Leadtools.ScreenCapture Namespace : ScreenCaptureException Class |
[SerializableAttribute()] public class ScreenCaptureException : Leadtools.LeadtoolsException, System.Runtime.InteropServices._Exception, System.Runtime.Serialization.ISerializable
'Declaration <SerializableAttribute()> Public Class ScreenCaptureException Inherits Leadtools.LeadtoolsException Implements System.Runtime.InteropServices._Exception, System.Runtime.Serialization.ISerializable
'Usage Dim instance As ScreenCaptureException
public sealed class ScreenCaptureException : System.Runtime.InteropServices._Exception, ~Remove~
function Leadtools.ScreenCapture.ScreenCaptureException()
[SerializableAttribute()] public ref class ScreenCaptureException : public Leadtools.LeadtoolsException, System.Runtime.InteropServices._Exception, System.Runtime.Serialization.ISerializable
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
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"; }
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
ScreenCaptureException Members
Leadtools.ScreenCapture Namespace
Implementing Screen Capture
ScreenCaptureEngine Class
ScreenCaptureInformation Class
ScreenCaptureInformationEventArgs Class
ScreenCaptureOptions Structure
ScreenCaptureAreaOptions Structure
ScreenCaptureObjectOptions Structure