ImGearRecProgressEventHandler Delegate

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Delegate Sub ImGearRecProgressEventHandler( _
   ByVal sender As Object, _
   ByVal e As ImGearRecProgressEventArgs _
)

'Usage
 
Dim instance As New ImGearRecProgressEventHandler(AddressOf HandlerMethod)

public delegate void ImGearRecProgressEventHandler( 
   object sender,
   ImGearRecProgressEventArgs e
)

public: __gc __delegate void ImGearRecProgressEventHandler( 
   Object* sender,
   ImGearRecProgressEventArgs* e
)

public delegate void ImGearRecProgressEventHandler( 
   Object^ sender,
   ImGearRecProgressEventArgs^ e
)

Parameters

sender: Event sender (ImGearRecognition object).
e: ImGearRecProgressEventArgs value.

It follows the standard .NET event model. The ImGearRecognition.Progress event occurs during recognition processes. It indicates which recognition process is being performed, its percent completion, and gives the application a means of aborting the current recognition process.

Here’s an example of typical ImGearRecognition.Progress event registration and declaration:

C#
Visual Basic

public delegate void UpdateProgressBarDelegate(ImGearRecProgressEventArgs e);
UpdateProgressBarDelegate progressDelegate = null;

void UpdateProgressBar(ImGearRecProgressEventArgs e)
{
    if (e.Percent < 100)
        toolStripStatusProgress.Text = e.Process + " - " + e.Percent + "%";
    else
        toolStripStatusProgress.Text = "Ready";
    this.Update();
}

private void recProgress(object sender, ImGearRecProgressEventArgs e)
{
    if(this.InvokeRequired)
    {
        object[] arg = new object[1];
        arg[0] = e;
        this.Invoke(progressDelegate, arg);
    }
    else
    {
        UpdateProgressBar(e);
    }
}

Public Delegate Sub UpdateProgressBarDelegate(ByVal e As ImGearRecProgressEventArgs)
Public progressDelegate As UpdateProgressBarDelegate

Sub UpdateProgressBar(ByVal e As ImGearRecProgressEventArgs)
    If e.Percent < 100 Then
        toolStripStatusProgress.Text = e.Process.ToString() + " - " + e.Percent.ToString() + "%"
    Else
        toolStripStatusProgress.Text = "Ready"
    End If
    Me.Update()
End Sub

Private Sub recProgress(ByVal sender As Object, ByVal e As ImGearRecProgressEventArgs)
    If Me.InvokeRequired Then
        Dim arg As Object() = New Object(0) {}
        arg(0) = e
        Me.Invoke(progressDelegate, arg)
    Else
        UpdateProgressBar(e)
    End If
End Sub

Reference

ImGearRecProgressEventHandler Members
ImageGear.Recognition Namespace
ImGearRecProgressEventArgs Class