---
name: "RtlInitializeBitMap"
section: "3w"
platform: "linux"
package: "libwine-dev"
version: "1.4.1-4"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/RtlInitializeBitMap"
---

# RtlInitializeBitMap(3w)

## NAME

**RtlInitializeBitMap** (NTDLL.@)

## SYNOPSIS

VOID RtlInitializeBitMap\
  (\
   PRTL\_BITMAP *lpBits*,\
   PULONG      *lpBuff*,\
   ULONG       *ulSize*\
  )

## DESCRIPTION

Initialise a new bitmap.

## PARAMS

*lpBits* **\[In\]**  Bitmap pointer.

*lpBuff* **\[In\]**  Memory for the bitmap.

*ulSize* **\[In\]**  Size of *lpBuff* in bits.

## RETURNS

Nothing.

## NOTES

*lpBuff* must be aligned on a **ULONG** suitable boundary, to a multiple of **32** bytes in size (irrespective of *ulSize* given).

## IMPLEMENTATION

Declared in **"winternl.h"**.

Implemented in **"dlls/ntdll/rtlbitmap.c"**.

Debug channel **"ntdll"**.