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GetStillImage Method

Summary

Gets a System.Drawing.Image object during a CaptureMode.Still capture.

Syntax

C++

public virtual Image GetStillImage( 
   int timeOut 
)

Public Overridable Function GetStillImage( _ 
   ByVal timeOut As Integer _ 
) As Image

public: 
virtual Image^ GetStillImage(  
   int timeOut 
)

Parameters

timeOut
The maximum time, in milliseconds, to wait for the image.

Return Value

Captured video image as a System.Drawing.Image

Remarks

Gets a System.Drawing.Image object during a CaptureMode.Still capture. If TimeOut is -1, the method's time-out interval never elapses. If the method fails, an error is raised. For more information, refer to the Error Codes.

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void GetStillImageExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   // output file 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_GetStillImageExample.jpg"); 
 
   try 
   { 
      // set the video capture device, use your capture device name here 
      if (capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      capturectrl.VideoDevices["USB"].Selected = true; 
 
      // set the capture mode to still and start 
      capturectrl.StartCapture(CaptureMode.Still); 
 
      // get a still image 
      Image image = capturectrl.GetStillImage(-1); 
      if (image != null) 
         image.Save(outFile, ImageFormat.Jpeg); 
 
      // stop the capture 
      capturectrl.StopCapture(); 
 
      // check for the capture file and set the result 
      if (File.Exists(Path.Combine(Directory.GetCurrentDirectory(), outFile))) 
         _result = true; 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media"; 
}

Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As New CaptureCtrlForm() 
 
Public Sub GetStillImageExample() 
   ' reference the capture control 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
   ' output file 
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_GetStillImageExample.jpg") 
 
   Try 
      ' set the video capture device, use your capture device name here 
      If capturectrl.VideoDevices("USB") Is Nothing Then 
         Throw New Exception("No USB video device available") 
      End If 
 
      capturectrl.VideoDevices("USB").Selected = True 
 
      ' set the capture mode to still and start 
      capturectrl.StartCapture(CaptureMode.Still) 
 
      ' get a still image 
      Dim image As Image = capturectrl.GetStillImage(-1) 
      If image IsNot Nothing Then 
         image.Save(outFile, ImageFormat.Jpeg) 
      End If 
 
      ' stop the capture 
      capturectrl.StopCapture() 
 
      ' check for the capture file and set the result 
      If File.Exists(Path.Combine(Directory.GetCurrentDirectory(), outFile)) Then 
         _result = True 
      End If 
   Catch generatedExceptionName As Exception 
      _result = False 
   End Try 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media" 
End Class

Requirements

Target Platforms

Reference

CaptureCtrl Class

CaptureCtrl Members

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Help Version 20.0.2020.4.2

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies