_WINDOWHASFOCUS - QB64Official/qb64 GitHub Wiki
The _WINDOWHASFOCUS function returns true (-1) if the current program's window has focus. Windows-only.
Syntax
hasFocus%% = _WINDOWHASFOCUS
Description
- The function returns true (-1) if the current program is the topmost window on the user's desktop and has focus. If the current program is running behind another window, the function returns false (0).
- Keywords currently not supported.
Availability
- Build 20170924/68 and up.
Example(s)
Detecting if the current program has focus. Windows and Linux-only.
DO
IF _WINDOWHASFOCUS THEN
COLOR 15, 6
CLS
PRINT "*** Hi there! ***"
ELSE
COLOR 0, 7
CLS
PRINT "(ain't nobody looking...)"
END IF
_DISPLAY
_LIMIT 30
LOOP
Explanation: The program will display "** Hi There! **" while the window is the topmost and is being manipulated by the user. If another window, the taskbar or the desktop are clicked, the program window loses focus and the message "(ain't nobody looking...)" is displayed.