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The joyGetNumDevs function queries the joystick driver for the number of joysticks it supports.
Syntax
UINT joyGetNumDevs();
Return value
The joyGetNumDevs function returns the number of joysticks supported by the current driver or zero if no driver is installed.
Remarks
Use the joyGetPos function to determine whether a given joystick is physically attached to the system. If the specified joystick is not connected, joyGetPos returns a JOYERR_UNPLUGGED error value.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | joystickapi.h (include Windows.h) |
| Library | Winmm.lib |
| DLL | Winmm.dll |