RtlSetBits function (wdm.h)
The RtlSetBits routine sets all bits in a given range of a given bitmap variable.
NTSYSAPI VOID RtlSetBits(
[in] PRTL_BITMAP BitMapHeader,
[in] ULONG StartingIndex,
[in] ULONG NumberToSet
);
[in] BitMapHeader
A pointer to the RTL_BITMAP structure that describes the bitmap. This structure must have been initialized by the RtlInitializeBitMap routine.
[in] StartingIndex
Specifies the start of the bit range to be set. This is a zero-based value indicating the position of the first bit in the range.
[in] NumberToSet
Specifies how many bits to set.
None
RtlSetBits simply returns control if the input NumberToSet is zero. StartingIndex plus NumberToSet must be less than or equal to BitMapHeader->SizeOfBitMap.
Callers of RtlSetBits must be running at IRQL <= APC_LEVEL if the memory that contains the bitmap variable is pageable or the memory at BitMapHeader is pageable. Otherwise, RtlSetBits can be called at any IRQL.
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe (kernel mode); Ntdll.dll (user mode) |
| IRQL | <= APC_LEVEL (See Remarks section) |