Yes, It is possible to have ImageMap inside the CallbackPanel. For this we have to enable the callback through the HotSpot of the ImageMap. Please refer the below code snippet which illustrates this:
foreach( HotSpot hotspot in RegionMap.HotSpots )
For Each hotspot As HotSpot In RegionMap.HotSpots
Please refer the sample from the below link which illustrates this:
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