May I ask how to use canvas to draw a picture without affecting the hot spot click of the picture?

DWcanvas

there is an attempt to adjust the location of canvas and z-index to make him on the picture, but in this way, the hot area of the picture cannot be clicked.
want to create a canvas node after clicking in the hot area, but it seems that other hot spots cannot be clicked after creation.
I hope God can guide you, how can you let canvas draw on the picture without affecting the click of the hot area of the picture?

Mar.01,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b302da-2bcfd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b302da-2bcfd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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