Use multi-media library bass. DLL to play MP3 [6]-whether to play it cyclically

In this example:

Code File:

Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, classes, extctrls; Type tform1 = Class (tform) opendialog1: topendialog; button1: tbutton; button2: tbutton; button3: tbutton; checkbox1: tcheckbox; Procedure upload (Sender: tobject); Procedure button2click (Sender: tobject ); procedure button3click (Sender: tobject); Procedure formdestroy (Sender: tobject); Procedure checkbox1click (Sender: tobject); end; var form1: tform1; implementation {$ R *. DFM} uses bass; var HS: hstream; {stream handle} procedure tform1.formcreate (Sender: tobject); begin checkbox1.caption: = 'loop play'; If hiword (bass_getversion) bassversion then MessageBox (0, '"Bass. the DLL file version is not suitable! ', Nil, mb_iconerror); if not bass_init (-1, 44100, 0, 0, nil) Then showmessage ('initialization error'); end; {open} procedure tform1.button1click (Sender: tobject); var mp3path: ansistring; begin bass_streamfree (HS); opendialog1.filter: = 'mp3 file (*. MP3) | *. MP3 | WAV file (*. wav) | * WAV '; If opendialog1.execute then mp3path: = ansistring (opendialog1.filename); HS: = bass_streamcreatefile (false, pansichar (mp3path), 0, 0, 0 ); {establish a playback stream like the following, which is directly loop playback} // HS: = bass_streamcreatefile (false, pansichar (mp3path), 0, 0, bass_sample_loop); if hs

Form file:

Object form1: tform1 left = 0 Top = 0 caption = 'form1' clientheight = 90 clientwidth = 207 color = clbtnface font. charset = default_charset font. color = clwindowtext font. height =-11 font. name = 'tahoma 'font. style = [] oldcreateorder = false oncreate = formcreate ondestroy = formdestroy pixelsperinch = 96 textheight = 13 object button1: tbutton left = 25 top = 17 width = 75 Height = 25 caption = #25171 #24320 taborder = 0 onclick = button1click end object button2: tbutton left = 25 top = 48 width = 75 Height = 25 caption = #25773 #25918 taborder = 1 onclick = button2click end object button3: tbutton left = 106 Top = 17 width = 75 Height = 25 caption = #26242 #20572 taborder = 2 onclick = button3click end object checkbox1: tcheckbox left = 110 Top = 52 width = 97 Height = 17 caption = 'checkbox1' taborder = 3 onclick = checkbox1click end object opendialog1: topendialog left = 192 Top = 8 endend