55 lines
1.3 KiB
Plaintext
55 lines
1.3 KiB
Plaintext
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{* DEMOEXEC.PAS - demonstration progam for calling C library functions
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*
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* Microsoft Pascal release 3.30 can call large model C functions.
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* Please read PASEXEC.INC for more details on interlanguage calling.
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*
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* To compile and link DEMOEXEC.PAS
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*
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* pas1 demoexec;
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* pas2
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* link demoexec,,,cexec; (must search CEXEC.LIB)
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*}
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program demoexec(input,output);
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{$include : 'pasexec.inc'}
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var
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i : integer;
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NULL : integer4;
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value
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NULL := 0;
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begin
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{* invoke command.com with a command line
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*
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* dir *.for
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*}
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i := system(ads('dir *.pas'*chr(0)));
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writeln (output,'system return code = ',i);
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writeln (output,' ');
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{* invoke a child process
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*
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* exemod (display usage line only)
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*}
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i := spawnlp(0,ads('exemod'*chr(0)),ads('exemod'*chr(0)),NULL);
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writeln (output,'spawnlp return code =',i);
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writeln (output,' ');
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{* invoke an overlay process (chaining)
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*
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* exemod demoexec.exe
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*}
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i := spawnlp(2,ads('exemod'*chr(0)),ads('exemod'*chr(0)),
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ads('demoexec.exe'*chr(0)),NULL);
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{* we should never see this if spawnlp (overlay) is successful
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*}
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writeln (output,'spawnlp return code =',i);
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writeln (output,' ');
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end.
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