You may find the following mnemonic helpful in remembering the codes:
Bonny Babies Really Make Good Children, You Wonder
In the high resolution mode each colour can be selected by one of two codes. You will see later how a
startling range of colour and stipple (texture) effects can be produced if you have a good quality
colour monitor.
Some of the screen presentation keywords are as follows:
draw border at edge of screen or window
BLOCK width, height, across, down, colour
colour a rectangle which has its top left
hand corner at position across, down
SCREEN ORGANISATION
When you switch on your QL the screen display is split into three areas called windows as shown
below. Note that in order to fit these windows into the area covered by a television screen, some
pixels around the border are not used in Television mode.
The windows are identified by #0, #1 and #2 so that you can relate various effects to particular
windows. For example:
CLS
will clear window #1 (the system chooses) so if you want the left hand area cleared you must type:
CLS #2
If you want a different paper (background colour) type for green:
PAPER 4 : CLS
or
PAPER #2,4 : CLS #2
If you want to clear window #2 to the background colour green.
To Next Page
Loading...
Need help?
General
