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https://github.com/irmen/prog8.git
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50 lines
1.5 KiB
Lua
50 lines
1.5 KiB
Lua
%import textio
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%zeropage basicsafe
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%option no_sysinit
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; The documentation for custom key handlers can be found here:
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; https://github.com/X16Community/x16-docs/blob/101759f3bfa5e6cce4e8c5a0b67cb0f2f1c6341e/X16%20Reference%20-%2003%20-%20Editor.md#custom-keyboard-keynum-code-handler
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main {
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bool stop_program = false
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sub start() {
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txt.print("custom key handler test - press keys! esc to quit!\n")
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sys.set_irqd()
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uword old_keyhdl = cx16.KEYHDL
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cx16.KEYHDL = &keyboard_handler
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sys.clear_irqd()
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while not stop_program {
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; wait
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}
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sys.set_irqd()
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cx16.KEYHDL = old_keyhdl
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sys.clear_irqd()
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}
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sub keyboard_handler(ubyte keynum) -> ubyte {
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; NOTE: this handler routine expects the keynum in A and return value in A
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; which is thankfully how prog8 translates this subroutine's calling convention.
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; NOTE: it may be better to store the keynum somewhere else and let the main program
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; loop figure out what to do with it, rather than putting it all in the handler routine
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txt.print_ubhex(keynum, true)
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txt.spc()
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if keynum & $80 !=0
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txt.chrout('u')
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else
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txt.chrout('d')
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txt.nl()
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if keynum==$6e {
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; escape stops the program
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main.stop_program = true
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}
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return 0 ; By returning 0 (in A) we will eat this key event. Return the original keynum value to pass it through.
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}
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}
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