Using joyGetPosEx fails when switching joystick USB port

I am using the "joyGetPosEx" function to detect the joystick inputs:

JOYINFOEX joyInfoEx;
ZeroMemory(&joyInfoEx, sizeof(joyInfoEx));
joyInfoEx.dwSize = sizeof(joyInfoEx);
// poll for values
joyGetPosEx(JOYSTICKID1, &joyInfoEx);

When the joystick is connected, every thing is working fine and the function returns "JOYERR_NOERROR".

However, if during the program run, i disconnect the joystick and connect it to a different US开发者_运维百科B port, the "joyGetPosEx(JOYSTICKID1, &joyInfoEx);" keeps returning a "JOYERR_UNPLUGGED" value.

If i reconnect the device to the initial USB port, it srtarts working again.

Does any one know how to make the joystick work even if it gets connected to a new port?

Thanks in advance!

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I'd say you have a USB device with no serial number, so Windows identifies it by where it's plugged in. Does it start acting as JOYSTICKID2 by any chance?

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We eventually discovered that the joyConfigChanged function is able to reconnect the joystick. [MSDN says that #include <dinput.h> is necessary to use this function, as it turns out, the order of includes is important: mmsystem.h first, then dinput.h.