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Midi piano roll control

Jun 24, 2016 at 9:58 AM
Guys im trying to implement the piano roll control as mark guided in his blog. But a null reference exception is thrown in the midi events class.

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can someone please explain what's wrong
Jun 25, 2016 at 4:47 PM
well either notecanvas or notecanvas.children is likely to be null. Use the debugger to find out which.
Jun 28, 2016 at 5:46 PM
Thanks mark .. :) it's working now