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Added COLORREF

pull/10/head
David Hall 2017-12-24 10:25:20 -07:00
parent 1bfe3bde67
commit 988f5c8ba6
1 changed files with 65 additions and 0 deletions
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65
PInvoke/Gdi32/WinGdi.cs
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@ -432,5 +432,70 @@ namespace Vanara.PInvoke
[return: MarshalAs(UnmanagedType.Bool)]
[PInvokeData("Wingdi.h", MSDNShortId = "dd145141")]
public static extern bool TransparentBlt(SafeDCHandle hdcDest, int xOriginDest, int yOriginDest, int wDest, int hDest, SafeDCHandle hdcSrc, int xOriginSrc, int yOriginSrc, int wSrc, int hSrc, int crTransparent);
/// <summary>The COLORREF value is used to specify an RGB color in the form <c>0x00bbggrr</c>.</summary>
[PInvokeData("WinDef.h")]
[StructLayout(LayoutKind.Explicit, Size = 4)]
public struct COLORREF
{
/// <summary>The DWORD value</summary>
[FieldOffset(0)]
private uint Value;
/// <summary>The intensity of the red color.</summary>
[FieldOffset(0)]
public byte R;
/// <summary>The intensity of the green color.</summary>
[FieldOffset(1)]
public byte G;
/// <summary>The intensity of the blue color.</summary>
[FieldOffset(2)]
public byte B;
/// <summary>Initializes a new instance of the <see cref="COLORREF"/> struct.</summary>
/// <param name="r">The intensity of the red color.</param>
/// <param name="g">The intensity of the green color.</param>
/// <param name="b">The intensity of the blue color.</param>
public COLORREF(byte r, byte g, byte b)
{
Value = 0;
R = r;
G = g;
B = b;
}
/// <summary>Initializes a new instance of the <see cref="COLORREF"/> struct.</summary>
/// <param name="value">The packed DWORD value.</param>
public COLORREF(uint value)
{
R = 0;
G = 0;
B = 0;
Value = value & 0x00FFFFFF;
}
/// <summary>Initializes a new instance of the <see cref="COLORREF"/> struct.</summary>
/// <param name="color">The color.</param>
public COLORREF(System.Drawing.Color color) : this(color.R, color.G, color.B) { }
/// <summary>Performs an implicit conversion from <see cref="COLORREF"/> to <see cref="System.Drawing.Color"/>.</summary>
/// <param name="cr">The <see cref="COLORREF"/> value.</param>
/// <returns>The result of the conversion.</returns>
public static implicit operator System.Drawing.Color(COLORREF cr) => System.Drawing.Color.FromArgb(cr.R, cr.G, cr.B);
/// <summary>Performs an implicit conversion from <see cref="System.Drawing.Color"/> to <see cref="COLORREF"/>.</summary>
/// <param name="clr">The <see cref="System.Drawing.Color"/> value.</param>
/// <returns>The result of the conversion.</returns>
public static implicit operator COLORREF(System.Drawing.Color clr) => new COLORREF(clr);
/// <summary>Performs an implicit conversion from <see cref="COLORREF"/> to <see cref="System.UInt32"/>.</summary>
/// <param name="cr">The <see cref="COLORREF"/> value.</param>
/// <returns>The result of the conversion.</returns>
public static implicit operator uint(COLORREF cr) => cr.Value;
/// <summary>Performs an implicit conversion from <see cref="System.UInt32"/> to <see cref="COLORREF"/>.</summary>
/// <param name="value">The <see cref="uint"/> value.</param>
/// <returns>The result of the conversion.</returns>
public static implicit operator COLORREF(uint value) => new COLORREF(value);
}
}
}