VC + + Simple Operation MP3 Music method, summary

#include <windows.h>#include<stdio.h>#include<mmsystem.h>#include<shellapi.h>#include<afxcom_. H>#pragmaComment (lib, "Winmm.lib")voidMain () {Charstr[ -]={0};inti =0; Charbuf[ -]={0}; Mci_open_parms Mciopen; Mcierror Mcierror; Mciopen.lpstrdevicetype="MPEGVideo"; Mciopen.lpstrelementname="C://1.mp3"; Mcierror= Mcisendcommand (0, Mci_open,mci_open_type | Mci_open_element, (DWORD) &Mciopen); if(mcierror) {mcigeterrorstring (Mcierror,buf, -); printf ("%s/n", BUF); GotoError;} UINT DeviceID=Mciopen.wdeviceid;  Mci_play_parms Mciplay; Mcierror= Mcisendcommand (Deviceid,mci_play,0, (DWORD) &mciplay); if(mcierror) {printf ("send Mci_play command failed/n"); GotoError;}//winexec ("Sndvol32.exe", SW_SHOWNORMAL);//This can turn on the volume control but can be programmed to implement.    while(1) {sprintf (str,"play time:/t%d", i); printf ("%s/r", str); I++; Sleep ( +); }error:system ("Pause"); }

Play MP3 with MCI
Main variable definition

Mci_open_parms Mciopen; Mcierror Mcierror; Mci_status_parms mcistatusparms; WORD M_wdeviceid;

Only the Mcisendcommand command is introduced here.

0. Turn on the device

= Mcisendcommand (0, Mci_open,mci_open_type | Mci_open_element, (DWORD) &

After the device is turned on, the ID of the device is acquired, and all subsequent operations must use this ID number, namely:

UINT DeviceID = Mciopen.wdeviceid;

1. Play

" MPEGVideo "  =fileName.  GetString ();     = Mcisendcommand (M_wdeviceid,mci_play,0 , (DWORD) &mciplay);

The M_wdeviceid here is the device ID that gets when the device is turned on

2. Pause

Mcisendcommand (Mciopen.wdeviceid,mci_pause,null, NULL);

3. Stop

Mcisendcommand (Mciopen.wdeviceid,mci_stop,null, NULL); Mcisendcommand (mciopen.wdeviceid,mci_seek,mci_seek_to_ START, NULL);

4. Get Playback Progress

mcistatusparms.dwitem=mci_status_position;    Mcisendcommand (m_wdeviceid,mci_status,mci_wait| Mci_status_item, (DWORD) (LPVOID) &mcistatusparms); // key, get position    int M_dposition=mcistatusparms.dwreturn;

5. Length of time to get the entire audio

UINT DeviceID = Mciopen.wdeviceid; Mcistatusparms.dwitem=mci_status_length;  Mcisendcommand (deviceid,mci_status,mci_wait| Mci_status_item, (DWORD) (LPVOID) &mcistatusparms); // key, get length     M_dlength=mcistatusparms.dwreturn;

6. Play in the specified position

mci_play_parms mciplay; mciplay.dwfrom=Mcisendcommand (M_wdeviceid,mci_play,mci_from, (DWORD) &mciplay);

7. Control the volume

mci_dgv_setaudio_parms Mcisetaudiopara;   =//Here is the value of theVolume (0--1000)  mcisendcommand (M_wdeviceid, Mci_setaudio, Mci_dgv_setaudio_value | Mci_dgv_setaudio_item, (DWORD) (LPVOID) &mcisetaudiopara);

VC + + Simple Operation MP3 Music method, summary