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

# GetRegionData(3w)

## NAME

**GetRegionData** (GDI32.@)

## SYNOPSIS

DWORD GetRegionData\
  (\
   HRGN      *hrgn*,\
   DWORD     *count*,\
   LPRGNDATA *rgndata*\
  )

## DESCRIPTION

Retrieves the data that specifies the region.

## PARAMS

*hrgn* **\[In\]**  Region to retrieve the region data from.

*count* **\[In\]**  The size of the buffer pointed to by *rgndata* in bytes.

*rgndata* **\[In\]**  The buffer to receive data about the region.

## RETURNS

**Success:** If *rgndata* is **NULL** then the required number of bytes. Otherwise, the number of bytes copied to the output buffer.

**Failure:** **0.**

## NOTES

The format of the Buffer member of **RGNDATA** is determined by the iType member of the region data header. Currently this is always **RDH\_RECTANGLES**, which specifies that the format is the array of **RECT**'s that specify the region. The length of the array is specified by the nCount member of the region data header.

## IMPLEMENTATION

Declared in **"gdiplusflat.h"**.

Implemented in **"dlls/gdi32/region.c"**.

Debug channel **"region"**.