primitive
Bagus Mahawan
iwan at a-vip.com
Thu Jan 23 01:41:46 UTC 2003
Hi,
I'm trying to show an image read from the file to squeak's window, like
below:
aForm _ ImageReadWriter formFromFileNamed: 'foo.jpg'.
aForm displayAt: 0 at 0.
but instead of using displayAt method (or displayOn:... etc), I want to let
a primitive to do the stuff, i.e., a primitive that acts like displayAt:
method.
The goal is to replace the above code like the following:
aForm _ ImageReadWriter formFromFileNamed: 'foo.jpg'.
aForm doIt.
where doIt: is a method of Form class defined as:
doIt
<primitive: 'writeToSqueakDisp' module: 'Foo'>
^self primitiveFailed
Is it possible to implement a primitive that can manipulate pixels inside
squeak's window ? so that you can change the background image of the
squeak's window, for example.
Any help is greatly appreciated.
Regards,
Iwan
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