PRODUCT : Borland C++ NUMBER : 1025
VERSION : 3.1
OS : DOS
DATE : October 23, 1992 PAGE : 1/2
TITLE : Optimizing Screen Updates with Turbo Vision v3.1
PROBLEM:
--------
Turbo Vision with the Borland C++ and Application Frameworks
3.1 package seems very slow, much slower that the previous
version, in fact. What happened and how can I fix it?
SOLUTION:
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The problem is twofold: One, snow checking was inadvertently
turned on by default and two, the new operator that is in TV.LIB
has debugging code compiled in with it. Fortunately, the
solution to these problems is very simple. As a Borland C++ and
Application Frameworks customer, you also have the source code to
Turbo Vision. You will need it to fix these problems, and here
is how you do it.
(1) To fix the snow checking problem, go to the
TVISION\SOURCE directory of the product and edit the file
TSCREEN.CPP. Change line 42 from
Boolean near TScreen::checkSnow = True;
to
Boolean near TScreen::checkSnow = False;
Recompile the module with the following command line. You
may need to make adjustments to the include directory path for
the compiler to find