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RtlSetBit function (wdm.h)

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The RtlSetBit routine sets the specified bit in a bitmap to one.

Syntax

NTSYSAPI VOID RtlSetBit(
  [in] PRTL_BITMAP BitMapHeader,
  [in] ULONG       BitNumber
);

Parameters

[in] BitMapHeader

Pointer to the RTL_BITMAP structure that describes the bitmap. This structure must have been initialized by the RtlInitializeBitMap routine.

[in] BitNumber

Specifies the zero-based index of the bit within the bitmap. The routine sets this bit to one.

Return value

None

Remarks

Callers of RtlSetBit 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, RtlSetBit can be called at any IRQL.

Requirements

Requirement Value
Minimum supported client Available in Windows XP and later versions of Windows.
Target Platform Universal
Header wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)
Library NtosKrnl.lib
DLL NtosKrnl.exe
IRQL <= APC_LEVEL (See Remarks section)

See also

RTL_BITMAP

RtlInitializeBitMap