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  • Blog Post: Cancellation Behavior of MTP USB Devices

    The MTP Specification contains this definition of the CancelTransaction Event: G.2.2 CancelTransaction Event Code: 0x4001 Parameter 1: None Parameter 2: None Parameter 3: None This event is used to initiate the cancellation of a transaction over transports which do not have their own mechanism...
  • Blog Post: WIA Camera Support in Windows Vista (Part 2 of 2)

    In the previous post , we gave an overview of the WIA-WPD Compatibility Layer and how WIA Applications can register for WIA_EVENT_DEVICE_CONNECTED events. In this post, we will cover a more advanced topic: customization for PTP and MTP devices. The WIA-WPD Compatibility Layer supports basic extensibility...
  • Blog Post: WIA Camera Support in Windows Vista (Part 1 of 2)

    In this two-part post, we will cover WIA support for cameras on Windows Vista, and the migration from WIA to WPD for richer applications. WIA-WPD Compatibility Layer On Windows XP, Picture Transfer Protocol (PTP) cameras are accessible through the WIndows Image Acquisition (WIA) infrastructure...
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