Void CMFCmusicDlg: : OnBnClickedPleyer () 
{
//TODO: add the control notification handler code 
If (aa=="") 
{
OnBnClickedOpen (); 
} 
The else 
{
If (m_flag & amp; & Aa!="") 
{
M_flag=false; 
The MCI_OPEN_PARMS McIopenparms;//open the file 
MCI_VD_PLAY_PARMS McIplayparms;//play 
/* cstrings aa; */
McIopenparms. LpstrElementName=aa;//play path 
McIopenparms. LpstrDeviceType=NULL;//file type 


//that the operating system to send commands to the MCI news broadcast 
McISendCommand (0, MCI_OPEN, MCI_DEVTYPE_WAVEFORM_AUDIO, (DWORD) (LPVOID) & amp; McIopenparms); 
M_count=McIopenparms. WDeviceID;//statistical device ID 
McIplayparms. DwCallback=(DWORD) GetSafeHwnd (); 
Cdlen=getinfo (MCI_STATUS_LENGTH);//get the length of the song 
Cdto=MCI_MAKE_HMS (MCI_HMS_HOUR (cdlen), MCI_HMS_MINUTE (cdlen), MCI_HMS_SECOND (cdlen)); 
McIplayparms. DwFrom=cdfrom; 
McIplayparms. DwTo=cdto; 


The McISendCommand (m_count MCI_PLAY, MCI_TO | MCI_FROM, (DWORD) (LPVOID) & amp; McIplayparms); 
M_sl. SetRange (0, cdlen); 
The SetTimer (0, 1000, NULL); 
The UpdateData (false); 
} 
The else 
{
M_flag=true; 
KillTimer (0); 
DWORD DWSF=getinfo (MCI_STATUS_POSITION); 
Cdfrom=MCI_MAKE_MSF (MCI_MSF_MINUTE (DWSF), MCI_MSF_SECOND (DWSF), MCI_MSF_FRAME (DWSF)); 
McISendCommand (m_count MCI_CLOSE, 0, NULL); 
M_count=0; 

} 
} 
} 

CodePudding user response: