Specifies the width of the client area of the control.
public virtual float ScaleWidth { get; set; }
Public Overridable Property ScaleWidth As Single
A value representing the width.
If you assign a value to this property, the actual width of the control does not change, but the current width is expressed using the value that you provide. This lets you use a custom coordinate system. For example, you can set the ScaleWidth and ScaleHeight both to 100; then express all coordinates as percentage offsets.
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_ScaleWidthExample.avi");
public void ScaleWidthExample()
{
// 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 width
capturectrl.ScaleWidth = 100;
// start capture
capturectrl.StartCapture(CaptureMode.Video);
// get the scale sidth
float Width = capturectrl.ScaleWidth;
// set the result to what we expect
_result = (Width == 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 20\Media";
}
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_ScaleWidthExample.avi")
Public Sub ScaleWidthExample()
' 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 width
capturectrl.ScaleWidth = 100
' start capture
capturectrl.StartCapture(CaptureMode.Video)
' get the scale sidth
Dim Width As Single = capturectrl.ScaleWidth
' set the result to what we expect
_result = (Width = 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 20\Media"
End Class
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