From: mapson AT mapson DOT com (mapson)
Newsgroups: comp.os.msdos.djgpp
Subject: Allegro GUI question
Date: Mon, 14 Jul 1997 23:04:58 GMT
Organization: Yale University, Department of Computer Science, New Haven, CT
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Message-ID: <33cab096.48306491@babyblue.cs.yale.edu>
NNTP-Posting-Host: slip-ppp-node-01.cs.yale.edu
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
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I've read the docs, gone through all example programs, studied the
Grabber code... still, it eludes me just precisely how to use various
features of the GUI package in Allegro.

For a start, here's a little problem I have: I can make a nice little
d_check_proc box, but I have no idea how to read back the value of the
box (i.e., checked or not checked). I'm sure it is easy, but I just
don't know how.

Here's my code:
DIALOG g_toggle_dialog[] =
{
>// (dialog proc)     (x)   (y)   (w)   (h)   (fg)  (bg)  (key) (flags)  (d1)  (d2)  (dp)
>{ d_check_proc,      16,   28,   120,  12,   255,   0,    0,  D_SELECTED, 0,   0,   "Hello" },
>{ d_check_proc,      16,   40,   120,  12,   255,   0,    0,    0,        1,   0,   "Jambo" },
>{ d_button_proc,     60,   52,   55,   12,   255,   0,    0,   D_EXIT,    0,   0,   "OK" },
>{ NULL,                       0,    0,    0,     0,    0,    0,    0,    0,        0,   0,    NULL }
};

[sorry, I needed the ">"s to stop relentless word wrap]

now, if I call it with a 
do_dialog(g_toggle_dialog,-1);

it certainly does the pretty stuff. But how do I know if "Hello" is
checked or not by the user? 

Post here, please. And any other tips on the basic philosophy of the
Allegro GUI approach would be appreciated... it seems very powerful,
but I must say that I think it is perhaps the least well documented
portion of Allegro. Making menus work properly has been very
difficult, for instance- I find myself skipping the do_dialog manager
altogether and just use do_menu to avoid tangles.

Thanks, all.