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GetStillImage Method

Summary

Gets a System.Drawing.Image object.

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
Value containing the maximum time to wait for the image, in milliseconds.

Return Value

The System.Drawing.Image object

Remarks

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 PlayCtrlForm _form = new PlayCtrlForm(); 
public PlayCtrl _playctrl = null; 
public bool _result = false; 
public string _inFile = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.avi"); 
public string _outFile = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_GetStillImageExample.jpg"); 
 
public void GetStillImageExample() 
{ 
   // reference the play control 
   _playctrl = _form.PlayCtrl; 
 
   try 
   { 
      // set the test timer on our form 
      _form.TestTimer.Interval = 2000; // wait 2 seconds after start 
      _form.TestTimer.Tick += GetStillImage_Helper; 
 
      // set input media file 
      _playctrl.SourceFile = _inFile; 
 
      // set the timer on 
      _form.TestTimer.Start(); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
 
   // we'll loop on the state and pump messages for this example. 
   // but you should not need to if running from a Windows Forms application. 
   while (_playctrl.State == PlayState.Running) 
      Application.DoEvents(); 
 
   // check for the capture file and set the result 
   if (File.Exists(Path.Combine(Directory.GetCurrentDirectory(), _outFile))) 
      _result = true; 
} 
 
public void GetStillImage_Helper(object sender, EventArgs e) 
{ 
   // get a still image 
   Image image = _playctrl.GetStillImage(-1); 
   if (image != null) 
      image.Save(_outFile, ImageFormat.Jpeg); 
 
   // stop the capture 
   _playctrl.Stop(); 
} 
 
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 _form As PlayCtrlForm = New PlayCtrlForm() 
Public _playctrl As PlayCtrl = Nothing 
Public _result As Boolean = False 
Public _inFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.avi") 
Public _outFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_GetStillImageExample.jpg") 
 
Public Sub GetStillImageExample() 
   ' reference the play control 
   _playctrl = _form.PlayCtrl 
 
   Try 
      ' set the test timer on our form 
      _form.TestTimer.Interval = 2000 ' wait 2 seconds after start 
      AddHandler _form.TestTimer.Tick, AddressOf GetStillImage_Helper 
 
      ' set input media file 
      _playctrl.SourceFile = _inFile 
 
      ' set the timer on 
      _form.TestTimer.Start() 
   Catch e1 As Exception 
      _result = False 
   End Try 
 
   ' we'll loop on the state and pump messages for this example. 
   ' but you should not need to if running from a Windows Forms application. 
   Do While _playctrl.State = PlayState.Running 
      Application.DoEvents() 
   Loop 
 
   ' check for the capture file and set the result 
   If File.Exists(Path.Combine(Directory.GetCurrentDirectory(), _outFile)) Then 
      _result = True 
   End If 
End Sub 
 
Public Sub GetStillImage_Helper(ByVal sender As Object, ByVal e As EventArgs) 
   ' get a still image 
   Dim image As Image = _playctrl.GetStillImage(-1) 
   If Not image Is Nothing Then 
      image.Save(_outFile, ImageFormat.Jpeg) 
   End If 
 
   ' stop the capture 
   _playctrl.Stop() 
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

PlayCtrl Class

PlayCtrl 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