al_is_system_installed
bool al_is_system_installed(void)
Returns true if Allegro is initialized, otherwise returns false.
Most helpful discussions:
- Control Collision
- Possible inconsistency in the behavior of al_set_sample_instance_playing() ?
- Possible thread deadlock/hang in al_detach_voice() ?
- difficult bug...meaning of "Run-Time Check Failure #0 - The value of ESP.."
- Sprite loading problem
- bitmap loading problems
- al_get_opengl_texture
- A5 colour depth and colours in general
- Simple Multitexturing GLSL? [A5]