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From: mrx@dhw68k.cts.com (Mark Murphy)
Newsgroups: comp.sys.mac.hypercard
Subject: Slow Lock Screen and Unlock Screen
Message-ID: <1990Dec12.225940.6563@dhw68k.cts.com>
Date: 12 Dec 90 22:59:40 GMT
Organization: Wolfskill & Dowling residence; Anaheim, CA (USA)
Lines: 30


   I have noticed something very wrong with Lock Screen and Unlock Screen.
It seems to me that they have gotten slower!  I have the following script:

  global x,y,z

  lock screen
  put line 1 of x into fld id 90
  put line 2 of y into fld id 91
  put line 3 of z into fld id 92
  unlock screen

Now... it takes this script about 78 ticks to execute on a MacIIcx with 256
colors.  In other words, to update three fields on the screen, it takes a
little over a second.  If I remove the lock and unlock screen commands, the
script only takes 18 ticks.  Wow!  What a difference!  Looks like 30 ticks
for each lock and unlock.
   I use the lock and unlock so the screen gets updated all at once... so the
user does not see the three fields get updated one at a time.  Yet it seems
like there is quite a performance hit using lock and unlock.  I don't seem
to remember lock and unlock taking soooooo long in previous versions of HC.

Oh.... did I forget to mention I am using HC 2.0?

One other thing I have noticed... selecting text in a field via script takes
a long time!  Something like 'select text of fld id 90' takes quite some time.
It is not the quick response I need to make the stack flow smoothly.

-- 
mark				mrx@dhw68k.cts.com