UnLockBuffer - Learn To Code - PlayBASIC Documentation

UnLockBuffer

Parameters: NONE

Returns: NONE

UnLockBuffer lets us turn off the locking placed upon the current graphics buffer.

FACTS:

* UnlockBuffer expects that buffer will previous Locked using . If it wasn't, this may cause expected results.

* Note: We highly recommended you read the Images tutorials also!

Mini Tutorial:

This example times (in milliseconds) how long it takes to draw 1000 dots to the screen with and without the lockbuffer commands.

; Set the SCreenWidth and Screen Height Values and
; place them in the variables SW and SH

  SW=GetScreenWidth()
  SH=GetScreenHeight()



; Draw 1000 pixels , but this time using the
; locked buffer commands
  t=Timer()
  For lp =0 To 1000
     Dot Rnd(sw),Rnd(sh)
  Next
  Print Timer()-t



; Draw 1000 pixels, but this time using the
; locked buffer commands
  t=Timer()
  LockBuffer
  For lp =0 To 1000
     Dot Rnd(sw),Rnd(sh)
  Next
  UnLockBuffer
  Print Timer()-t

; Display the Screen and wait for the user to press a key
  Sync
  WaitKey

Note: These results are from my Duron 800mhz system. The times will vary from system to system.

  36.0
  24.0


Related Info:	Images \| LockBuffer :