NAME¶

mouse_x, mouse_y, mouse_z, mouse_w, mouse_b, mouse_pos - Global variable with the mouse position/button state. Allegro game programming library.

SYNOPSIS¶

#include <allegro.h>

extern volatile int mouse_x;

extern volatile int mouse_y;

extern volatile int mouse_z;

extern volatile int mouse_w;

extern volatile int mouse_b;

extern volatile int mouse_pos;

DESCRIPTION¶

Global variables containing the current mouse position and button state. Wherever possible these values will be updated asynchronously, but if mouse_needs_poll() returns TRUE, you must manually call poll_mouse() to update them with the current input state. The `mouse_x' and `mouse_y' positions are integers ranging from zero to the bottom right corner of the screen. The `mouse_z' and `mouse_w' variables hold the current vertical and horizontal wheel position, when using an input driver that supports wheel mice. The `mouse_b' variable is a bitfield indicating the state of each button: bit 0 is the left button, bit 1 the right, and bit 2 the middle button. Additional non standard mouse buttons might be available as higher bits in this variable. Usage example:

   if (mouse_b & 1)


      printf("Left button is pressed\n");


   


   if (!(mouse_b & 2))


      printf("Right button is not pressed\n");


   

   int pos, x, y;


   


   pos = mouse_pos;


   x = pos >> 16;


   y = pos & 0x0000ffff;


   

SEE ALSO¶

install_mouse(3), poll_mouse(3), mouse_needs_poll(3), exalpha(3), exlights(3), exmouse(3), exshade(3), exspline(3), extrans(3)