206 lines
7.2 KiB
C#
206 lines
7.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using Microsoft.VisualBasic;
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using System.Collections;
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using System.Data;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Runtime.CompilerServices;
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namespace Ink_Canvas.Helpers
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{
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public static class EdgeGestureUtil
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{
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private static Guid DISABLE_TOUCH_SCREEN = new Guid("32CE38B2-2C9A-41B1-9BC5-B3784394AA44");
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private static Guid IID_PROPERTY_STORE = new Guid("886d8eeb-8cf2-4446-8d02-cdba1dbdcf99");
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private static short VT_BOOL = 11;
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#region "Structures"
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[StructLayout(LayoutKind.Sequential, Pack = 4)]
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public struct PropertyKey
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{
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public PropertyKey(Guid guid, UInt32 pid)
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{
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fmtid = guid;
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this.pid = pid;
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}
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[MarshalAs(UnmanagedType.Struct)]
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public Guid fmtid;
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public uint pid;
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}
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[StructLayout(LayoutKind.Explicit)]
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public struct PropVariant
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{
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[FieldOffset(0)]
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public short vt;
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[FieldOffset(2)]
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private short wReserved1;
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[FieldOffset(4)]
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private short wReserved2;
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[FieldOffset(6)]
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private short wReserved3;
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[FieldOffset(8)]
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private sbyte cVal;
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[FieldOffset(8)]
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private byte bVal;
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[FieldOffset(8)]
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private short iVal;
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[FieldOffset(8)]
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public ushort uiVal;
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[FieldOffset(8)]
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private int lVal;
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[FieldOffset(8)]
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private uint ulVal;
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[FieldOffset(8)]
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private int intVal;
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[FieldOffset(8)]
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private uint uintVal;
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[FieldOffset(8)]
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private long hVal;
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[FieldOffset(8)]
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private long uhVal;
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[FieldOffset(8)]
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private float fltVal;
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[FieldOffset(8)]
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private double dblVal;
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[FieldOffset(8)]
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public bool boolVal;
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[FieldOffset(8)]
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private int scode;
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[FieldOffset(8)]
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private DateTime date;
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[FieldOffset(8)]
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private System.Runtime.InteropServices.ComTypes.FILETIME filetime;
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[FieldOffset(8)]
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private Blob blobVal;
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[FieldOffset(8)]
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private IntPtr pwszVal;
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/// <summary>
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/// Helper method to gets blob data
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/// </summary>
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private byte[] GetBlob()
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{
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byte[] Result = new byte[blobVal.Length];
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Marshal.Copy(blobVal.Data, Result, 0, Result.Length);
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return Result;
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}
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/// <summary>
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/// Property value
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/// </summary>
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public object Value
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{
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get
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{
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VarEnum ve = (VarEnum)vt;
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switch (ve)
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{
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case VarEnum.VT_I1:
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return bVal;
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case VarEnum.VT_I2:
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return iVal;
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case VarEnum.VT_I4:
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return lVal;
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case VarEnum.VT_I8:
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return hVal;
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case VarEnum.VT_INT:
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return iVal;
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case VarEnum.VT_UI4:
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return ulVal;
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case VarEnum.VT_LPWSTR:
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return Marshal.PtrToStringUni(pwszVal);
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case VarEnum.VT_BLOB:
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return GetBlob();
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}
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throw new NotImplementedException("PropVariant " + ve.ToString());
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}
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}
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}
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internal struct Blob
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{
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public int Length;
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public IntPtr Data;
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//Code Should Compile at warning level4 without any warnings,
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//However this struct will give us Warning CS0649: Field [Fieldname]
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//is never assigned to, and will always have its default value
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//You can disable CS0649 in the project options but that will disable
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//the warning for the whole project, it's a nice warning and we do want
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//it in other places so we make a nice dummy function to keep the compiler
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//happy.
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// 代码应该在警告级别 4 下编译而不会出现任何警告,但是此结构将给出警告 CS0649:字段 [Fieldname] 从未分配,并且始终具有其默认值。您可以在项目选项中禁用 CS0649,但这将禁用整个项目的警告,这是一个很好的警告,我们确实希望它在其他地方,所以我们制作了一个不错的虚拟函数来让编译器满意。
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private void FixCS0649()
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{
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Length = 0;
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Data = IntPtr.Zero;
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}
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}
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#endregion
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#region "Interfaces"
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[ComImport(), Guid("886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IPropertyStore
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{
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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void GetCount([Out(), In()] ref uint cProps);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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void GetAt([In()] uint iProp, ref PropertyKey pkey);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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void GetValue([In()] ref PropertyKey key, ref PropVariant pv);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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void SetValue([In()] ref PropertyKey key, [In()] ref PropVariant pv);
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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void Commit();
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[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
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void Release();
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}
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#endregion
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#region "Methods"
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[DllImport("shell32.dll", SetLastError = true)]
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private static extern int SHGetPropertyStoreForWindow(IntPtr handle, ref Guid riid, ref IPropertyStore propertyStore);
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public static void DisableEdgeGestures(IntPtr hwnd, bool enable)
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{
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IPropertyStore pPropStore = null;
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int hr = 0;
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hr = SHGetPropertyStoreForWindow(hwnd, ref IID_PROPERTY_STORE, ref pPropStore);
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if (hr == 0)
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{
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PropertyKey propKey = new PropertyKey();
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propKey.fmtid = DISABLE_TOUCH_SCREEN;
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propKey.pid = 2;
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PropVariant var = new PropVariant();
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var.vt = VT_BOOL;
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var.boolVal = enable;
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pPropStore.SetValue(ref propKey, ref var);
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Marshal.FinalReleaseComObject(pPropStore);
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}
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}
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#endregion
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}
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}
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