invalidate bitmap

Archived
1

OK what am i missing here, I want to clear the bitmap “bigtype” from memory after i leave that screen. its being persistent.

Sub Homescreen()
'on button press
Secondsub()
End sub

Sub Secondsub()
bigtype = CreateObject("roBitmap", {width: 1100, height: 1620, AlphaEnable: false})
'on button press
bigtype = invalid
ThirdSub()
return
End sub

Sub ThirdSub()
'bigtype still in memory here
'if closescreen back to Homescreen() bigtype is removed from memory

End sub

thanks

2

How do you know it’s still in memory?
It shouldn’t really matter but if you want to force it you might need to call RunGarbageCollector.

–Mark

3

r2d2_bitmaps.
It matters because there is only a tiny amount of memory to work with to begin with. (3100)
I will try collecting the garbage.
thanks Mark.

4

Not sure if this affects the variable itself, but the video memory won’t be released until the next screen.Swapbuffers() or screen.Finish() call.

  • Joel
5

OK so what I was missing was not calling region=invalid at the same time as bitmap=invalid, now it goes away when its supposed to.