well, yes it is - if you just want to transfer it as a text file... However if you want...

The list of supported WPD formats is available in MSDN here . But what if your MTP device supports a brand new format that isn't in the supported list? WPD does allow a way to reference custom/vendor extended formats. If you take a closer look at the...

MTP allows for a wide range of array-based data types ranging from an array of bytes (AINT8/AUINT8) to an array of GUIDs (AINT128/AUINT128). Check out section 3.2.1 and 3.2.2 in the MTP specification for a complete list and definition. Unfortunately...

Apart from the standard device and object properties defined in the MTP specification, device vendors are free to add their own properties. The codes for these properties must lie in the vendor-extension range as defined by the MTP spec in section 3.3...

The IPortableDeviceProperties::SetValues API can be used to set WPD object properties. The documentation covers the API parameters as well, so we'll skip to the meatier sample. The SetValues API can be used to set multiple properties at the same time...

We'll create a little helper function that we can use to figure out if a WPD object property can be modified. All WPD object properties have attributes on them. The MSDN documentation provides a complete list of attributes here . We'll take a look at...

Let's use the GetDevicePropValue command (MTP spec - section D.2.21) to illustrate this. GetDevicePropValue takes one parameter - the device property code that we want to retrieve the current value for. We'll retrieve the BatteryLevel device property...

We'll pick the SetDevicePropValue MTP command (MTP spec - section D.2.22) to illustrate this example. This command requires the device property code as a parameter. We'll try setting the DateTime property (MTP spec - section C.2.18). The DateTime property...

One of the problems of living on the cutting edge is that it tends to make you bleed. I have a post-RC1 Vista build on my main desktop. And I was impressed by the fact that I hadn't required a single reboot in over three weeks. I worked yesterday on putting...

In some of our later examples, we'll have to send MTP strings to the device. MTP strings are defined in the MTP spec in section 3.2.3. Briefly, the first byte is the number of Unicode characters to follow (including the NULL terminator), the remaining...