Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Edit Play List

Posted on 1998-09-22
8
Medium Priority
?
162 Views
Last Modified: 2010-04-06
How could I make the cd play the tracks in the order i tell it to. When one track is done playing, it should go on to the next track in a string of number or something
0
Comment
Question by:spat
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
8 Comments
 

Expert Comment

by:9pep
ID: 1340593
I really don't know.
0
 
LVL 10

Expert Comment

by:viktornet
ID: 1340594
HeLlO yOu TwO! jUsT wOnDeRiNg WhY aRe YoU pLaYiNg TrIcKs On EaCh OtHeR???

ReGaRdS,
ViKtOr IvAnOv
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 2

Accepted Solution

by:
333 earned 160 total points
ID: 1340596
Hi,
I did it this way:
Let's say MP is TMediaPlayer, NowPlaying is track number, EndPosition is end position of track, track list is in ListBox1 (track list is just tracks numbers, i.e 01,02,03), CurTrack is track list's index, CDTimer is TTimer (interval=100).
.
{Set positions and track number for first track in a ListBox1}
CurTrack:=0;
NowPlaying:=strtoint(ListBox1.Items[CurTrack]);
MP.Position:=MP.TrackPosition[NowPlaying];
EndPosition:=MP.TrackPosition[NowPlaying]+MP.TrackLength[NowPlaying];
.
procedure TForm1.CDTimerTimer(Sender: TObject);
begin
  if MP.Position>=EndPosition then begin
    CDTimer.Enabled:=false;
    if MP.Mode=mpPlaying then MP.Pause;
    inc(CurTrack);
    NowPlaying:=strtoint(ListBox1.Items[CurTrack]);
    MP.Position:=MP.TrackPosition[NowPlaying];
    EndPosition:=MP.TrackPosition[NowPlaying]+MP.TrackLength[NowPlaying];
    if MP.Mode=mpPaused then MP.Resume;
    CDTimer.Enabled:=true;
  end;
end;

A.
0
 

Author Comment

by:spat
ID: 1340597
I almost got your code to work but it play about the first second and then stops.
what do think i should do?
0
 
LVL 2

Expert Comment

by:333
ID: 1340598
Set MP.TimeFormat to tfMilliseconds.
0
 

Author Comment

by:spat
ID: 1340599
it seems to work now but when you change tracks, it stops and you have to press play again.
0
 
LVL 2

Expert Comment

by:333
ID: 1340600
The problem is with this line:

if MP.Mode=mpPaused then MP.Resume;

The point is, that when you call MP.Pause, MP.Mode sets to mpStopped, not mpPaused.
You must add some variable (i.e PlayPressed:boolean), that indicates that Play button was pressed by user. Set PlayPressed to true, when user presses Play button. Set PlayPressed to false, when user presses Stop button. Then change the line to

if (MP.Mode=mpStopped) and PlayPressed then MP.Resume;

A.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
Suggested Courses

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question