From:	"Damian Yerrick" <web DOT poison AT pineight DOT 8m DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Mouse Events Problem
Date:	Tue, 19 Oct 1999 18:31:51 -0500
Organization:	Rose-Hulman Institute of Technology
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Hammy <darren AT grayce DOT freeserve DOT co DOT uk> wrote in message
news:7uitf2$qor$1 AT news8 DOT svr DOT pol DOT co DOT uk...
> Probably not the best newsgroup but heres my problem.
> Im trying to write an event manager for a mouse. The idea
> I have so far is this: i have created a structure that holds the
> coordinates of rectangles for which a mouse can click in a
> trigger an event.  Also in the struct I have a byte for the button

Limit yourself to 128 buttons on screen? I'd use an int.

> that triggers the event, a byte for if the rectangle is active,
> and a pointer to a function(the code that is run when event is
> triggered).

So it'd look like this:

typedef struct ClickRect
{
  struct ClickRect *prev;
  struct ClickRect *next;
  int (*triggerFunc)(int, int);
  int buttonID;
  char active;
} ClickRect;

>     I have this structure as a linked list and have ordered it in
> active/disable, now, i can image this being rather slow the more events i
> have.  So, does anyone know of the a better way to do this?

qsort() the rectangles by top coordinate and use a
bsearch().


hope this helps
--
Damian Yerrick
CM 398, Rose-Hulman Institute of Technology
5500 Wabash Ave
Terre Haute, IN 47803
http://come.to/yerrick

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