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- Program DemoMiscExecOne;
- {DEMEX1 - executing other programs from within a Turbo Pascal program}
-
- Uses DOS,CRT, totMISC;
-
- {IMPORTANT NOTE: you must use the $M compiler directive to instruct the
- compiler to leave some memory for the child process, i.e. leave enough
- memory for the sub-program to run.
-
- $M limits the amount of memory available for the parent program, and
- the precise settings are therefore dependant upon the program's size.
- You will have to experment with different values -- your goal should be
- to allocate "just enough" memory for the parent program, thereby leaving
- the maximum amount possible for the child program.
-
- Other Toolkit units make extensive use of the heap, and in
- most "real life" program you will need to set the heap to a non-zero
- value, e.g. $M $8000,$4000,$4000. As a rule, set the min and max values
- the same. Refer to the Turbo Pascal documentation for further information
- regarding the $M compiler directive.
-
- }
-
- {$M $800,$50,$50}
-
- var RetCode : integer;
-
- begin
- writeln('This is the parent program!');
- Retcode := RunDOS('Type EXIT to return to the parent program');
- writeln('Welcome back');
- if RetCode <> 0 then
- Writeln('Something went wrong!');
- writeln('Press any key...');
- repeat until keypressed;
- end.
-
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-