C#
VB
C++
Gets or sets the Convert control's preview state.
public virtual bool Preview { get; set; }
Public Overridable Property Preview As Boolean
true if Preview is enabled: otherwise it is false.
The default value is false. If the property fails, an error is raised. For more information, refer to the Error Codes.
Note: When setting this property, the convert control must be in the stopped state.
using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;
public bool _result = false;
public ConvertCtrlForm _form = new ConvertCtrlForm();
public void HasDialogExample()
{
// reference the convert control
ConvertCtrl convertctrl = _form.ConvertCtrl;
// input and output files
string inFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi");
string outFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_HasDialogExample.avi");
try
{
// set the source for conversion
convertctrl.SourceFile = inFile;
// set the video and audio compressors
convertctrl.VideoCompressors.Mpeg2.Selected = true;
convertctrl.AudioCompressors.AC3.Selected = true;
// set the target output file and format
convertctrl.TargetFile = outFile;
// set the target output format
convertctrl.TargetFormat = TargetFormatType.AVI;
// The HasDialog method tells us that the control
// can display the desired settings dialog.
// check to see if the convert source dialog is available
if (convertctrl.HasDialog(ConvertDlg.TargetFormat))
{
// now show it
convertctrl.ShowDialog(ConvertDlg.TargetFormat, _form);
_result = true;
}
// enable preview
convertctrl.Preview = true;
// set preview visible
convertctrl.PreviewVisible = true;
// start the capture process
convertctrl.StartConvert();
// we'll loop on the state and pump messages for this example.
// but you should not need to if running from a Windows Forms application.
while (convertctrl.State == ConvertState.Running)
Application.DoEvents();
// see if there was an error
if (convertctrl.ConvertError != 0)
{
// set the result to false
_result = false;
}
}
catch (Exception)
{
_result = false;
}
}
static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media";
}
Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures
Public _result As Boolean = False
Public _form As ConvertCtrlForm = New ConvertCtrlForm()
Public Sub HasDialogExample()
' reference the convert control
Dim convertctrl As ConvertCtrl = _form.ConvertCtrl
' input and output files
Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi")
Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_HasDialogExample.avi")
Try
' set the source for conversion
convertctrl.SourceFile = inFile
' set the video and audio compressors
convertctrl.VideoCompressors.Mpeg2.Selected = True
convertctrl.AudioCompressors.AC3.Selected = True
' set the target output file and format
convertctrl.TargetFile = outFile
' set the target output format
convertctrl.TargetFormat = TargetFormatType.AVI
' The HasDialog method tells us that the control
' can display the desired settings dialog.
' check to see if the convert source dialog is available
If convertctrl.HasDialog(ConvertDlg.TargetFormat) Then
' now show it
convertctrl.ShowDialog(ConvertDlg.TargetFormat, _form)
_result = True
End If
' enable preview
convertctrl.Preview = True
' set preview visible
convertctrl.PreviewVisible = True
' start the capture process
convertctrl.StartConvert()
' we'll loop on the state and pump messages for this example.
' but you should not need to if running from a Windows Forms application.
Do While convertctrl.State = ConvertState.Running
Application.DoEvents()
Loop
' see if there was an error
If convertctrl.ConvertError <> 0 Then
' set the result to false
_result = False
End If
Catch e1 As Exception
_result = False
End Try
End Sub
Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"
End Class
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