Difference between revisions of "$SCREENHIDE"

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* $SCREENHIDE may be used at the start of a program to hide the main program window when using a [[$CONSOLE|console]] window.
* $SCREENHIDE may be used at the start of a program to hide the main program window when using a [[$CONSOLE|console]] window.
* $SCREENHIDE must be used before the [[$SCREENSHOW]] [[Metacommand|metacommand]] can be used.
* The [[_SCREENHIDE]] statement must be used before [[_SCREENSHOW]] can be used in sections of a program.
* The [[_SCREENHIDE]] statement must be used before [[_SCREENSHOW]] can be used in sections of a program.
* '''QB64 [[Metacommand|metacommand]]s cannot be commented out with [[apostrophe]] or [[REM]]'''
* '''QB64 [[Metacommand|metacommand]]s cannot be commented out with [[apostrophe]] or [[REM]]'''.





Revision as of 01:05, 9 September 2017

The $SCREENHIDE metacommand can be used to hide the main program window throughout a program.


Syntax

$SCREENHIDE


  • $SCREENHIDE may be used at the start of a program to hide the main program window when using a console window.
  • The _SCREENHIDE statement must be used before _SCREENSHOW can be used in sections of a program.
  • QB64 metacommands cannot be commented out with apostrophe or REM.


Examples

Example: Hiding a program when displaying a message box in Windows.

$SCREENHIDE DECLARE DYNAMIC LIBRARY "user32" FUNCTION MessageBoxA& (BYVAL hWnd%&, BYVAL lpText%&, BYVAL lpCaption%&, BYVAL uType~&) END DECLARE DECLARE DYNAMIC LIBRARY "kernel32" SUB ExitProcess (BYVAL uExitCode~&) END DECLARE DIM s0 AS STRING DIM s1 AS STRING s0 = "Text" + CHR$(0) s1 = "Caption" + CHR$(0) ExitProcess MessageBoxA(0, _OFFSET(s0), _OFFSET(s1), 0)

Code by Michael Calkins


See also



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