UsbControlRecipient enumeration
Defines constants that indicate the recipient of a USB control transfer. The recipient is defined in the setup packet of the control request. See Table 9.2 of section 9.3 of the Universal Serial Bus (USB) specification (www.usb.org).
Syntax
public enum class UsbControlRecipient
Attributes
- [Version(0x06030000)]
Members
The UsbControlRecipient enumeration has these members.
| Member | Value | Description |
|---|---|---|
| Device | device | 0 |
The recipient of the control transfer is the device. |
| SpecifiedInterface | specifiedInterface | 1 |
The recipient of the control transfer is the USB interface that is specified in the request. |
| Endpoint | endpoint | 2 |
The recipient of the control transfer is an endpoint. |
| Other | other | 3 |
The recipient of the control transfer is other. |
| DefaultInterface | defaultInterface | 4 |
The recipient of the control transfer is the default (or the first) USB interface in the selected configuration of the device. If the recipient is the first interface of the active configuration (DefaultInterface), SendControlInTransferAsync and SendControlOutTransferAsync methods overwrite the low byte of UsbSetupPacket.Index with the interface number of the default interface. By using this value, an app can omit the interface number in an interface-recipient request. |
Remarks
For conceptual information about USB control transfers, see "About the default endpoint" and "Layout of a control transfer" in How to send a USB control transfer.
Requirements
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Minimum supported client | Windows 8.1 |
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Minimum supported server | Windows Server 2012 R2 |
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