Gets or sets a value indicating whether the control automatically processes the keyboard and mousewheel.
public bool EnableScrollingInterface { get; set; }
public:
property bool EnableScrollingInterface
{
bool get()
void set(bool value)
}
true if the control automatically processes the keyboard and the mousewheel; otherwise, false. Default value is false.
When automatic keyboard and mousewheel processing is enabled, the RasterImageViewer Control will process the following keys:
Key | Event |
---|---|
System.Windows.Forms.Keys.Up | Scrolls up. |
System.Windows.Forms.Keys.Down | Scrolls down. |
System.Windows.Forms.Keys.Left | Scrolls left. |
System.Windows.Forms.Keys.Right | Scrolls right. |
System.Windows.Forms.Keys.PageUp | Scrolls up one page. |
System.Windows.Forms.Keys.PageDown | Scrolls down one page. |
System.Windows.Forms.Keys.Home | Scrolls back to 0, 0. |
System.Windows.Forms.Keys.End | Scrolls down to maximum width and height. |
The scrolling is only valid of the value of AutoScroll is set to true
Holding down the control key while pressing up, down, left or right will scroll by a page to the appropriate direction.
using Leadtools.WinForms;
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;
using Leadtools.Drawing;
public void RasterImageViewer_RasterImageViewer()
{
MyForm1 form = new MyForm1();
form.ShowDialog();
}
class MyForm1 : Form
{
RasterImageViewer theViewer;
public MyForm1()
{
// Create the raster viewer
theViewer = new RasterImageViewer();
theViewer.Dock = DockStyle.Fill;
theViewer.DoubleBuffer = true;
theViewer.BorderStyle = BorderStyle.Fixed3D;
theViewer.AutoResetScaleFactor = true;
theViewer.AutoResetScrollPosition = true;
theViewer.HorizontalAlignMode = RasterPaintAlignMode.Center;
theViewer.VerticalAlignMode = RasterPaintAlignMode.Far;
theViewer.FrameSize = new SizeF(10, 5);
theViewer.FrameColor = Color.Red;
theViewer.FramesIsPartOfImage = true;
theViewer.FrameShadowSize = new SizeF(5, 5);
theViewer.FrameShadowColor = Color.Blue;
theViewer.AutoScroll = true;
theViewer.UseDpi = true;
// Set the paint properties
RasterPaintProperties p = new RasterPaintProperties();
p.PaintDisplayMode = RasterPaintDisplayModeFlags.Bicubic;
p.PaintEngine = RasterPaintEngine.GdiPlus;
p.UsePaintPalette = true;
theViewer.PaintProperties = p;
theViewer.AnimateRegion = true;
theViewer.EnableTimer = true;
theViewer.EnableScrollingInterface = true;
Controls.Add(theViewer);
theViewer.BringToFront();
// load an image into the viewer
RasterCodecs codecs = new RasterCodecs();
theViewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Sample1.cmp"));
codecs.Dispose();
Text = string.Format("Size mode = {0}, double click to change", theViewer.SizeMode);
theViewer.DoubleClick += new EventHandler(theViewer_DoubleClick);
}
void theViewer_DoubleClick(object sender, EventArgs e)
{
switch (theViewer.SizeMode)
{
case RasterPaintSizeMode.Normal:
theViewer.SizeMode = RasterPaintSizeMode.Stretch;
break;
case RasterPaintSizeMode.Stretch:
theViewer.SizeMode = RasterPaintSizeMode.Fit;
break;
case RasterPaintSizeMode.Fit:
theViewer.SizeMode = RasterPaintSizeMode.FitAlways;
break;
case RasterPaintSizeMode.FitAlways:
theViewer.SizeMode = RasterPaintSizeMode.FitWidth;
break;
case RasterPaintSizeMode.FitWidth:
theViewer.SizeMode = RasterPaintSizeMode.Normal;
break;
}
Text = string.Format("Size mode = {0}, double click to change", theViewer.SizeMode);
base.OnDoubleClick(e);
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
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