Describes a color consisting of relative intensities of alpha, red, green, and blue.
[SerializableAttribute()]
public struct RasterColor
<SerializableAttribute()>
Public Structure RasterColor
Inherits System.ValueType
@interface LTRasterColor : NSObject <NSCopying, NSCoding>
public final class RasterColor
[SerializableAttribute()]
public value class RasterColor : public System.ValueType
The LEADTOOLS RasterColor class provides a platform independent representation of an ARGB color that can be used in any platform supported by LEADTOOLS such as GDI, GDI+, and WPF.
To convert a LEADTOOLS RasterColor object to/from a device dependent color, you can either use the various properties of methods of this class (such as the A, R, G, B properties and the RasterColor(int alpha, int red, int green, int blue) constructor) directly, or use the following helper classes:
In the Document and Medical toolkits, the COLORREF value can represent a 16 bit grayscale value if RasterImage is a 12 or 16-bit grayscale bitmap. To avoid confusion with an RGB value, set the COLORREF_GRAY16 mask (0x04000000). In this case (0x0400YYYY), the lower 16 bits (0xYYYY) of the COLORREF value represent the 16-bit grayscale value. (0x0400FFFF is 16-bit white and 0x04000000 is 16-bit black.) This is not a standard Windows value. Therefore, although LEADTOOLS methods will recognize a COLORREF having this format, but Windows methods will not.
Converts a .NET color to a RasterColor and back.
using Leadtools;
public void Example()
{
const int A = 128, R = 24, G = 87, B = 134;
// Create a RasterColor
RasterColor clr = new RasterColor(A, R, G, B);
// Make sure the color is correct
Assert.IsTrue(clr.A == A);
Assert.IsTrue(clr.R == R);
Assert.IsTrue(clr.G == G);
Assert.IsTrue(clr.B == B);
// Show its value
Console.WriteLine(clr);
// Show the A, R, G and B values
Console.WriteLine("Alpha value: " + clr.A);
Console.WriteLine("Red value: " + clr.R);
Console.WriteLine("Green value: " + clr.G);
Console.WriteLine("Blue value: " + clr.B);
}
Imports Leadtools
Public Sub Example()
' Create a RasterColor
Dim clr As New RasterColor(128, 24, 87, 134)
' Make sure the color is correct
Debug.Assert(clr.A = 128)
Debug.Assert(clr.R = 24)
Debug.Assert(clr.G = 87)
Debug.Assert(clr.B = 134)
' Show its value
Console.WriteLine(clr)
' Show the A, R, G and B values
Console.WriteLine("Alpha value: " + clr.A.ToString())
Console.WriteLine("Red value: " + clr.R.ToString())
Console.WriteLine("Green value: " + clr.G.ToString())
Console.WriteLine("Blue value: " + clr.B.ToString())
End Sub
c#[Silverlight C# Example]
using Leadtools;
using Leadtools.Windows.Media;
public void Example()
{
Random rand = new Random();
// Create a random .NET color
Color clr1 = Color.FromArgb((byte)rand.Next(256), (byte)rand.Next(256), (byte)rand.Next(256), (byte)rand.Next(256));
// Convert this color to a LEADTOOLS color
RasterColor clr2 = RasterColorConverter.FromColor(clr1);
// Make sure both colors are equal
Debug.Assert(clr1.A == clr2.A);
Debug.Assert(clr1.R == clr2.R);
Debug.Assert(clr1.G == clr2.G);
Debug.Assert(clr1.B == clr2.B);
// Convert the LEADTOOLS color back to .NET
clr1 = RasterColorConverter.ToColor(clr2);
// Make sure both colors are equal
Debug.Assert(clr1.A == clr2.A);
Debug.Assert(clr1.R == clr2.R);
Debug.Assert(clr1.G == clr2.G);
Debug.Assert(clr1.B == clr2.B);
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.Windows.Media
Public Sub Example()
Dim rand As Random = New Random()
' Create a random .NET color
Dim clr1 As Color = Color.FromArgb(CByte(rand.Next(256)), CByte(rand.Next(256)), CByte(rand.Next(256)), CByte(rand.Next(256)))
' Convert this color to a LEADTOOLS color
Dim clr2 As RasterColor = RasterColorConverter.FromColor(clr1)
' Make sure both colors are equal
Debug.Assert(clr1.A = clr2.A)
Debug.Assert(clr1.R = clr2.R)
Debug.Assert(clr1.G = clr2.G)
Debug.Assert(clr1.B = clr2.B)
' Convert the LEADTOOLS color back to .NET
clr1 = RasterColorConverter.ToColor(clr2)
' Make sure both colors are equal
Debug.Assert(clr1.A = clr2.A)
Debug.Assert(clr1.R = clr2.R)
Debug.Assert(clr1.G = clr2.G)
Debug.Assert(clr1.B = clr2.B)
End Sub
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