This property indicates whether RasterColor.Reserved is set to 1. Setting this property to true sets RasterColor.Reserved or RasterColor.ReservedColor to 1.
[XmlIgnoreAttribute()]
public bool IsReservedColor { get; set; }
public:
[XmlIgnoreAttribute]
property bool IsReservedColor
{
bool get()
void set(bool value)
}
IsReservedColor # get and set (RasterColor)
true if RasterColor.Reserved is 1. false if RasterColor.Reserved is not 1.
This is the same as checking whether RasterColor.Reserved == 2 (or RasterColor.Reserved == RasterColor.EmptyColor).
Example
// This C# example assumes 'image' is a 24/32/48/64-bit bitmap. It converts it to an optimized palette of 255 colors.
// In this case, pick a color for 'palette[0]' and let the other 255 entries be filled by ColorResolutionCommand.
private static void TestCustomOptimizedPalette(RasterImage image)
{
RasterColor[] palette = new RasterColor[256];
// Pick a color for the first palette entry (for example, a bitmap with a transparent color).
// In this case, set this entry to a color that is not in the image and then fill the transparent area with this color.
palette[0] = new RasterColor(1, 1, 1);
palette[0].IsReservedColor = true; // Mark this color as reserved
// Mark all the other palette entries as empty, so ColorResolutionCommand will fill them
for (int i = 1; i <= 255; i++)
palette[i].IsEmptyColor = true; // Mark all remaining palette entries as empty
ColorResolutionCommand cmd =
new ColorResolutionCommand(ColorResolutionCommandMode.InPlace,
8,
RasterByteOrder.Rgb,
RasterDitheringMethod.FloydStein,
ColorResolutionCommandPaletteFlags.Optimized,
null);
cmd.SetPalette(palette);
cmd.Run(image);
// Now 'image' is an 8-bit image with a palette. If you do 'RasterColor[] imagePalette = image.GetPalette()':
// - imagePalette[0] should be the selected color
// - imagePalette[1], imagePalette[2], ... imagePalette[255] should be various colors chosen by the ColorResolution command
}
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