mirror of https://github.com/dahall/Vanara.git
42 lines
1.6 KiB
C#
42 lines
1.6 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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public static partial class User32
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{
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/// <summary>Contains information about a notification message.</summary>
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[StructLayout(LayoutKind.Sequential)]
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public struct NMHDR
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{
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/// <summary>A window handle to the control sending the message.</summary>
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public HWND hwndFrom;
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/// <summary>An identifier of the control sending the message.</summary>
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public IntPtr idFrom;
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/// <summary>
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/// A notification code. This member can be one of the common notification codes (see Notifications under General Control
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/// Reference), or it can be a control-specific notification code.
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/// </summary>
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public int code;
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/// <summary>Creates a <see cref="NMHDR"/> structure from an LPARAM value.</summary>
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/// <param name="lParam">The LPARAM value.</param>
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/// <returns>A <see cref="NMHDR"/> structure.</returns>
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public static NMHDR FromLParam(IntPtr lParam) => (NMHDR)Marshal.PtrToStructure(lParam, typeof(NMHDR));
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#if ALLOWSPAN
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/// <summary>Creates a reference to an <see cref="NMHDR"/> structure from an LPARAM value.</summary>
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/// <param name="lParam">The LPARAM value.</param>
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/// <returns>A <see cref="NMHDR"/> structure reference.</returns>
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public static ref NMHDR LParamAsRef(IntPtr lParam) => ref lParam.AsRef<NMHDR>();
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#endif
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/// <summary>Updates the <see cref="NMHDR"/> value pointed to by an LPARAM value from this instance.</summary>
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/// <param name="lParam">The LPARAM value to update.</param>
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public void UpdateLParam(IntPtr lParam) => Marshal.StructureToPtr(this, lParam, false);
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}
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}
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} |