---
name: "display-memory"
section: "7ggi"
platform: "linux"
package: "libggi2"
version: "1:2.0.1-2"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/display-memory/7ggi"
---

# display-memory(7ggi)

Display on buffer in main memory

## NAME

display-memory - Display on buffer in main memory

## SYNOPSIS

**display-memory** **:** \[ **-input** \]  \[ **-physz=***sizex***,***sizeydpi* \]  \[  **\[ shmid:***sid* **\]  \[ keyfile:***size***:***id***:***fname* **\]  \[ pointer \]**  \]

## DESCRIPTION

Emulates a linear framebuffer in main memory. The framebuffer can be a shared memory segment, an area specified by the application, or an area allocated by **display-memory** itself.

## OPTIONS

- *-input*

  If the **-input** option is set, an input buffer of **INPBUFSIZE** (default is 8192 bytes) as #define'd in *ggi/display/memory.h* is allocated at the start of the requested memory area.

  When running on shared memory, this option enables you to to give input (using **giiSendEvent**)  to other processes sharing that segment. This technique is demonstrated in **cube3d** and can be used for things like GGI multiplexers.

- **-physz=***sizex***,***sizeydpi*

  This option will provide a physical screen size for applications which wish to remain resolution independent.  *sizex*,*sizey* are the x,y size of the screen in millimeters, unless the optional *dpi* string is affixed, in which case, they represent resolution in dots-per-inch.

- **shmid:***sid*

  use existing shared memory ID *sid*

- **keyfile:***size***:***id***:***fname*

  create a new shm segment with id ftok(*fname*, *id*) of size *size* (preferred method !)

- **pointer**

  use the memory pointed to by *argptr*  (only available to applications calling **ggiOpen**).

  **Important:** If you specify a memory area to use - be sure it's big enough as no checks can or will be made that a certain mode fits into it.

## FEATURES

DirectBuffer support always available.

Unaccelerated.