Gets a device independent bitmap during a CaptureMode.Still capture.
public virtual IntPtr GetStillDIB(
int timeOut
)
Public Overridable Function GetStillDIB( _
ByVal timeOut As Integer _
) As IntPtr
public:
virtual IntPtr GetStillDIB(
int timeOut
)
timeOut
A value containing the maximum time, in milliseconds, to wait for the image.
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.
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;
}
}
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
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