qb64/internal/help/$SCREENHIDE.txt

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


{{PageSyntax}}
: [[$SCREENHIDE]]


* $SCREENHIDE may be used at the start of a program to hide the main program window when using a [[$CONSOLE|console]] window.
* 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]]'''.


{{PageExamples}}
''Example:'' Hiding a program when displaying a message box in Windows.
{{CodeStart}} '' ''
{{Cl|$SCREENHIDE}}
{{Cl|DECLARE DYNAMIC LIBRARY}} "user32"
  {{Cl|FUNCTION}} MessageBoxA& ({{Cl|BYVAL}} hWnd%&, {{Cl|BYVAL}} lpText%&, {{Cl|BYVAL}} lpCaption%&, {{Cl|BYVAL}} uType~&)
{{Cl|DECLARE LIBRARY|END DECLARE}}
{{Cl|DECLARE DYNAMIC LIBRARY}} "kernel32"
  {{Cl|SUB}} ExitProcess ({{Cl|BYVAL}} uExitCode~&)
{{Cl|DECLARE LIBRARY|END DECLARE}}
{{Cl|DIM}} s0 {{Cl|AS}} {{Cl|STRING}}
{{Cl|DIM}} s1 {{Cl|AS}} {{Cl|STRING}}
s0 = "Text" + {{Cl|CHR$}}(0)
s1 = "Caption" + {{Cl|CHR$}}(0)
ExitProcess MessageBoxA(0, {{Cl|_OFFSET (function)|_OFFSET}}(s0), {{Cl|_OFFSET (function)|_OFFSET}}(s1), 0)
{{CodeEnd}}{{small|Code by Michael Calkins}}


{{PageSeeAlso}}
* [[$CONSOLE]], [[$SCREENSHOW]]
* [[_SCREENHIDE]], [[_SCREENSHOW]]
* [[_CONSOLE]]


{{PageNavigation}}