Added some handler code for when no CD drive can be found

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13935 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/cdplayer/CDAudioDevice.cpp

@@ -16,7 +16,8 @@
 CDAudioDevice::CDAudioDevice(void)
 {
 	FindDrives("/dev/disk");
-	SetDrive(0);
+	if(CountDrives()>0)
+		SetDrive(0);
 }
 
 CDAudioDevice::~CDAudioDevice(void)

src/apps/cdplayer/CDPlayer.cpp

@@ -56,6 +56,16 @@ CDPlayer::CDPlayer(BRect frame, const char *name, uint32 resizeMask, uint32 flag
 	engine = new CDEngine;
 	
 	BuildGUI();
+	
+	CDAudioDevice cd;
+	if(cd.CountDrives()<1)
+	{
+		BAlert *alert = new BAlert("CDPlayer","It appears that there are no CD drives on your"
+									"computer or there is no system software to support one."
+									" Sorry.","OK");
+		alert->Go();
+		be_app->PostMessage(B_QUIT_REQUESTED);
+	}
 }
 
 CDPlayer::~CDPlayer()