RasterColor Constructor(int,int,int,int)

Summary

Initializes a new RasterColor structure with specific values for red, green and blue.

Syntax

Objective-C

C++/CLI

Java

Python

public RasterColor( 
   int alpha, 
   int red, 
   int green, 
   int blue 
)

- (instancetype)initWithRed:(NSInteger)red  
                      green:(NSInteger)green 
                       blue:(NSInteger)blue 
                      alpha:(NSInteger)alpha

public RasterColor( 
   int alpha, 
   int red, 
   int green, 
   int blue 
);

public: 
RasterColor(  
   int alpha, 
   int red, 
   int green, 
   int blue 
)

__init__(self,alpha,red,green,blue) # Overloaded constructor

Parameters

alpha
The alpha component value for the new Color structure. Valid values are MinimumComponent through MaximumComponent.

red
The red component value for the new Color structure. Valid values are MinimumComponent through MaximumComponent.

green
The green component value for the new Color structure. Valid values are MinimumComponent through MaximumComponent.

blue
The blue component value for the new Color structure. Valid values are MinimumComponent through MaximumComponent.

Example

using Leadtools; 
 
 
public void RasterColorArgbExample() 
{ 
   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); 
 
   // The ARGB values represent real color components. This is NOT a palette index. 
   Assert.IsFalse(clr.IsPaletteIndex); 
 
   // 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); 
 
   // When the color is a palette index, the ARGB values are not color components 
   int index = 128; 
   RasterColor peletteIndex = RasterColor.FromPaletteIndex(index); 
   Assert.IsTrue(peletteIndex.IsPaletteIndex); 
   // The use the ToRGB method to obtain the index 
   Assert.IsTrue(peletteIndex.ToRgb() == index); 
}

Requirements

Target Platforms

Reference

RasterColor Structure

RasterColor Members

Overload List

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Help Version 23.0.2024.8.28

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