Volume 7A: XView Programming Manual

Example 12-6. The notice.c program (continued)

xv_set(panel, PANEL_LAYOUT, PANEL_HORIZONTAL, NULL);

(void) xv_create(panel, PANEL_BUTTON,

PANEL_LABEL_STRING, "Commit...",

PANEL_NOTIFY_PROC, my_notify_proc,

XV_KEY_DATA, MSG_ITEM, msg_item,

/*

* attach a prompt specific for this button used by

* notices

*/

XV_KEY_DATA, NOTICE_PROMPT, "Update all changes?",

/*

* Note there is no callback func here, but one could be

* written

*/

NULL);

window_fit(panel);

window_fit(frame);

xv_main_loop(frame);

}

/*

* my_notify_proc()

* The "key data" associated with the panel item is extracted via

* xv_get(). The resulting choice is displayed in the panel

* message item.

*/

Xv_opaque

my_notify_proc(item, event)

Panel_item item;

Event *event;

{

int result;

int (*func)();

char *prompt;

Panel_item msg_item;

Panel panel;

static Xv_notice notice = NULL;

func = (int(*)())xv_get(item, XV_KEY_DATA, CALLBACK_FUNC);

prompt = (char *)xv_get(item, XV_KEY_DATA, NOTICE_PROMPT);

msg_item = (Panel_item)xv_get(item, XV_KEY_DATA, MSG_ITEM);

panel = (Panel)xv_get(item, PANEL_PARENT_PANEL);

/*

* Create the notice and get a response.

*/

if (!notice) {

notice = xv_create(panel, NOTICE,

NOTICE_LOCK_SCREEN, TRUE,

NOTICE_STATUS, &result,

XV_SHOW, TRUE,

NOTICE_MESSAGE_STRINGS,

prompt,

"Press YES to confirm",

"Press NO to cancel",

NULL,

322 XView Programming Manual

Example 12-6. The notice.c program (continued)

NOTICE_BUTTON_YES, "YES",

NOTICE_BUTTON_NO, "NO",

NULL);

}

else {

/*

* If the notice has been created, just set its

* message strings and show it.

*/

xv_set(notice,

XV_SHOW, TRUE,

NOTICE_MESSAGE_STRINGS,

prompt,

"Press YES to confirm",

"Press NO to cancel",

NULL,

NULL);

}

switch(result) {

case NOTICE_YES:

xv_set(msg_item, PANEL_LABEL_STRING, "Confirmed", NULL);

if (func)

(*func)();

break;

case NOTICE_NO:

xv_set(msg_item, PANEL_LABEL_STRING, "Cancelled", NULL);

break;

case NOTICE_FAILED:

xv_set(msg_item, PANEL_LABEL_STRING, "unable to pop-up",

NULL);

break;

default:

xv_set(msg_item, PANEL_LABEL_STRING, "unknown choice",

NULL);

}

}

12.5 Notice Package Summary

Table 12-3 lists the attributes for the NOTICE package. These attributes are described fully in

the XView Reference Manual.

Notices

Notices 323

Table 12-3. Notice Attributes

NOTICE_BLOCK_THREAD NOTICE_LOCK_SCREEN

NOTICE_BUSY_FRAMES NOTICE_MESSAGE_STRING

NOTICE_BUTTON NOTICE_MESSAGE_STRINGS

NOTICE_BUTTON_NO NOTICE_MESSAGE_STRINGS_ARRAY_PTR

NOTICE_BUTTON_YES NOTICE_NO_BEEPING

NOTICE_EVENT_PROC NOTICE_STATUS

NOTICE_FOCUS_XY NOTICE_TRIGGER

NOTICE_FONT NOTICE_TRIGGER_EVENT

XV_KEY_DATA XV_SHOW

324 XView Programming Manual

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