Visual Basic (Declaration) | |
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<CategoryAttribute("Floater and Region")> <DescriptionAttribute("Gets or sets the position of the floater.")> Public Overridable Property FloaterPosition As Point |
Visual Basic (Usage) | Copy Code |
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Dim instance As RasterImageViewer Dim value As Point instance.FloaterPosition = value value = instance.FloaterPosition |
C# | |
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[CategoryAttribute("Floater and Region")] [DescriptionAttribute("Gets or sets the position of the floater.")] public virtual Point FloaterPosition {get; set;} |
C++/CLI | |
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[CategoryAttribute("Floater and Region")] [DescriptionAttribute("Gets or sets the position of the floater.")] public: virtual property Point FloaterPosition { Point get(); void set ( Point value); } |
Property Value
A System.Drawing.Point object that represents the top-left position used when painting the RasterImageViewer.FloaterImage.This sample creates a floater and lets the user move it.
Visual Basic | Copy Code |
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Private Sub viewer_InteractiveFloater(ByVal sender As Object, ByVal e As RasterViewerPointEventArgs) ' show information about the user interaction Dim viewer As RasterImageViewer = CType(IIf(TypeOf sender Is RasterImageViewer, sender, Nothing), RasterImageViewer) Console.WriteLine("Status: {0}, Canceled: {1}, Point: {2}, Floater Position: {3}", e.Status, e.Cancel, e.Point, viewer.FloaterPosition) End Sub Public Sub RasterImageViewer_FloaterPosition(ByVal viewer As RasterImageViewer) ' hook into the viewer InteractiveFloater event to get updated whenever the user moves the floater. AddHandler viewer.InteractiveFloater, AddressOf viewer_InteractiveFloater ' add a floater the viewer and start the floater interactive mode ' we are going to create the floater image manually as a red ellipse with a region. Dim palette As RasterColor() = New RasterColor() {} Dim floaterImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 200, 200, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, palette, IntPtr.Zero, 0) Dim container As RasterImageGdiPlusGraphicsContainer = New RasterImageGdiPlusGraphicsContainer(floaterImage) Try container.Graphics.FillRectangle(Brushes.Black, 0, 0, floaterImage.ImageWidth, floaterImage.ImageHeight) container.Graphics.FillEllipse(Brushes.Red, 0, 0, floaterImage.ImageWidth, floaterImage.ImageHeight) Finally CType(container, IDisposable).Dispose() End Try floaterImage.AddColorToRegion(RasterColor.FromKnownColor(RasterKnownColor.Red), RasterRegionCombineMode.Set) viewer.FloaterImage = floaterImage viewer.FloaterVisible = True viewer.FloaterPosition = New Point(100, 100) viewer.InteractiveMode = RasterViewerInteractiveMode.Floater MessageBox.Show("Click and move the floater") End Sub |
C# | Copy Code |
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private void viewer_InteractiveFloater(object sender, RasterViewerPointEventArgs e) { // show information about the user interaction RasterImageViewer viewer = sender as RasterImageViewer; Console.WriteLine("Status: {0}, Canceled: {1}, Point: {2}, Floater Position: {3}", e.Status, e.Cancel, e.Point, viewer.FloaterPosition); } public void RasterImageViewer_FloaterPosition(RasterImageViewer viewer) { // hook into the viewer InteractiveFloater event to get updated whenever the user moves the floater. viewer.InteractiveFloater += new EventHandler<RasterViewerPointEventArgs>(viewer_InteractiveFloater); // add a floater the viewer and start the floater interactive mode // we are going to create the floater image manually as a red ellipse with a region. RasterColor[]palette = new RasterColor[0]; RasterImage floaterImage = new RasterImage( RasterMemoryFlags.Conventional, 200, 200, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, palette, IntPtr.Zero, 0 ); using (RasterImageGdiPlusGraphicsContainer container = new RasterImageGdiPlusGraphicsContainer(floaterImage)) { container.Graphics.FillRectangle(Brushes.Black, 0, 0, floaterImage.ImageWidth, floaterImage.ImageHeight); container.Graphics.FillEllipse(Brushes.Red, 0, 0, floaterImage.ImageWidth, floaterImage.ImageHeight); } floaterImage.AddColorToRegion(RasterColor.FromKnownColor(RasterKnownColor.Red), RasterRegionCombineMode.Set); viewer.FloaterImage = floaterImage; viewer.FloaterVisible = true; viewer.FloaterPosition = new Point(100, 100); viewer.InteractiveMode = RasterViewerInteractiveMode.Floater; MessageBox.Show("Click and move the floater"); } |
You can manually set the value of this property to control where the RasterImageViewer.FloaterImage is painted.
When the RasterImageViewer.InteractiveMode of this RasterImageVieweris set to RasterViewerInteractiveMode.Floater, the viewer will update the value of this property as the user drags the RasterImageViewer.FloaterImage around.
Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7