IOCTL_EMI_GET_METADATA_SIZE IOCTL (emi.h)
The IOCTL_EMI_GET_METADATA_SIZE control code retrieves the size of the EMI metadata object that can be obtained from the device by issuing an IOCTL_EMI_GET_METADATA request. This should be requested before IOCTL_EMI_GET_METADATA as the size will be vary based on the driver implementation.
Input buffer
None.
Input buffer length
None.
Output buffer
The AssociatedIrp.SystemBuffer member specifies the address of a caller-allocated buffer that contains a EMI_METADATA_SIZE structure. On output, this structure holds the size of EMI metadata
Output buffer length
The size of this buffer is specified in the Parameters.DeviceIoControl.OutputBufferLength member.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 10. |
| Header | emi.h (include Emi.h) |