Category : C++ Source Code
Archive : C_ALL.ZIP
Filename : TI1006.ASC
Output of file : TI1006.ASC contained in archive : C_ALL.ZIP
PRODUCT : Borland C++ NUMBER : 1006
VERSION : 3.0
OS : DOS
DATE : August 12, 1992 PAGE : 1/2
TITLE : Overlaying Turbo Vision
BACKGROUND
Understand that in order to create an overlaid version of
the Turbo Vision source code YOU MUST:
Have the Turbo Assembler Available
Place debugging information in only those modules in
which you plan to debug as TLink may not be able to
accommodate the request.
If you have a copy of Turbo Assembler and are ready to
recompile the Turbo Vision source so that it contains
support for overlays, read on as the next section describes
how to do this.
RECOMPILING FOR OVERLAY SUPPORT
To recompile the source code for Turbo Vision to include
support for overlays you must do the following:
Change directories to the SOURCE directory which is
usually located in c:\borlandc\tvision\source.
Execute the following command:
make -DOVERLAY -B
This will produce a new version of TV.LIB which supports
overlays. It will also produce two .OBJ files, SYSINT.OBJ
and TEVENT.OBJ. These two files contain code for TV's
interrupt handlers and CANNOT be overlayed.
IMPORTANT NOTICE
Be sure to use the same BC switches outlined in the makefile
when compiling your source code to be overlayed with the new
overlayed Turbo Vision library!
When building an overlayed application, you must be sure to
link with the three files SYSINT.OBJ, TEVENT.OBJ, and
TV.LIB.
The two .OBJ files must not be located in an overlay.
PRODUCT : Borland C++ NUMBER : 1006
VERSION : 3.0
OS : DOS
DATE : August 12, 1992 PAGE : 2/2
TITLE : Overlaying Turbo Vision
Your command line should look something like this:
bcc -Vs -B -ml -Yo myfile -Yo- sysint.obj tevent.obj -
Yo tv.lib
See the Programmer's Guide for details on the meanings of
the various Yo switches.
INCREASING PERFOMANCE
To improve performance of your now overlaid Turbo Vision
application you'll want to increase the size of the global
variable __ovrbuffer to 0x2000 or greater.
DISCLAIMER: You have the right to use this technical information
subject to the terms of the No-Nonsense License Statement that
you received with the Borland product to which this information
pertains.
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