Creating a Basic LEADTOOLS Multimedia Convert Application

Take the following steps to create and run a multimedia convert application using the LEADTOOLS Multimedia ConvertCtrl control.

Start Visual Studio .NET.
Choose File->New->Project... from the menu.
In the New Project dialog box, choose either "Visual C# Projects" or "Visual Basic Projects" in the Projects Type List, and choose "Windows Application " in the Templates List.
Type the project name as "Multimedia Convert" in the Project Name field, and then choose OK. If desired, type a new location for your project or select a directory using the Browse button, and then choose OK.
In the "Solution Explorer" window, right-click on the "References" folder, and select "Add Reference..." from the context menu. In the "Add Reference" dialog box, select the ".NET" tab and select Leadtools.Multimedia and click OK. If this dll does not appear under the .NET tab, you will need select the Browse tab and add it from the "<LEADTOOLS_INSTALLDIR>\Bin\DotNet\Win32 " folder, by selecting the following DLL:
- Leadtools.Multimedia.dll
After browsing, click the Select button and then press the OK button to add the above DLL to the application.

Make sure Form1 is in design view. Go to the toolbox (View->Toolbox) and drag and drop a ConvertCtrl control on the form. NOTE: If you do not have ConvertCtrl in your toolbox, select Tools->Choose Toolbox Items from the menu. Click Browse and then select Leadtools.Multimedia.dll from "<LEADTOOLS_INSTALLDIR>\Bin\DotNet\Win32" and then click Open and then click OK. After adding it to the form, set the following properties on the convert control:

Property	Value
Name	_convertctrl
Anchor	Top, Bottom, Left, Right
BackColor	Black

Go to the toolbox (View->Toolbox) and drag and drop a ProgressBar control on the form (below the convert control) and set the following properties:

Property	Value
Name	_progress
Anchor	Bottom, Left, Right
Step	1

Go to the toolbox (View->Toolbox) and drag and drop a Button control to the bottom of the form and set the following properties:

Property	Value
Name	_buttonConvert
Text	Convert
Anchor	Bottom, Right

Switch Form1 to code view (right-click Form1 in the solution explorer then select View Code) and add the following lines at the beginning of the file:
[Visual Basic]
```
            Imports Leadtools.Multimedia
            
```
[C#]
```
            using Leadtools.Multimedia;
            
```

Declare the following private variable:

[Visual Basic]

            Private _sourceFile As String
            Private _targetFile As String

[C#]

            private string _sourceFile;
            private string _targetFile;

Add an event handler to the Form1 Load event and code it as follows:

[Visual Basic]

            Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
               _sourceFile = @"<LEADTOOLS_INSTALLDIR>\Media\DaDa_DVD_MPEG2.mpg"
               _targetFile = "DaDa_MJPEG.avi"
            End Sub

[C#]

            private void Form1_Load(object sender, System.EventArgs e)
            {
               _sourceFile = @"<LEADTOOLS_INSTALLDIR>\Media\DaDa_DVD_MPEG2.mpg";
               _targetFile = "DaDa_MJPEG.avi";
            }

Add an event handler to the _convertctrl Progress event and code it as follows:

[Visual Basic]

            Private Sub _convertctrl_Progress(ByVal sender As System.Object, ByVal e As ProgressEventArgs) Handles _convertctrl.Progress
               _progress.Value = CInt((_progress.Maximum * e.percent / 100))
            End Sub

[C#]

            private void _convertctrl_Progress(object sender, ProgressEventArgs e)
            {
               _progress.Value = (int)(_progress.Maximum * e.percent / 100);
            }

Add an event handler to the _convertctrl Complete event and code it as follows:

[Visual Basic]

            Private Sub _convertctrl_Complete(ByVal sender As System.Object, ByVal e As EventArgs) Handles _convertctrl.Complete
               MessageBox.Show("Conversion Complete")
               _buttonConvert.Enabled = True
            End Sub

[C#]

            private void _convertctrl_Complete(object sender, EventArgs e)
            {
               MessageBox.Show("Conversion Complete");
               _buttonConvert.Enabled = true;
            }

Add an event handler to the _buttonConvert Click event and code it as follows:

[Visual Basic]

            Private Sub _buttonConvert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles _buttonConvert.Click
               Try
                  _convertctrl.Preview = True
                  _convertctrl.SourceFile = _sourceFile
                  _convertctrl.VideoCompressors.MJpeg.Selected = True
                  _convertctrl.TargetFile = _targetFile
                  
                  _convertctrl.StartConvert()
                  _buttonConvert.Enabled = False
               Catch ex As Exception
                  MessageBox.Show(ex.Message)
               End Try
            End Sub

[C#]

            private void _buttonConvert_Click(object sender, System.EventArgs e)
            {
               try
               {
                  _convertctrl.Preview = true;
                  _convertctrl.SourceFile = _sourceFile;
                  _convertctrl.VideoCompressors.MJpeg.Selected = true;
                  _convertctrl.TargetFile = _targetFile;
                  
                  _convertctrl.StartConvert();
                  _buttonConvert.Enabled = false;
               }
               catch (Exception ex)
               {
                  MessageBox.Show(this, ex.Message);
               }
            }

Build, and Run the program to test it.

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Creating a Basic LEADTOOLS Multimedia Convert Application