Helper property to get the range, default value, and other information for the
CameraControlProperty.Iris property.
Syntax
Example
Visual Basic | Copy Code |
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Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub CameraControlExample()
' reference the capture control
Dim capturectrl As CaptureCtrl = _form.CaptureCtrl
Try
' try to find a USB video device, use your 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
' reference the camera control
Dim camera As CameraControl = capturectrl.CameraControl
If Not camera Is Nothing Then
' try to set some camera auto properties
camera.AutoExposure = True
camera.AutoFocus = True
camera.AutoIris = True
camera.AutoPan = False
camera.AutoRoll = False
camera.AutoTilt = False
camera.AutoZoom = True
' now try to set some camera manual properties
camera.Exposure = camera.ExposureInfo.Min
camera.Focus = camera.FocusInfo.Max
camera.Iris = camera.IrisInfo.Default
camera.Pan = camera.PanInfo.Min
camera.Roll = camera.RollInfo.Min
camera.Tilt = camera.TiltInfo.Min
camera.Zoom = camera.ZoomInfo.Min
' now increment a property by the stepping delta
camera.Exposure += camera.ExposureInfo.StepDelta
' set the result to what we expect
_result = (camera.Exposure = camera.ExposureInfo.Min + camera.ExposureInfo.StepDelta)
' now check a property to see if it is supported and has a manual setting
' if so, set it to auto
If camera.ExposureInfo.Flags <> CameraControlFlags.Unsupported AndAlso camera.ExposureInfo.Flags = CameraControlFlags.Manual Then
camera.AutoExposure = True
End If
' set the result to what we expect
_result = _result And (camera.ExposureInfo.Flags = CameraControlFlags.Auto)
End If
' continue setting capture settings
' and possibly start a capture process
' ...
Catch e1 As Exception
_result = False
End Try
End Sub |
C# | Copy Code |
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public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void CameraControlExample()
{
// reference the capture control
CaptureCtrl capturectrl = _form.CaptureCtrl;
try
{
// try to find a USB video device, use your device name here
if (capturectrl.VideoDevices["USB"] == null)
throw new Exception("No USB video device available");
capturectrl.VideoDevices["USB"].Selected = true;
// reference the camera control
CameraControl camera = capturectrl.CameraControl;
if (camera != null)
{
// try to set some camera auto properties
camera.AutoExposure = true;
camera.AutoFocus = true;
camera.AutoIris = true;
camera.AutoPan = false;
camera.AutoRoll = false;
camera.AutoTilt = false;
camera.AutoZoom = true;
// now try to set some camera manual properties
camera.Exposure = camera.ExposureInfo.Min;
camera.Focus = camera.FocusInfo.Max;
camera.Iris = camera.IrisInfo.Default;
camera.Pan = camera.PanInfo.Min;
camera.Roll = camera.RollInfo.Min;
camera.Tilt = camera.TiltInfo.Min;
camera.Zoom = camera.ZoomInfo.Min;
// now increment a property by the stepping delta
camera.Exposure += camera.ExposureInfo.StepDelta;
// set the result to what we expect
_result = (camera.Exposure == camera.ExposureInfo.Min + camera.ExposureInfo.StepDelta);
// now check a property to see if it is supported and has a manual setting
// if so, set it to auto
if (camera.ExposureInfo.Flags != CameraControlFlags.Unsupported
&& camera.ExposureInfo.Flags == CameraControlFlags.Manual)
camera.AutoExposure = true;
// set the result to what we expect
_result &= (camera.ExposureInfo.Flags == CameraControlFlags.Auto);
}
// continue setting capture settings
// and possibly start a capture process
// ...
}
catch (Exception)
{
_result = false;
}
} |
Remarks
Requirements
Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7
See Also