GetStillImage Method

Summary

Gets a System.Drawing.Image object.

Syntax
C#
VB
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. Note: The frame data is retrieved from the underlying graph after the processing filters. If the capture needs to occur before the processing is completed use the LeadVideoCallBackFilter and place it first in the collection of processing filters.

Example
C#
VB
using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.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.Multimedia 
Imports LeadtoolsMultimediaExamples.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

See Also

Reference

PlayCtrl Class

PlayCtrl Members

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