Xref: utzoo alt.toolkits.xview:227 comp.windows.open-look:1807
Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!uunet!stanford.edu!leland.Stanford.EDU!news
From: erose@hydro.Stanford.EDU (Eric Rose)
Newsgroups: alt.toolkits.xview,comp.windows.open-look
Subject: problem attaching XV_KEY_DATA to panel
Message-ID: <1991Jun27.221718.18172@leland.Stanford.EDU>
Date: 27 Jun 91 22:17:18 GMT
Sender: news@leland.Stanford.EDU (Mr News)
Organization: Stanford University, California, USA
Lines: 55



I seem to have found a problem storing a pointer with a Panel using
XV_KEY_DATA.  The manual does not explicitly state that this is possible
for all xview objects, but then again is does not give any reason why
this is not possible.

I am running xview 2.0 (I think) under openwin 2.0 on a Sparc 2, SunOS 4.1.1

The code prints the string correctly while in main, but in the button callback
prints garbage for the string.

-------------------------------------------------------------------------------
#include <xview/xview.h>
#include <xview/frame.h>
#include <xview/panel.h>
#include <stdio.h>

Frame frame;
Panel panel;
char *string = "Hello World";

void button_cb();

main(argc,argv)
int argc;
char *argv[];
{
    xv_init(XV_INIT_ARGC_PTR_ARGV,&argc,argv,NULL);
    frame = (Frame)xv_create(NULL,	FRAME,
			     FRAME_LABEL,	"Test",
			     XV_WIDTH,	200,
			     XV_HEIGHT,	100,
			     NULL);
    printf("The string is: \"%s\"\n",string);
    panel = (Panel)xv_create(frame,	PANEL,
			     XV_KEY_DATA,	1,	string,
			     NULL);
    printf("The string still is: \"%s\"\n",string);
    xv_create(panel,	PANEL_BUTTON,
	      PANEL_LABEL_STRING,	"Verify & Quit",
	      PANEL_NOTIFY_PROC,	button_cb,
	      NULL);
    xv_main_loop(frame);
    exit(0);
}

void button_cb(item,event)
Panel_item	item;
Event		*event;
{
    printf("The string now is \"%s\"\n",(char*)xv_get(panel,XV_KEY_DATA,1));
    xv_destroy_safe(frame);
}
-------------------------------------------------------------------------------