- 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 "GetFastTwainScan" 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 browse to Leadtools For .NET "\LEAD Technologies\LEADTOOLS xx\Bin\DotNet\Win32 " folder and select the following DLLs:
- Leadtools.dll
- Leadtools.Twain.dll
- Leadtools.Codecs.dll
- Leadtools.WinForms.dll
- Go to the toolbox (View->Toolbox) and Drag and drop 3 instances of Button control to the top of the form and set the following properties for them:
Text Name Select Source buttonSelectSource Find Fast Config buttonFindFastConfig Acquire Fast Config buttonAcquireFastConfig - Switch to Form1 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 Imports Leadtools.Twain Imports Leadtools.Codecs Imports Leadtools.WinForms[C#]using Leadtools; using Leadtools.Twain; using Leadtools.Codecs; using Leadtools.WinForms; - Declare the following private variable:
[Visual Basic]
Private WithEvents twnSession As TwainSession Private fastConfigResult As TwainFindFastConfigurationResult[C#]private TwainSession twnSession; private TwainFindFastConfigurationResult fastConfigResult; - 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 Try ' Unlock Document support. ' Note that this is a sample key, which will not work in your toolkit. RasterSupport.Unlock(RasterSupportType.Document, "TestKey") twnSession = new TwainSession twnSession.Startup(Me, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None) Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub[C#]private void Form1_Load(object sender, System.EventArgs e) { try { // Unlock Document support. // Note that this is a sample key, which will not work in your toolkit. RasterSupport.Unlock(RasterSupportType.Document, "TestKey"); twnSession = new TwainSession(); twnSession.Startup(this, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None); } catch (Exception ex) { MessageBox.Show(this, ex.Message); } } - Add an event handler to the Form1 Closing event and code it as follows:
[Visual Basic]
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing Try twnSession.Shutdown() Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub[C#]private void Form1_FormClosing(object sender, FormClosingEventArgs e) { try { twnSession.Shutdown(); } catch (Exception ex) { MessageBox.Show(this, ex.Message); } } - Add an event handler to the buttonSelectSource Click event and code it as follows:
[Visual Basic]
Private Sub buttonSelectSource_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttonSelectSource.Click Try twnSession.SelectSource(String.Empty) Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub[C#]private void buttonSelectSource_Click(object sender, System.EventArgs e) { try { twnSession.SelectSource(string.Empty); } catch (Exception ex) { MessageBox.Show(this, ex.Message); } } - Add an event handler to the buttonFindFastConfig Click event and code it as follows:
[Visual Basic]
Private Sub buttonFindFastConfig_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttonFindFastConfig.Click Try twnSession.EnableFastConfigurationEvent = False fastConfigResult = twnSession.FindFastConfiguration("C:\Users\Public\Documents\LEADTOOLS Images", TwainFastUserInterfaceFlags.Show Or TwainFastUserInterfaceFlags.UseThread, 8, 5, Nothing) Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub[C#]private void buttonFindFastConfig_Click(object sender, System.EventArgs e) { try { twnSession.EnableFastConfigurationEvent = false; fastConfigResult = twnSession.FindFastConfiguration(@"C:\Users\Public\Documents\LEADTOOLS Images", TwainFastUserInterfaceFlags.Show | TwainFastUserInterfaceFlags.UseThread, 8, 5, null); } catch (Exception ex) { MessageBox.Show(this, ex.Message); } } - Add an event handler to the buttonAcquireFastConfig Click event and code it as follows:
[Visual Basic]
Private Sub buttonAcquireFastConfig_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttonAcquireFastConfig.Click Try twnSession.EnableAcquireMultiPageEvent = False twnSession.AcquireFast("C:\Users\Public\Documents\LEADTOOLS Images\test", _ TwainFastUserInterfaceFlags.Show, _ fastConfigResult.Best.TransferMechanism, _ fastConfigResult.Best.ImageFormat, _ fastConfigResult.Best.BitsPerPixel, _ True, _ fastConfigResult.Best.BufferSize, _ True) Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub[C#]private void buttonAcquireFastConfig_Click(object sender, System.EventArgs e) { try { twnSession.EnableAcquireMultiPageEvent = false; twnSession.AcquireFast(@"C:\Users\Public\Documents\LEADTOOLS Images\test", TwainFastUserInterfaceFlags.Show, fastConfigResult.Best.TransferMechanism, fastConfigResult.Best.ImageFormat, fastConfigResult.Best.BitsPerPixel, true, fastConfigResult.Best.BufferSize, true); } catch (Exception ex) { MessageBox.Show(this, ex.Message); } } - Build, and Run the program to test it.