PaletteGetEntry Method (GdPictureImaging)

In This Topic

Returns the color of a specific entry of the palette of a GdPicture image.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function PaletteGetEntry( _
   ByVal ImageID As Integer, _
   ByVal Entry As Integer _
) As Color

public Color PaletteGetEntry( 
   int ImageID,
   int Entry
)

public function PaletteGetEntry( 
    ImageID: Integer;
    Entry: Integer
): Color;

public function PaletteGetEntry( 
   ImageID : int,
   Entry : int
) : Color;

public: Color PaletteGetEntry( 
   int ImageID,
   int Entry
)

public:
Color PaletteGetEntry( 
   int ImageID,
   int Entry
)

Parameters

ImageID: GdPicture image identifier.
Entry: Index of the color palette. Must be a value between 0 and PaletteGetColorsCount() - 1 returned value.

Return Value

Color of the selected entry.

Example

Getting information about the specific palette entry of the selected image and showing the result on the screen.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    // Open an image file. An empty string allows the control to prompt for selecting a file.
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("");
 
    if (gdpictureImaging.IsPixelFormatIndexed(imageID))
    {
        int entriesCount = gdpictureImaging.PaletteGetColorsCount(imageID);
 
        if (entriesCount > 255)
        {
            System.Drawing.Color entryColor = gdpictureImaging.PaletteGetEntry(imageID, 130);
            Console.WriteLine("Color value of palette entry [130] is: {0}", entryColor.ToString());
        }
        else Console.WriteLine("Image do not contain palette with 256 colors!");
    }
    else Console.WriteLine("Image do not contain indexed colors!");
 
    // Release used resources.
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members