Difference between revisions of "$SCREENHIDE"

From QB64 Wiki
Jump to navigation Jump to search
imported>SMcNeill
(style guidelines)
 
(One intermediate revision by one other user not shown)
Line 6: Line 6:




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




Line 26: Line 25:
s0 = "Text" + {{Cl|CHR$}}(0)
s0 = "Text" + {{Cl|CHR$}}(0)
s1 = "Caption" + {{Cl|CHR$}}(0)
s1 = "Caption" + {{Cl|CHR$}}(0)
ExitProcess MessageBoxA(0, {{Cl|_OFFSET (function)|_OFFSET}}(s0), {{Cl|_OFFSET(function)|_OFFSET}}(s1), 0)
ExitProcess MessageBoxA(0, {{Cl|_OFFSET (function)|_OFFSET}}(s0), {{Cl|_OFFSET (function)|_OFFSET}}(s1), 0)
{{CodeEnd}}{{small|Code by Michael Calkins}}
{{CodeEnd}}{{small|Code by Michael Calkins}}



Latest revision as of 02:19, 24 January 2021

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



Navigation:
Keyword Reference - Alphabetical
Keyword Reference - By Usage
Main Wiki Page