https://github.com/jrincayc/ucblogo-code
Revision ad2aafdb76721bf7ee061407f6a92e005841f163 authored by Joshua Cogliati on 28 June 2022, 01:19:29 UTC, committed by GitHub on 28 June 2022, 01:19:29 UTC
ISSUE-134: Fixed issue with LOADPICT if it's called before other turtle commands
Tip revision: ad2aafdb76721bf7ee061407f6a92e005841f163 authored by Joshua Cogliati on 28 June 2022, 01:19:29 UTC
Merge pull request #135 from dmalec/ISSUE-134
Merge pull request #135 from dmalec/ISSUE-134
Tip revision: ad2aafd
buttonact
BUTTONACT (variable)
if nonempty, should be an instruction list that will be evaluated
whenever a mouse button is pressed. Note that the user may have
released the button before the instructions are evaluated. BUTTON
will still output which button was most recently pressed. CLICKPOS
will output the position of the mouse cursor at the moment the
button was pressed; this may be different from MOUSEPOS if the
user moves the mouse after clicking.
Note that it's possible for the user to press a button during the
evaluation of the instruction list. If this would confuse your
program, prevent it by temporarily setting BUTTONACT to the empty
list. One easy way to do that is the following:
make "buttonact [button.action]
to button.action [:buttonact []]
... ; whatever you want the button to do
end
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