[EditorAttribute(System.Type, System.Type)]
public MidiRenderers MidiRenderers { get; }
public:
property MidiRenderers^ MidiRenderers {
MidiRenderers^ get();
}
A MidiRenderers collection object representing the available midi renderers.
Gets the registered audio renderers collection object. The MidiRenderers object is used to enumerate the available mide renderers, and to select a midi renderer for audio output.
using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;
public bool _result = false;
public PlayCtrlForm _form = new PlayCtrlForm();
public PlayCtrl _playctrl;
public TestCtrlSubForm _pcsbform;
public void MidiRenderersExample()
{
// reference the play control
_playctrl = _form.PlayCtrl;
// input file
string inFile = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_SourceVideoOnly.avi");
try
{
// create the sub form for renderers listbox
_pcsbform = new TestCtrlSubForm();
_pcsbform.Load += new EventHandler(Form_Load);
_pcsbform.buttonRefresh.Click += new EventHandler(Refresh_Click);
_pcsbform.List.Click += new EventHandler(List_Click);
// set autostart to false
_playctrl.AutoStart = false;
// set our source media file
_playctrl.SourceFile = inFile;
// show the renderers form
_pcsbform.ShowDialog();
// get the selected renderer index
int selectedRenderer = _playctrl.MidiRenderers.Selection;
// set the result to what we expect
_result = (_pcsbform.List.SelectedItem != null && _playctrl.MidiRenderers.Selection != -1);
}
catch (Exception)
{
_result = false;
}
}
void Form_Load(object sender, EventArgs e)
{
// build the audio renderer list
EnumerateRenderers(_playctrl.MidiRenderers, _pcsbform.List);
}
void List_Click(object sender, EventArgs e)
{
// select the audio renderer
SelectRenderer(_playctrl.MidiRenderers, _pcsbform.List);
}
void Refresh_Click(object sender, EventArgs e)
{
// refresh audio renderers
RefreshRenderers(_playctrl.MidiRenderers, _pcsbform.List);
}
void EnumerateRenderers(MidiRenderers midiRenderers, ListBox List)
{
// Build the renderers list box
int Selected = -1;
// empty the list box
List.Items.Clear();
// add the available audio renderers to the list box
for (int i = 0; (i <= (midiRenderers.Count - 1)); i++)
{
List.Items.Add(midiRenderers[i]);
if (midiRenderers[i].Selected)
{
Selected = i;
}
}
// highlight the current selection
List.SelectedIndex = Selected;
}
void RefreshRenderers(MidiRenderers midiRenderers, ListBox List)
{
string SelectedName = string.Empty;
// save the currently selected renderer's name
if (midiRenderers.Selection >= 0)
SelectedName = midiRenderers[midiRenderers.Selection].FriendlyName;
// refresh the renderer collection
midiRenderers.Refresh();
// if there was a previously selected renderer, reselect it
if (SelectedName != string.Empty)
midiRenderers.Selection = midiRenderers.IndexOf(SelectedName);
// rebuild the listbox
EnumerateRenderers(midiRenderers, List);
}
void SelectRenderer(MidiRenderers midiRenderers, ListBox List)
{
// select the highlighted renderer
midiRenderers.Selection = midiRenderers.IndexOf(List.Items[List.SelectedIndex] as Renderer);
}
static class LEAD_VARS
{
public const string MediaDir = @"C:\LEADTOOLS23\Media";
}
Help Collections
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