.\" Generated by the Allegro makedoc utility
.TH exalpha 3alleg4 "version 4.4.2" "Allegro" "Allegro manual"
.SH NAME
exalpha \- Creating and using 32 bit RGBA sprites. Allegro game programming library.\&
.SH SYNOPSIS
.B #include <allegro.h>

.sp
.B Example exalpha
.SH DESCRIPTION
This program demonstrates how to use the 32 bit RGBA
translucency functions to store an alpha channel along with
a bitmap graphic.  Two images are loaded from disk. One will
be used for the background and the other as a sprite. The
example generates an alpha channel for the sprite image,
composing the 32 bit RGBA bitmap during runtime, and draws
it at the position of the mouse cursor.

.SH SEE ALSO
.BR BITMAP (3alleg4),
.BR END_OF_MAIN (3alleg4),
.BR SCREEN_H (3alleg4),
.BR SCREEN_W (3alleg4),
.BR allegro_error (3alleg4),
.BR allegro_init (3alleg4),
.BR allegro_message (3alleg4),
.BR blit (3alleg4),
.BR clear_keybuf (3alleg4),
.BR create_bitmap (3alleg4),
.BR destroy_bitmap (3alleg4),
.BR draw_trans_sprite (3alleg4),
.BR drawing_mode (3alleg4),
.BR font (3alleg4),
.BR getb (3alleg4),
.BR getg (3alleg4),
.BR getpixel (3alleg4),
.BR getr (3alleg4),
.BR install_keyboard (3alleg4),
.BR install_mouse (3alleg4),
.BR install_timer (3alleg4),
.BR keypressed (3alleg4),
.BR load_bitmap (3alleg4),
.BR makecol (3alleg4),
.BR mouse_x (3alleg4),
.BR mouse_y (3alleg4),
.BR putpixel (3alleg4),
.BR rectfill (3alleg4),
.BR replace_filename (3alleg4),
.BR screen (3alleg4),
.BR set_alpha_blender (3alleg4),
.BR set_color_conversion (3alleg4),
.BR set_color_depth (3alleg4),
.BR set_gfx_mode (3alleg4),
.BR set_multiply_blender (3alleg4),
.BR set_write_alpha_blender (3alleg4),
.BR solid_mode (3alleg4),
.BR stretch_blit (3alleg4),
.BR textprintf_ex (3alleg4)