Leadtools.Windows.Controls Namespace > ImageViewer Class : InteractiveUserRectangle Event |
public event EventHandler<RectangleInteractiveEventArgs> InteractiveUserRectangle
'Declaration Public Event InteractiveUserRectangle As EventHandler(Of RectangleInteractiveEventArgs)
'Usage Dim instance As ImageViewer Dim handler As EventHandler(Of RectangleInteractiveEventArgs) AddHandler instance.InteractiveUserRectangle, handler
public event EventHandler<RectangleInteractiveEventArgs> InteractiveUserRectangle
add_InteractiveUserRectangle(function(sender, e)) remove_InteractiveUserRectangle(function(sender, e))
public: event EventHandler<RectangleInteractiveEventArgs^>^ InteractiveUserRectangle
The event handler receives an argument of type RectangleInteractiveEventArgs containing data related to this event. The following RectangleInteractiveEventArgs properties provide information specific to this event.
Property | Description |
---|---|
Bounds | Gets the bounds location for the current interactive rectangle mode. |
Cancel (Inherited from Leadtools.Windows.Controls.InteractiveEventArgs) | Gets or sets a value indicating whether the interactive mode should be canceled. |
Handled (Inherited from System.Windows.RoutedEventArgs) | |
OriginalSource (Inherited from System.Windows.RoutedEventArgs) | |
RoutedEvent (Inherited from System.Windows.RoutedEventArgs) | |
Source (Inherited from System.Windows.RoutedEventArgs) | |
Status (Inherited from Leadtools.Windows.Controls.InteractiveEventArgs) | Gets the current status of the interactive mode. |
Occurs when the InteractiveMode property is set to InteractiveMode.UseRectangle.
Use the InteractiveMode.UserRectangle and InteractiveUserRectangle to draw a rectangle on the surface of the control. The ImageViewer object will handle mouse cursor down and up events, mouse movement, canceling (through the ESC key or when the control loses the focus) and clipping.
The InteractiveUserRectangle event will occur every time the user moves the mouse or clicks any of the buttons with the corresponding data in the RectangleInteractiveEventArgs of the event.
You can use the user-defined rectangle interactive mode to perform additional interactive operations on the viewer not handled by any of the pre-defined InteractiveMode.
You can use the BoundsToImageCoordinates and BoundsFromImageCoordinates methods to convert a rectangle between image and control coordinates.
Public Sub BitmapSourceViewer_IsInteractiveModeBusy(ByVal viewer As ImageViewer) AddHandler viewer.InteractiveUserRectangle, AddressOf viewer_InteractiveUserRectangle viewer.InteractiveMode = InteractiveMode.UserRectangle MessageBox.Show("Interactive mode set to draw a rectangular geometry." & Constants.vbLf & "If mouse is dragged up or to the left, interactive mode is cancelled") End Sub Private Sub viewer_InteractiveUserRectangle(ByVal sender As Object, ByVal e As RectangleInteractiveEventArgs) Console.WriteLine("" & e.Status) Dim viewer As ImageViewer = TryCast(sender, ImageViewer) Dim ee As RectangleInteractiveEventArgs = New RectangleInteractiveEventArgs(e.Status, e.Bounds) If e.Status = InteractiveModeStatus.End Then e.Cancel = True If (Not viewer.IsInteractiveModeBusy) Then MessageBox.Show("Interactive mode (Rectangular geometry) cancelled") viewer.InteractiveMode = InteractiveMode.None End If End If Console.WriteLine("" & e.Bounds.Left & ", " & e.Bounds.Top & ", " & e.Bounds.Right & ", " & e.Bounds.Bottom) End Sub
public void BitmapSourceViewer_IsInteractiveModeBusy(ImageViewer viewer) { viewer.InteractiveUserRectangle += new EventHandler<RectangleInteractiveEventArgs>(viewer_InteractiveUserRectangle); viewer.InteractiveMode = InteractiveMode.UserRectangle; MessageBox.Show("Interactive mode set to draw a rectangular geometry.\nIf mouse is dragged up or to the left, interactive mode is cancelled"); } void viewer_InteractiveUserRectangle(object sender, RectangleInteractiveEventArgs e) { Console.WriteLine(@"" + e.Status); ImageViewer viewer = sender as ImageViewer; RectangleInteractiveEventArgs ee = new RectangleInteractiveEventArgs(e.Status, e.Bounds); if (e.Status == InteractiveModeStatus.End) { e.Cancel = true; if (!viewer.IsInteractiveModeBusy) { MessageBox.Show("Interactive mode (Rectangular geometry) cancelled"); viewer.InteractiveMode = InteractiveMode.None; } } Console.WriteLine(@"" + e.Bounds.Left + ", " + e.Bounds.Top + ", " + e.Bounds.Right + ", " + e.Bounds.Bottom); }
public void BitmapSourceViewer_IsInteractiveModeBusy(ImageViewer viewer) { viewer.InteractiveUserRectangle += new EventHandler<RectangleInteractiveEventArgs>(viewer_InteractiveUserRectangle); viewer.InteractiveMode = InteractiveMode.UserRectangle; MessageBox.Show("Interactive mode set to draw a rectangular geometry.\nIf mouse is dragged up or to the left, interactive mode is cancelled"); } void viewer_InteractiveUserRectangle(object sender, RectangleInteractiveEventArgs e) { Console.WriteLine(@"" + e.Status); ImageViewer viewer = sender as ImageViewer; RectangleInteractiveEventArgs ee = new RectangleInteractiveEventArgs(e.Status, e.Bounds); if (e.Status == InteractiveModeStatus.End) { e.Cancel = true; if (!viewer.IsInteractiveModeBusy) { MessageBox.Show("Interactive mode (Rectangular geometry) cancelled"); viewer.InteractiveMode = InteractiveMode.None; } } Console.WriteLine(@"" + e.Bounds.Left + ", " + e.Bounds.Top + ", " + e.Bounds.Right + ", " + e.Bounds.Bottom); }
Public Sub BitmapSourceViewer_IsInteractiveModeBusy(ByVal viewer As ImageViewer) AddHandler viewer.InteractiveUserRectangle, AddressOf viewer_InteractiveUserRectangle viewer.InteractiveMode = InteractiveMode.UserRectangle MessageBox.Show("Interactive mode set to draw a rectangular geometry." & Constants.vbLf & _ "If mouse is dragged up or to the left, interactive mode is cancelled") End Sub Private Sub viewer_InteractiveUserRectangle(ByVal sender As Object, ByVal e As RectangleInteractiveEventArgs) Console.WriteLine("" & e.Status) Dim viewer As ImageViewer = TryCast(sender, ImageViewer) Dim ee As RectangleInteractiveEventArgs = New RectangleInteractiveEventArgs(e.Status, e.Bounds) If e.Status = InteractiveModeStatus.End Then e.Cancel = True If (Not viewer.IsInteractiveModeBusy) Then MessageBox.Show("Interactive mode (Rectangular geometry) cancelled") viewer.InteractiveMode = InteractiveMode.None End If End If Console.WriteLine("" & e.Bounds.Left & ", " & e.Bounds.Top & ", " & e.Bounds.Right & ", " & e.Bounds.Bottom) End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2