![](dotnetdiagramimages/Leadtools_ScreenCapture_Leadtools_ScreenCapture_ScreenCaptureException.png)
Visual Basic (Declaration) | |
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<SerializableAttribute()> Public Class ScreenCaptureException Inherits Leadtools.LeadtoolsException Implements _Exception, ISerializable |
Visual Basic (Usage) | ![]() |
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Dim instance As ScreenCaptureException |
C# | |
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[SerializableAttribute()] public class ScreenCaptureException : Leadtools.LeadtoolsException, _Exception, ISerializable |
C++/CLI | |
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[SerializableAttribute()] public ref class ScreenCaptureException : public Leadtools.LeadtoolsException, _Exception, ISerializable |
Visual Basic | ![]() |
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Public Sub scEngine_CaptureInformation(ByVal sender As Object, ByVal e As ScreenCaptureInformationEventArgs) Handles scEngine.CaptureInformation ' Define codecs class object to save the image Dim codecs As New RasterCodecs() codecs.ThrowExceptionsOnInvalidImages = True ' Save the resulted Image codecs.Save(e.Image, Path.Combine(LEAD_VARS.ImagesDir, "CapturedImage.bmp"), RasterImageFormat.Bmp, 24) ' NOTE: e.Information is a ScreenCaptureInformation structure filled with information ' about the captured image, this information can be used here ' Display a MessageBox with the bounds of the capture area MessageBox.Show("Captured Area Bounds:" & Environment.NewLine & "Top:" & e.Information.Area.Top.ToString() & Environment.NewLine & "Left:" & e.Information.Area.Left.ToString() & Environment.NewLine & "Right:" + e.Information.Area.Right.ToString() & Environment.NewLine & "Bottom:" & e.Information.Area.Bottom.ToString()) ' everything worked fine e.Cancel = False End Sub WithEvents scEngine As ScreenCaptureEngine Public Sub ScreenCaptureExceptionExample() ScreenCaptureEngine.Startup() Dim captureInformation As ScreenCaptureInformation = Nothing scEngine = New ScreenCaptureEngine() Try MessageBox.Show("After you close this message box," & Environment.NewLine & "press F11 to capture the wallpaper.") Dim image As RasterImage = scEngine.CaptureWallpaper(captureInformation) Catch ex As ScreenCaptureException ' LEADTOOLS ScreenCapture Error MessageBox.Show(String.Format("Could not capture wallpaper.{0}ScreenCapture error code: {1}{0}Message: {2}", Environment.NewLine, ex.Code, ex.Message)) Catch ex As Exception ' Other errors MessageBox.Show(String.Format("Could not capture wallpaper.{0}{1}", Environment.NewLine, ex.Message)) End Try ScreenCaptureEngine.Shutdown() End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class |
C# | ![]() |
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void scEngine_CaptureInformation(object sender, ScreenCaptureInformationEventArgs e) { // Make sure that the image was captured successfully Debug.Assert(e.Image != null); // Define codecs class object to save the image RasterCodecs codecs = new RasterCodecs(); codecs.ThrowExceptionsOnInvalidImages = true; // Save the resulted Image codecs.Save(e.Image,Path.Combine(LEAD_VARS.ImagesDir,"Out_CapturedImage.bmp"), RasterImageFormat.Bmp, 24); // NOTE: e.Information is a ScreenCaptureInformation structure filled with information // about the captured image, this information can be used here // Display a MessageBox with the bounds of the capture area MessageBox.Show("Captured Area Bounds:\n" + "Top:" + e.Information.Area.Top.ToString() + "\n" + "Left:" + e.Information.Area.Left.ToString() + "\n" + "Right:" + e.Information.Area.Right.ToString() + "\n" + "Bottom:" + e.Information.Area.Bottom.ToString()); // everything worked fine e.Cancel = false; } public void ScreenCaptureExceptionExample() { ScreenCaptureEngine.Startup(); ScreenCaptureEngine scEngine = new ScreenCaptureEngine(); ScreenCaptureInformation captureInformation = null; scEngine.CaptureInformation += new EventHandler<ScreenCaptureInformationEventArgs>(scEngine_CaptureInformation); try { MessageBox.Show("After you close this message box,\npress F11 to capture the wallpaper."); RasterImage image = scEngine.CaptureWallpaper(captureInformation); } catch (ScreenCaptureException ex) { //LEADTOOLS ScreenCapture Error MessageBox.Show(string.Format("Could not capture wallpaper.{0}ScreenCapture error code: {1}{0}Message: {2}", Environment.NewLine, ex.Code, ex.Message)); } catch (Exception ex) { // Other errors MessageBox.Show(string.Format("Could not capture wallpaper.{0}{1}", Environment.NewLine, ex.Message)); } ScreenCaptureEngine.Shutdown(); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; } |
System.Object
System.Exception
Leadtools.LeadtoolsException
Leadtools.ScreenCapture.ScreenCaptureException
Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7
Reference
ScreenCaptureException MembersLeadtools.ScreenCapture Namespace
Implementing Screen Capture
ScreenCaptureEngine Class
ScreenCaptureInformation Class
ScreenCaptureInformationEventArgs Class
ScreenCaptureOptions Structure
ScreenCaptureAreaOptions Structure
ScreenCaptureObjectOptions Structure