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Detecting CD Changes

Posted on 1998-05-26
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Last Modified: 2013-11-20
Hi .. right now programming an API which playing CD through MCI device in C++ (using MFC)
Two questions in one :

-How could i detected the CD has been manually ejected , or inserted ? (i need a full source description please)
-What is the xorrect sentence to the mciCommandMsg to Ecjet a CD Track ?

Hope to catch an answer ASAP

Greetings .. Skiwoka
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Question by:SkizoWalker
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4 Comments
 
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tma050898 earned 100 total points
ID: 1315483
Answer coming
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Expert Comment

by:tma050898
ID: 1315484
SkizoWalker,

In order to open and close the cd drawer...

Step 1:
add include of "mmsystem.h"

Step 2:
add import library
winmm.lib

Step 3:
add following code

MCI_OPEN_PARMS OpenParms;
OpenParms.lpstrDeviceType = (LPCSTR) MCI_DEVTYPE_CD_AUDIO;
OpenParms.wDeviceID = 0;

// open device
if (!mciSendCommand (NULL, MCI_OPEN, MCI_WAIT |
 MCI_OPEN_TYPE | MCI_OPEN_TYPE_ID | MCI_OPEN_SHAREABLE,
 (DWORD)(LPVOID) &OpenParms))
{
 // open drawer
 mciSendCommand (OpenParms.wDeviceID,
  MCI_SET, MCI_SET_DOOR_OPEN, NULL);

 AfxMessageBox(_T("Press OK to close the CD drawer"));

 // close drawer
 mciSendCommand (OpenParms.wDeviceID,
  MCI_SET, MCI_SET_DOOR_CLOSED, NULL);

 // close device
 mciSendCommand (OpenParms.wDeviceID,
  MCI_CLOSE, MCI_WAIT, NULL);
}

I don't know, however, how to detect when the cd drawer has been opened manually.

Tom

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LVL 23

Expert Comment

by:chensu
ID: 1315485
HOWTO: Getting Notification of CD-ROM Insertion or Removal
http://support.microsoft.com/support/kb/articles/q163/5/03.asp
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Author Comment

by:SkizoWalker
ID: 1315486
okay thanx for all answer people
I have anyway find myselft the wayt to Open and close the CD drawer and to check CDRom insertion/Removal .. i just launch a SetTimer procedure of 1200 ms interval , while i check if i have an eror frommy mci device (if an error occured , so -> no disk present) and if no error , then get the new Track status
 
Anyway here are the points

thx also chensu

Greetings , Skiwoka
France

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