GetStillDIB Method (CaptureCtrl)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Function GetStillDIB( _
   ByVal timeOut As Integer _
) As IntPtr

'Usage
 
Dim instance As CaptureCtrl
Dim timeOut As Integer
Dim value As IntPtr
 
value = instance.GetStillDIB(timeOut)

public virtual IntPtr GetStillDIB( 
   int timeOut
)

public:
virtual IntPtr GetStillDIB( 
   int timeOut
)

Parameters

timeOut: A value containing the maximum time, in milliseconds, to wait for the image.

Return Value

System.IntPtr

If the method succeeds, the caller must free the returned HDIB by calling the GlobalFree method. 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.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As New CaptureCtrlForm()
Public Sub GetStillDIBExample()
    ' reference the capture control
    Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

    Try
        ' set the video capture device, use your capture device name here
        If capturectrl.VideoDevices("Logitech") Is Nothing Then
            Throw New Exception("No Logitech video device available")
        End If

        capturectrl.VideoDevices("Logitech").Selected = True

        ' set the capture mode to still and start
        capturectrl.StartCapture(CaptureMode.Still)

        ' capture device independent bitmap
        Dim dib As IntPtr = capturectrl.GetStillDIB(-1)

        ' stop the capture
        capturectrl.StopCapture()

        _result = (dib <> Nothing)

        'free allocated global memory
        Marshal.FreeHGlobal(dib)
    Catch generatedExceptionName As COMException
        _result = False
    Catch generatedExceptionName As Exception
        _result = False
    End Try
End Sub

using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void GetStillDIBExample()
{
   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   try
   {
      // set the video capture device, use your capture device name here
      if (capturectrl.VideoDevices["Logitech"] == null)
         throw new Exception("No Logitech video device available");

      capturectrl.VideoDevices["Logitech"].Selected = true;

      // set the capture mode to still and start
      capturectrl.StartCapture(CaptureMode.Still);

      // capture device independent bitmap
      IntPtr dib = capturectrl.GetStillDIB(-1);

      // stop the capture
      capturectrl.StopCapture();

      _result = (dib != null);

      //free allocated global memory
      Marshal.FreeHGlobal(dib);
   }
   catch (COMException)
   {
      _result = false;
   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms

Reference

CaptureCtrl Class
CaptureCtrl Members