---
name: "retrace_count"
section: "3alleg4"
platform: "linux"
package: "allegro4-doc"
version: "2:4.4.3.1-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/retrace_count/3alleg4"
---

# retrace\_count(3alleg4)

Retrace count simulator. Allegro game programming library.

## NAME

retrace\_count - Retrace count simulator. Allegro game programming library.

## SYNOPSIS

**#include \<allegro.h\>**

**extern volatile int retrace\_count;**

## DESCRIPTION

If the retrace simulator is installed, this count is incremented on each vertical retrace; otherwise, if the refresh rate is known, the count is incremented at the same rate (ignoring retraces); otherwise, it is incremented 70 times a second. This provides a way of controlling the speed of your program without installing user timer functions.

## SEE ALSO

**ex3d**(3alleg4), **exblend**(3alleg4), **exdbuf**(3alleg4), **exflip**(3alleg4), **exlights**(3alleg4)