mirror of https://github.com/dahall/Vanara.git
97 lines
3.9 KiB
C#
97 lines
3.9 KiB
C#
using System;
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using System.Runtime.InteropServices;
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using Vanara.Extensions;
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namespace Vanara.PInvoke
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{
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/// <summary>The alpha intensity value for the palette entry.</summary>
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[PInvokeData("wingdi.h")]
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[Flags]
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public enum PC : byte
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{
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/// <summary>
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/// Specifies that the low-order word of the logical palette entry designates a hardware palette index. This flag allows the
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/// application to show the contents of the display device palette.
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/// </summary>
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PC_EXPLICIT = 0x2,
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/// <summary>
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/// Specifies that the color be placed in an unused entry in the system palette instead of being matched to an existing color in
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/// the system palette. If there are no unused entries in the system palette, the color is matched normally. Once this color is
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/// in the system palette, colors in other logical palettes can be matched to this color.
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/// </summary>
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PC_NOCOLLAPSE = 0x4,
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/// <summary>
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/// Specifies that the logical palette entry be used for palette animation. This flag prevents other windows from matching colors
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/// to the palette entry since the color frequently changes. If an unused system-palette entry is available, the color is placed
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/// in that entry. Otherwise, the color is not available for animation.
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/// </summary>
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PC_RESERVED = 0x1,
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}
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/// <summary>The <c>LOGPALETTE</c> structure defines a logical palette.</summary>
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/// <remarks>
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/// The colors in the palette-entry table should appear in order of importance because entries earlier in the logical palette are
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/// most likely to be placed in the system palette.
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/// </remarks>
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// https://docs.microsoft.com/en-us/windows/desktop/api/wingdi/ns-wingdi-taglogpalette typedef struct tagLOGPALETTE { WORD
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// palVersion; WORD palNumEntries; PALETTEENTRY palPalEntry[1]; } LOGPALETTE, *PLOGPALETTE, *NPLOGPALETTE, *LPLOGPALETTE;
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[PInvokeData("wingdi.h", MSDNShortId = "99d70a0e-ac61-4a88-a500-66443e7882ad")]
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[StructLayout(LayoutKind.Sequential)]
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public class LOGPALETTE : IDisposable
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{
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/// <summary>The version number of the system.</summary>
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public ushort palVersion;
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/// <summary>The number of entries in the logical palette.</summary>
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public ushort palNumEntries;
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private IntPtr _palPalEntry;
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/// <summary>Specifies an array of PALETTEENTRY structures that define the color and usage of each entry in the logical palette.</summary>
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public PALETTEENTRY[] palPalEntry
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{
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get => _palPalEntry.ToArray<PALETTEENTRY>(palNumEntries);
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set { Marshal.FreeHGlobal(_palPalEntry); value.MarshalToPtr<PALETTEENTRY>(Marshal.AllocHGlobal, out _); }
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}
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/// <summary>Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.</summary>
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void IDisposable.Dispose() => Marshal.FreeHGlobal(_palPalEntry);
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}
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/// <summary>Specifies the color and usage of an entry in a logical palette.</summary>
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// https://docs.microsoft.com/en-us/windows/desktop/api/wingdi/ns-wingdi-tagpaletteentry typedef struct tagPALETTEENTRY { BYTE peRed;
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// BYTE peGreen; BYTE peBlue; BYTE peFlags; } PALETTEENTRY, *PPALETTEENTRY, *LPPALETTEENTRY;
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[PInvokeData("wingdi.h")]
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[StructLayout(LayoutKind.Sequential)]
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public struct PALETTEENTRY
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{
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/// <summary>
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/// <para>Type: <c>BYTE</c></para>
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/// <para>The red intensity value for the palette entry.</para>
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/// </summary>
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public byte peRed;
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/// <summary>
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/// <para>Type: <c>BYTE</c></para>
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/// <para>The green intensity value for the palette entry.</para>
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/// </summary>
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public byte peGreen;
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/// <summary>
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/// <para>Type: <c>BYTE</c></para>
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/// <para>The blue intensity value for the palette entry.</para>
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/// </summary>
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public byte peBlue;
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/// <summary>
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/// <para>Type: <c>BYTE</c></para>
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/// <para>
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/// The alpha intensity value for the palette entry. Note that as of DirectX 8, this member is treated differently than
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/// documented for Windows.
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/// </para>
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/// </summary>
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public PC peFlags;
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}
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} |