---
name: "al_lock_bitmap_region_blocked"
section: "3alleg5"
platform: "linux"
package: "allegro5-doc"
version: "2:5.2.10.1+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/al_lock_bitmap_region_blocked/3alleg5"
---

# al\_lock\_bitmap\_region\_blocked(3alleg5)

Allegro 5 API

## NAME

al\_lock\_bitmap\_region\_blocked - Allegro 5 API

## SYNOPSIS

-

  ```
  #include <allegro5/allegro.h>
  ALLEGRO_LOCKED_REGION *al_lock_bitmap_region_blocked(ALLEGRO_BITMAP *bitmap,
     int x_block, int y_block, int width_block, int height_block, int flags)
  ```

## DESCRIPTION

Like al\_lock\_bitmap\_blocked(3alleg5), but allows locking a sub-region, for performance. Unlike al\_lock\_bitmap\_region(3alleg5) the region specified in terms of blocks and not pixels.

## SINCE

5\.1.9

## SEE ALSO

al\_lock\_bitmap\_region(3alleg5), al\_lock\_bitmap\_blocked(3alleg5)