_FREEFONT - mkilgore/QB64pe GitHub Wiki

DO UNTIL EOF(1): found = found + 1
  LINE INPUT (file statement) #1, font$          
  f& =_LOADFONT(path$ + font$, 30, style$)   
  IF f& > 0 THEN                  'check for valid handle values > 0
    OK = OK + 1
    PRINT (file statement) #2, font$
    _FONT f&                      'will create error if handle is invalid!
    PRINT "Hello World!"    
    PRINT: PRINT: PRINT font$; f& 
    PRINT "Press any key."   
    K$ = INPUT$(1)
    _FONT 16                      'use QB64 default font to free tested font
    _FREEFONT f&                  'returns an error if handle <= 0! 
    CLS  
  END IF     
  PRINT
IF K$ = CHR$(27) THEN EXIT DO
LOOP
CLOSE
PRINT: PRINT: PRINT "Found"; found; "TTF files,"; OK; "can use Monospace,"
END '' ''

Found 106 TTF files, 13 can use Monospace.

fontpath$ = ENVIRON$("SYSTEMROOT") + "\fonts\lucon.ttf" 
style$ = "MONOSPACE, ITALIC, BOLD"
fontsize% = 20

_FONT16
PRINT
PRINT "This is the QB64 default _FONT16! To change, press any key!"
DO: SLEEP: LOOP UNTIL INKEY$ <> ""

GOSUB ClearFont  'call will not free anything if font& = 0

font& = _LOADFONT(fontpath$, fontsize%, style$)
IF font > 0 THEN _FONT font&  'NEVER try to load a font value less than 1!
PRINT
PRINT "A NEW _FONT style. To change to default, press any key!"
DO: SLEEP: LOOP UNTIL INKEY$ <> ""

GOSUB ClearFont  'call will free a valid font handle from memory

END

ClearFont: 
IF font& > 0 THEN
    _FONT16   'change used font to the QB64 8x16 default font
    _FREEFONT font&
    PRINT: PRINT "The previous font was freed with _FREEFONT!"
ELSE : PRINT: PRINT "_FREEFONT was not used!"
END IF
RETURN '' ''