Gets or sets the current frame position.
Syntax
Visual Basic (Declaration) | |
---|
Public Overridable Property CurrentFramePosition As Integer |
Visual Basic (Usage) | Copy Code |
---|
Dim instance As PlayCtrl
Dim value As Integer
instance.CurrentFramePosition = value
value = instance.CurrentFramePosition |
C# | |
---|
public virtual int CurrentFramePosition {get; set;} |
C++/CLI | |
---|
public:
virtual property int CurrentFramePosition {
int get();
void set ( int value);
} |
Property Value
A value representing the current frame position.
Example
Visual Basic | Copy Code |
---|
Public _result As Boolean = False
Public _form As PlayCtrlForm = New PlayCtrlForm()
Private _duration As Double = 0.0
Private _currentPos As Double = -1
Public Sub PlayExample()
' reference the play control
Dim playctrl As PlayCtrl = _form.PlayCtrl
' input file
Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.avi")
Try
' set autostart to false
playctrl.AutoStart = False
' set the play count to 2
playctrl.PlayCount = 2
' set our source media file
playctrl.SourceFile = inFile
' get the reported duration
_duration = playctrl.Duration
' set the playback rate to 2x
If playctrl.IsRateSupported(2.0) Then
playctrl.Rate = 2.0
End If
' set event handler to get tracking position changes
AddHandler playctrl.TrackingPositionChanged, AddressOf PlayCtrl_TrackingPositionChanged
' run it!
playctrl.Run()
Catch e1 As Exception
_result = False
End Try
' we'll loop on the state and pump messages for this example.
' but you should not need to if running from a Windows Forms application.
Do While playctrl.State = PlayState.Running
Application.DoEvents()
Loop
' set the result to determine if the reported duration
' is the same as the final position from tracking
_result = (_duration = _currentPos AndAlso _duration > 0.0)
End Sub
Private Sub PlayCtrl_TrackingPositionChanged(ByVal sender As Object, ByVal e As TrackingPositionChangedEventArgs)
' get the frame and tracking positions for demonstration only
Dim frame As Integer = _form.PlayCtrl.CurrentFramePosition
Dim tracking As Integer = _form.PlayCtrl.CurrentTrackingPosition
' get the current position
_currentPos = Math.Max(_currentPos, _form.PlayCtrl.CurrentPosition)
End Sub
Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media"
End Class |
C# | Copy Code |
---|
public bool _result = false;
public PlayCtrlForm _form = new PlayCtrlForm();
double _duration = 0.0;
double _currentPos = -1;
public void PlayExample()
{
// reference the play control
PlayCtrl playctrl = _form.PlayCtrl;
// input file
string inFile =Path.Combine(LEAD_VARS.MediaDir,"PlayCtrl_Source.avi");
try
{
// set autostart to false
playctrl.AutoStart = false;
// set the play count to 2
playctrl.PlayCount = 2;
// set our source media file
playctrl.SourceFile = inFile;
// get the reported duration
_duration = playctrl.Duration;
// set the playback rate to 2x
if (playctrl.IsRateSupported(2.0))
playctrl.Rate = 2.0;
// set event handler to get tracking position changes
playctrl.TrackingPositionChanged += new TrackingPositionChangedEventHandler(PlayCtrl_TrackingPositionChanged);
// run it!
playctrl.Run();
}
catch (Exception)
{
_result = false;
}
// we'll loop on the state and pump messages for this example.
// but you should not need to if running from a Windows Forms application.
while (playctrl.State == PlayState.Running)
Application.DoEvents();
// set the result to determine if the reported duration
// is the same as the final position from tracking
_result = (_duration == _currentPos && _duration > 0.0);
}
void PlayCtrl_TrackingPositionChanged(object sender, TrackingPositionChangedEventArgs e)
{
// get the frame and tracking positions for demonstration only
int frame = _form.PlayCtrl.CurrentFramePosition;
int tracking = _form.PlayCtrl.CurrentTrackingPosition;
// get the current position
_currentPos = Math.Max(_currentPos, _form.PlayCtrl.CurrentPosition);
}
static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media";
} |
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