All card readers register in Windows several drives depending on how many card bays have.
Here is a picture of my card reader in order to settle what we are talking about:
https://www.amazon.com/Kingston-Digital ... B00VAGX6MW
(Very good model but nothing special in our discussion.)
However, while Windows Explorer detects the change, XnView MP does not.
How WinExplorer works?
When someone inserts a card then the MediaInserted Win OS event is triggered. The application must register itself via SHChangeNotifyRegister function (https://msdn.microsoft.com/en-us/library/bb762120(VS.85).aspx) in order to receive these events.
If the card is pulled out then the MediaRemoved event is triggered.
At the end, the application should de-register itself from the event chain by using SHChangeNotifyDeregister function.
A nice overview of the above steps is outlined at http://stackoverflow.com/questions/2420 ... s-messages
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