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FSX Is the value of WM_USER_SIMCONNECT fixed?

lordofwings

lordofwings

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I see a constant WM_USER_SIMCONNECT with value 0x0402 in all the examples. I was wondering if that value that is NOT defined in SimConnect itself has to have that particular value? or can I choose any value I want?

Say, if I have two instances of SimConnect in the same application (don't question why!) should I have a WM_USER_SIMCONNECT with two different values so that DefWnd knows to which of the two instances the message has to be sent?
 
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