Path: utzoo!dciem!c-art!klg!ed
From: ed@klg.UUCP ( KL Group Inc.)
Newsgroups: comp.windows.x
Subject: Re: Help with XView`s PANEL_LIST
Message-ID: <121@klg.UUCP>
Date: 24 Jan 91 15:09:33 GMT
References: <9101231625.AA03709@fis1.shearson.com>
Reply-To: ed@klg.UUCP (Edward Lycklama - KL Group Inc.)
Organization: KL Group Inc., Toronto
Lines: 38

In article <9101231625.AA03709@fis1.shearson.com> fgreco@govt.shearson.COM (Frank Greco) writes:
>> 
>> > 1.  I'm xv_create(ing) a PANEL_LIST.  Whenever I insert or delete items,
>> >it appears as if OW redraws the entire list.  This causes a "flashing"
>> >that is very annoying (especially since I update the list frequently).
>> >I'm hoping that there is a way around this... Any clues?
>> 
>>  
>> I got this function from the net. Original author is not knowned. It sets the
>> contents of a scrolling list from a list of string in an argc-style parameter.
>>  
>> Since it update the entire list at once, there is no "flashing" for each 
>> insert or delete. (There is only 1 re-draw of the list).
>> 

Another solution is to use the PANEL_PAINT attribute; every time you insert an
item into the list, do this:

    for (i=0; i<NSTRINGS; i++)  {
        xv_set(object,
            PANEL_LIST_INSERT,      i,
            PANEL_LIST_STRING,      i, string,
            PANEL_PAINT,            PANEL_NONE,
        0);
    }

Once all insertions have taken place, set PANEL_PAINT to PANEL_CLEAR:

    xv_set(object,
        PANEL_PAINT,    PANEL_CLEAR,
    0);

Ed Lycklama

KL Group Inc.                       | Phone: (416) 594-1026 
134 Adelaide St. E, Suite 204       | Fax:   (416) 594-1919
Toronto, Ontario, M5C 1K9           | UUCP:  ut{zoo|csri}!suncan!klg!ed
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