Leadtools.MediaFoundation Namespace > CaptureCtrl Class : ScaleHeight Property |
'Declaration Public Overridable Property ScaleHeight As Single
'Usage Dim instance As CaptureCtrl Dim value As Single instance.ScaleHeight = value value = instance.ScaleHeight
public virtual float ScaleHeight {get; set;}
Imports Leadtools Imports Leadtools.MediaFoundation Imports LeadtoolsMediaFoundationExamples.Fixtures Public _result As Boolean = False Public _form As New CaptureCtrlForm() ' capture control Private capturectrl As CaptureCtrl ' output file Private outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_ScaleHeightExample.avi") Public Sub ScaleHeightExample() ' reference the capture control capturectrl = _form.CaptureCtrl Try ' set the source video device, select using 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 ' set the target output file capturectrl.TargetFile = outFile If capturectrl.IsModeAvailable(CaptureMode.Video) Then ' subscribe to the started event AddHandler capturectrl.Started, AddressOf CaptureCtrl_Started ' set the scale height capturectrl.ScaleHeight = 100 ' start capture capturectrl.StartCapture(CaptureMode.Video) ' get the scale height Dim Height As Single = capturectrl.ScaleHeight ' set the result to what we expect _result = (Height = 100) End If Catch generatedExceptionName As COMException _result = False Catch generatedExceptionName As Exception _result = False End Try End Sub Private Sub CaptureCtrl_Started(ByVal sender As Object, ByVal e As EventArgs) ' stop the capture (we don't need a complete capture for this example) capturectrl.StopCapture() End Sub Public NotInheritable Class LEAD_VARS Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media" End Class
using Leadtools; using Leadtools.MediaFoundation; using LeadtoolsMediaFoundationExamples.Fixtures; public bool _result = false; public CaptureCtrlForm _form = new CaptureCtrlForm(); // capture control CaptureCtrl capturectrl; // output file string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_ScaleHeightExample.avi"); public void ScaleHeightExample() { // reference the capture control capturectrl = _form.CaptureCtrl; try { // set the source video device, select using your device name here if (capturectrl.VideoDevices["USB"] == null) { throw new Exception("No USB video device available"); } capturectrl.VideoDevices["USB"].Selected = true; // set the target output file capturectrl.TargetFile = outFile; if (capturectrl.IsModeAvailable(CaptureMode.Video)) { // subscribe to the started event capturectrl.Started += CaptureCtrl_Started; // set the scale height capturectrl.ScaleHeight = 100; // start capture capturectrl.StartCapture(CaptureMode.Video); // get the scale height float Height = capturectrl.ScaleHeight; // set the result to what we expect _result = (Height == 100); } } catch (COMException) { _result = false; } catch (Exception) { _result = false; } } void CaptureCtrl_Started(object sender, EventArgs e) { // stop the capture (we don't need a complete capture for this example) capturectrl.StopCapture(); } static class LEAD_VARS { public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media"; }