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Getting the Driver Capabilities
The following example uses joyGetNumDevs and joyGetPos to determine whether the joystick services are available and if a joystick is
attached to one of the ports.
JOYINFO joyinfo;
UINT wNumDevs, wDeviceID;
BOOL bDev1Attached, bDev2Attached;
if((wNumDevs = joyGetNumDevs()) == 0)
return ERR_NODRIVER;
bDev1Attached = joyGetPos(JOYSTICKID1,&joyinfo) != JOYERR_UNPLUGGED;
bDev2Attached = wNumDevs == 2 && joyGetPos(JOYSTICKID2,&joyinfo) !=
JOYERR_UNPLUGGED;
if(bDev1Attached || bDev2Attached) // decide which joystick to use
wDeviceID = bDev1Attached ? JOYSTICKID1 : JOYSTICKID2;
else
return ERR_NODEVICE;
Related Links
Software for Delphi and C++ Builder developers
Software for Visual Studio .NET developers
Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET
More Online Helps
Win32 Programmer's Reference (win32.hlp)
OLE Programmer's Reference (ole.hlp)
Microsoft Windows Pen API Programmer's Reference (penapi.hlp)
Microsoft Windows Sockets 2 Reference (sock2.hlp)
Microsoft Windows Telephony API (TAPI) Programmer's Reference (tapi.hlp)
Unix Manual Pages
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