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mouse_seteventhandler(3) Svgalib User Manual mouse_seteventhandler(3)

mouse_seteventhandler, mouse_setdefaulteventhandler - set a mouse event handler

#include <vgamouse.h>
typedef void (*__mouse_handler) (int button, int dx, int dy, int dz , int drx, int dry, int drz); /* is already in #include <vgamouse.h> included */
void mouse_seteventhandler(__mouse_handler handler);
void mouse_setdefaulteventhandler(void);

mouse_update(3) and mouse_waitforupdate(3) will call this function for each change of mouse state and you can do your own book keeping and maybe even draw a mouse cursor.
mouse_setdefaulteventhandler() activates the default handler.

svgalib(7), vgagl(7), libvga.config(5), eventtest(6), mouse_close(3), mouse_init(3), mouse_getposition_6d(3), mouse_setposition(3), mouse_setscale(3), mouse_setwrap(3), mouse_setxrange(3), mouse_getx(3), mouse_update(3), mouse_waitforupdate(3), vga_setmousesupport(3), vga_waitevent(3)

This manual page was edited by Michael Weller <>. The exact source of the referenced function as well as of the original documentation is unknown.
It is very likely that both are at least to some extent are due to Harm Hanemaayer <>.
Occasionally this might be wrong. I hereby asked to be excused by the original author and will happily accept any additions or corrections to this first version of the svgalib manual.
27 July 1997 Svgalib (>= 1.2.11)

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