FIELD_OFFSET macro (wdm.h)
The FIELD_OFFSET macro returns the byte offset of a named field in a known structure type.
Syntax
void FIELD_OFFSET(
[in] type,
[in] field
);
Parameters
[in] type
Specifies the name of a known structure type containing Field.
[in] field
Specifies the name of a field in a structure of type Type.
Return value
None
Remarks
Used by device driver writers to symbolically determine the offset of a known field in a known structure type.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Desktop |
| Header | wdm.h (include Wdm.h, Ntddk.h, Miniport.h, Minitape.h, Scsi.h, Storport.h) |
| IRQL | Any level |