How do I free a PixMap from memory?

BlitzMax Forums/BlitzMax Beginners Area/How do I free a PixMap from memory?

Abomination

(Posted 2006) [#1]

I want to load a PixMap, retrieve some colors and than delete it.
It sounds so simple to do, but I have no clue.
"Release"? (has something to do with an integer)
"flushmem"? (Identifier flushmem not found)
"AAARG" (help is apreciated)

CS_TBL

(Posted 2006) [#2]

MyPixmap=null

(=null is the general 'release' in BMax, also works on other stuff)

FlameDuck

(Posted 2006) [#3]

Load another pixmap in it's place? Wait for the variable to go out of scope? Remove it from it's collection?

tonyg

(Posted 2006) [#4]

If you create in in it's own function you can use local mypixmap:TPixmap=loadpixmap("blah.png"), extract your colours and when you exit the function the pixmap will be gone. e.g. Going out of scope.

Graphics 640 , 480
GCSetMode 2 ' Turn off auto-GC and do it manually
GCCollect()
Print "Before we start " + GCMemAlloced()
extract_colours("max.png")
GCCollect()
Print "Pixmap gone " + GCMemAlloced()
Function extract_colours(filename:String)
	GCCollect()
	Print "Pre-pixmap " + GCMemAlloced()
	Local mypixmap:TPixmap = LoadPixmap(filename)
	GCCollect()
	Print "Post pixmap " + GCMemAlloced()
End Function

and pixmap=null

Graphics 640 , 480
GCSetMode 2
GCCollect()
Print "Before we start " + GCMemAlloced()
'extract_colours("max.png")
Local mypixmap:TPixmap=LoadPixmap("max.png")
GCCollect()
Print "Pixmap alloc " + GCMemAlloced()
mypixmap = Null
GCCollect()
Print "Pixmap nulled " + GCMemAlloced()

<Edit> You do know that Bmax has auto-garbage collection... don't you?"

Abomination

(Posted 2006) [#5]

Thank You CS_TBL!
Thank You FlameDuck?
[edit]
Thank You tonyg!
Yes, I knew about auto-garbageCollection, but I gues I didn't understand most of it.
[edit again]
Plus! Some explanations in Help are outdated or ? Because f.e. in some example by Mark himself (Keyword Release) he uses the function MemAlloced(), wich is not a BMax-function (anymore???). Stuff like that is rather confusing...

CS_TBL

(Posted 2006) [#6]

yes yes, the manual.. pull a number and join the line please. :P