API函数中waveInOpen返回的错误是4,请问这是什么错误?我该到哪里去查?

Question

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_waveinopen.asp

Answer 1

谢谢,MSDN我也装了，可是4对应的是哪个错误信息呢?

Answer 2

MMSYSERR_NOERROR        0             
MMSYSERR_ERROR          1             
MMSYSERR_BADDEVICEID    2             
MMSYSERR_NOTENABLED     3             
MMSYSERR_ALLOCATED      4             
MMSYSERR_INVALHANDLE    5             
MMSYSERR_NODRIVER       6             
MMSYSERR_NOMEM          7             
MMSYSERR_NOTSUPPORTED   8             
MMSYSERR_NOMAP          7             
                                      
MIDIERR_UNPREPARED      64            
MIDIERR_STILLPLAYING    65            
MIDIERR_NOTREADY        66            
MIDIERR_NODEVICE        67            
                                      
WAVERR_BADFORMAT        32            
WAVERR_STILLPLAYING     33            
WAVERR_UNPREPARED       34            
WAVERR_SYNC             35            
                                      
MAXERRORLENGTH          128           MMSYSERR_NOERROR        0             
MMSYSERR_ERROR          1                 
MMSYSERR_BADDEVICEID    2                 
MMSYSERR_NOTENABLED     3                 
MMSYSERR_ALLOCATED      4                 
MMSYSERR_INVALHANDLE    5                 
MMSYSERR_NODRIVER       6                 
MMSYSERR_NOMEM          7                 
MMSYSERR_NOTSUPPORTED   8                 
MMSYSERR_NOMAP          7                 
                                          
MIDIERR_UNPREPARED      64                
MIDIERR_STILLPLAYING    65                
MIDIERR_NOTREADY        66                
MIDIERR_NODEVICE        67                
                                          
WAVERR_BADFORMAT        32                
WAVERR_STILLPLAYING     33                
WAVERR_UNPREPARED       34                
WAVERR_SYNC             35                
                                          
MAXERRORLENGTH          128

Answer 3

参考
http://bochs.sourceforge.net/cgi-bin/lxr/diff/iodev/soundwin.h?diffvar=v;diffval=2.0.2

Answer 4

太谢谢了，其实我的问题里主要是waveInOpen函数里的设备号填了0以后就出这个问题，这样看来是这个设备已经被分配的缘故..我这里0应该是MODEM这个设备号吧,为什么MODEM这个设备会被分配呢?
(如果设备号填1的时候是没有问题的，可以实现声卡上的录音)请指点一下,谢谢!!