I just installed 0.87 on my Suns running SunOS 4.1.[34] (X11R5) and
SGIs running IRIX {5.3,6.2} (X11R6). I have encountered a problem
with the GL Canvas object.
When the Canvas is created, the col1 member of the FL_OBJECT structure
is initialized to 0xffffffff, which causes fl_get_pixel() to barf with
the following messages:
In FLColor [flcolor.c 648] Bad request 4294967295
X Error of failed request: BadDrawable (invalid Pixmap or Window
parameter)
Major opcode of failed request: 67 (X_PolyRectangle)
Resource id in failed request: 0xa400040
Serial number of failed request: 676
Current serial number in output stream: 676
when the Canvas is created with a decoration set by
fl_set_canvas_decoration().
If fl_set_canvas_decoration() is not called or if col1 is forcibly set
to some color, then things work as expected.
The following code illustrates the problem:
------------------------- try_main.c ---------------------------
#include "forms.h"
#include "try.h"
int main(int argc, char *argv[])
{
FD_try *fd_try;
fl_initialize(&argc, argv, 0, 0, 0);
fd_try = create_form_try();
/* fill-in form initialization code */
/* show the first form */
( void ) fl_prepare_form_window( fd_try->try,
FL_PLACE_FREE_CENTER,
FL_FULLBORDER,
"XFido 2.0 Work Area");
fl_set_canvas_decoration( fd_try->canvas, FL_BORDER_FRAME );
fl_show_form_window( fd_try->try );
fl_do_forms();
return 0;
}
------------------------- try.c ---------------------------
/* Form definition file generated with fdesign. */
#include "forms.h"
#include <stdlib.h>
#include "try.h"
FD_try *create_form_try(void)
{
FL_OBJECT *obj;
FD_try *fdui = (FD_try *) fl_calloc(1, sizeof(*fdui));
fdui->try = fl_bgn_form(FL_NO_BOX, 320, 250);
obj = fl_add_box(FL_UP_BOX,0,0,320,250,"");
fdui->canvas = obj =
fl_add_glcanvas(FL_NORMAL_CANVAS,40,40,230,170,"");
fl_end_form();
fdui->try->fdui = fdui;
return fdui;
}
/*---------------------------------------*/
------------------------- try.h ---------------------------
#ifndef FD_try_h_
#define FD_try_h_
/* Header file generated with fdesign. */
/**** Callback routines ****/
/**** Forms and Objects ****/
typedef struct {
FL_FORM *try;
void *vdata;
long ldata;
FL_OBJECT *canvas;
} FD_try;
extern FD_try * create_form_try(void);
#endif /* FD_try_h_ */
-------------------------------------------------------------
This fails in more or less the same manner on both machines/OSes.
spl
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