Metacommand

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Revision as of 21:52, 9 September 2010 by imported>Clippy
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Qbasic Metacommands are commands that are commented out and start with $.


Syntax:

REM $INCLUDE: 'QB.BI' 'loads a referance file or library
REM $DYNAMIC 'enables resizing of array dimensions
REM $STATIC 'arrays cannot be resized
$CHECKING: OFF 'disables QB64 C++ event checking


  • $CHECKING: OFF should only be used with errorless code where every CPU cycle counts! Use ON to re-enable event checking.
  • Event $CHECKING is NOT commented out!
  • Metacommands are normally used at the program start and are in effect throughout the program.
  • $INCLUDE can be used at the beginning or at the end of program SUB procedures. Placing the reference elsewhere creates a QB64 compiler error!
  • $STATIC makes all arrays STATIC or unchangeable in size. Use DIM only!
  • $DYNAMIC allows larger arrays that are changeable in size. Use REDIM for changeable sizes!
  • Metacommands should have their own program line since they are commented out.


See also:

DIM, REDIM

ON TIMER (n)




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