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Author
Topic: Player Music (Read 5363 times)
buiu
New member
Posts: 9
Player Music
«
on:
April 08, 2018, 07:16:48 pm »
I am Brazilian, and I am developing a music player in Lazarus, but it gives an error:
Code: Pascal
[Select]
[+]
[-]
unit
uMusica
;
{$mode objfpc}{$H+}
interface
uses
Classes
,
SysUtils
,
FileUtil
,
Forms
,
Controls
,
Graphics
,
Dialogs
,
Buttons
;
type
{ TForm1 }
TForm1
=
class
(
TForm
)
BitBtn1
:
TBitBtn
;
BitBtn2
:
TBitBtn
;
BitBtn3
:
TBitBtn
;
BitBtn4
:
TBitBtn
;
OpenDialog1
:
TOpenDialog
;
procedure
BitBtn1Click
(
Sender
:
TObject
)
;
procedure
BitBtn2Click
(
Sender
:
TObject
)
;
procedure
BitBtn3Click
(
Sender
:
TObject
)
;
procedure
BitBtn4Click
(
Sender
:
TObject
)
;
private
{ private declarations }
public
{ public declarations }
end
;
var
Form1
:
TForm1
;
Player
:
OleVariant
;
implementation
{$R *.lfm}
{ TForm1 }
procedure
TForm1
.
BitBtn1Click
(
Sender
:
TObject
)
;
begin
if
OpenDialog1
.
Execute
then
begin
Player
:
=
OleVariant
(
'vlc'
)
;
Player
.
url
:
=
Olevariant
(
UTF8Decode
(
OpenDialog1
.
FileName
)
)
;
end
;
end
;
procedure
TForm1
.
BitBtn2Click
(
Sender
:
TObject
)
;
begin
Player
.
Controls
.
Play
;
end
;
procedure
TForm1
.
BitBtn3Click
(
Sender
:
TObject
)
;
begin
Player
.
Controls
.
Pause
;
end
;
procedure
TForm1
.
BitBtn4Click
(
Sender
:
TObject
)
;
begin
Player
.
Controls
.
Stop
;
end
;
end
.
Project ProjetoMusica raised exception class 'External: SIGSEGV'.
Logged
Awkward
Full Member
Posts: 135
Re: Player Music
«
Reply #1 on:
April 08, 2018, 07:28:23 pm »
why you don't check what "Player" going valid after assignment?
Logged
buiu
New member
Posts: 9
Re: Player Music
«
Reply #2 on:
April 08, 2018, 07:37:04 pm »
I do not know how to do this, I'm a beginner.
Logged
buiu
New member
Posts: 9
Re: Player Music
«
Reply #3 on:
April 08, 2018, 07:48:32 pm »
Code: Pascal
[Select]
[+]
[-]
uses
Classes
,
SysUtils
,
FileUtil
,
Forms
,
Controls
,
Graphics
,
Dialogs
,
Buttons
,
ComObj
;
Code: Pascal
[Select]
[+]
[-]
procedure
TForm1
.
BitBtn1Click
(
Sender
:
TObject
)
;
begin
if
OpenDialog1
.
Execute
then
begin
Player
:
=
CreateOleObject
(
'vlc-player'
)
;
Player
.
url
:
=
Olevariant
(
UTF8Decode
(
OpenDialog1
.
FileName
)
)
;
end
;
end
;
umusica.pas(44,13) Error: Identifier not found "CreateOleObject"
Please, can someone help me?
«
Last Edit: April 08, 2018, 08:03:51 pm by buiu
»
Logged
soerensen3
Full Member
Posts: 213
Re: Player Music
«
Reply #4 on:
April 08, 2018, 09:04:07 pm »
Code: Pascal
[Select]
[+]
[-]
uses
ComObj
;
Add ComObj to your uses section.
Logged
Lazarus 1.9 with FPC 3.0.4
Target: Manjaro Linux 64 Bit (4.9.68-1-MANJARO)
buiu
New member
Posts: 9
Re: Player Music
«
Reply #5 on:
April 08, 2018, 09:46:46 pm »
utocadordemp3.pas(7,6) Fatal: Cannot find unit ComObj used by uTocadorDeMP3 of the Project Inspector.
Use Linux OpenMandriva LX3
Logged
soerensen3
Full Member
Posts: 213
Re: Player Music
«
Reply #6 on:
April 08, 2018, 10:35:01 pm »
That's Windows only! See the unit is in the pascal sources under "packages/winunits-base/src".
https://github.com/graemeg/freepascal/blob/master/packages/winunits-base/src/comobj.pp
Maybe that helps:
http://wiki.freepascal.org/Video_Playback_Libraries
Logged
Lazarus 1.9 with FPC 3.0.4
Target: Manjaro Linux 64 Bit (4.9.68-1-MANJARO)
metis
Sr. Member
Posts: 300
Re: Player Music
«
Reply #7 on:
April 09, 2018, 04:45:26 pm »
@buiu
Obviously, You want to make a VLC-Player (= Audio & Video).
-> Why don't You use the Components, that come with Lazarus ?
Package:
lazvlc
: TLCLVLCPlayer, TVLCMediaListPlayer.
For Audio, only, see here:
http://wiki.freepascal.org/Multimedia_Programming
-> GoTo: "Playing Sounds"
«
Last Edit: April 09, 2018, 04:47:03 pm by metis
»
Logged
Life could be so easy, if there weren't those f*** Details.
My FFmpeg4Lazarus =
FFPlay4Laz
+
FFGrab4Laz
+ FFInfo4Laz
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