fixed a bug of Screenshot on win7
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NaBian committed
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@@ -1,4 +1,6 @@
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Security;
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using System.Windows;
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@@ -12,6 +14,7 @@ namespace HandyControl.Tools.Interop
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public const string
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User32 = "user32.dll",
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Gdi32 = "gdi32.dll",
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GdiPlus = "gdiplus.dll",
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Kernel32 = "kernel32.dll",
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Shell32 = "shell32.dll",
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MsImg = "msimg32.dll";
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@@ -31,6 +34,7 @@ namespace HandyControl.Tools.Interop
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PLANES = 14,
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BI_RGB = 0,
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DIB_RGB_COLORS = 0,
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E_FAIL = unchecked((int)0x80004005),
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NIF_MESSAGE = 0x00000001,
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NIF_ICON = 0x00000002,
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NIF_TIP = 0x00000004,
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@@ -659,5 +663,275 @@ namespace HandyControl.Tools.Interop
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public BitmapHandle hbmMask = null;
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public BitmapHandle hbmColor = null;
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}
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internal enum WINDOWCOMPOSITIONATTRIB
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{
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WCA_ACCENT_POLICY = 19
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct WINCOMPATTRDATA
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{
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public WINDOWCOMPOSITIONATTRIB Attribute;
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public IntPtr Data;
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public int DataSize;
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}
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internal enum ACCENTSTATE
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{
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ACCENT_DISABLED = 0,
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ACCENT_ENABLE_GRADIENT = 1,
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ACCENT_ENABLE_TRANSPARENTGRADIENT = 2,
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ACCENT_ENABLE_BLURBEHIND = 3,
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ACCENT_ENABLE_ACRYLICBLURBEHIND = 4,
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ACCENT_INVALID_STATE = 5
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct ACCENTPOLICY
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{
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public ACCENTSTATE AccentState;
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public int AccentFlags;
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public uint GradientColor;
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public int AnimationId;
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}
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[ComImport, Guid("0000000C-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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internal interface IStream
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{
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int Read([In] IntPtr buf, [In] int len);
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int Write([In] IntPtr buf, [In] int len);
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[return: MarshalAs(UnmanagedType.I8)]
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long Seek([In, MarshalAs(UnmanagedType.I8)] long dlibMove, [In] int dwOrigin);
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void SetSize([In, MarshalAs(UnmanagedType.I8)] long libNewSize);
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[return: MarshalAs(UnmanagedType.I8)]
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long CopyTo([In, MarshalAs(UnmanagedType.Interface)] IStream pstm, [In, MarshalAs(UnmanagedType.I8)] long cb, [Out, MarshalAs(UnmanagedType.LPArray)] long[] pcbRead);
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void Commit([In]int grfCommitFlags);
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void Revert();
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void LockRegion([In, MarshalAs(UnmanagedType.I8)]long libOffset, [In, MarshalAs(UnmanagedType.I8)] long cb, [In] int dwLockType);
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void UnlockRegion([In, MarshalAs(UnmanagedType.I8)] long libOffset, [In, MarshalAs(UnmanagedType.I8)] long cb, [In] int dwLockType);
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void Stat([In] IntPtr pStatstg, [In] int grfStatFlag);
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[return: MarshalAs(UnmanagedType.Interface)]
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IStream Clone();
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}
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[SuppressMessage("ReSharper", "InconsistentNaming")]
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internal class StreamConsts
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{
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public const int LOCK_WRITE = 0x1;
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public const int LOCK_EXCLUSIVE = 0x2;
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public const int LOCK_ONLYONCE = 0x4;
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public const int STATFLAG_DEFAULT = 0x0;
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public const int STATFLAG_NONAME = 0x1;
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public const int STATFLAG_NOOPEN = 0x2;
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public const int STGC_DEFAULT = 0x0;
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public const int STGC_OVERWRITE = 0x1;
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public const int STGC_ONLYIFCURRENT = 0x2;
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public const int STGC_DANGEROUSLYCOMMITMERELYTODISKCACHE = 0x4;
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public const int STREAM_SEEK_SET = 0x0;
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public const int STREAM_SEEK_CUR = 0x1;
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public const int STREAM_SEEK_END = 0x2;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 8)]
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internal class ImageCodecInfoPrivate
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{
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[MarshalAs(UnmanagedType.Struct)]
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public Guid Clsid;
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[MarshalAs(UnmanagedType.Struct)]
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public Guid FormatID;
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public IntPtr CodecName = IntPtr.Zero;
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public IntPtr DllName = IntPtr.Zero;
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public IntPtr FormatDescription = IntPtr.Zero;
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public IntPtr FilenameExtension = IntPtr.Zero;
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public IntPtr MimeType = IntPtr.Zero;
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public int Flags;
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public int Version;
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public int SigCount;
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public int SigSize;
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public IntPtr SigPattern = IntPtr.Zero;
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public IntPtr SigMask = IntPtr.Zero;
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}
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internal class ComStreamFromDataStream : IStream
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{
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protected Stream DataStream;
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// to support seeking ahead of the stream length...
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private long _virtualPosition = -1;
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internal ComStreamFromDataStream(Stream dataStream)
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{
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this.DataStream = dataStream ?? throw new ArgumentNullException(nameof(dataStream));
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}
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private void ActualizeVirtualPosition()
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{
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if (_virtualPosition == -1) return;
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if (_virtualPosition > DataStream.Length)
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DataStream.SetLength(_virtualPosition);
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DataStream.Position = _virtualPosition;
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_virtualPosition = -1;
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}
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public virtual IStream Clone()
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{
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NotImplemented();
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return null;
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}
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public virtual void Commit(int grfCommitFlags)
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{
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DataStream.Flush();
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ActualizeVirtualPosition();
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}
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public virtual long CopyTo(IStream pstm, long cb, long[] pcbRead)
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{
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const int bufsize = 4096; // one page
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var buffer = Marshal.AllocHGlobal(bufsize);
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if (buffer == IntPtr.Zero) throw new OutOfMemoryException();
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long written = 0;
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try
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{
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while (written < cb)
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{
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var toRead = bufsize;
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if (written + toRead > cb) toRead = (int)(cb - written);
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var read = Read(buffer, toRead);
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if (read == 0) break;
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if (pstm.Write(buffer, read) != read)
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{
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throw EFail("Wrote an incorrect number of bytes");
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}
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written += read;
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}
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}
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finally
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{
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Marshal.FreeHGlobal(buffer);
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}
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if (pcbRead != null && pcbRead.Length > 0)
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{
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pcbRead[0] = written;
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}
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return written;
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}
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public virtual Stream GetDataStream() => DataStream;
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public virtual void LockRegion(long libOffset, long cb, int dwLockType)
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{
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}
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protected static ExternalException EFail(string msg) => throw new ExternalException(msg, E_FAIL);
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protected static void NotImplemented() => throw new NotImplementedException();
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public virtual int Read(IntPtr buf, int length)
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{
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var buffer = new byte[length];
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var count = Read(buffer, length);
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Marshal.Copy(buffer, 0, buf, length);
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return count;
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}
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public virtual int Read(byte[] buffer, int length)
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{
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ActualizeVirtualPosition();
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return DataStream.Read(buffer, 0, length);
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}
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public virtual void Revert() => NotImplemented();
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public virtual long Seek(long offset, int origin)
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{
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var pos = _virtualPosition;
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if (_virtualPosition == -1)
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{
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pos = DataStream.Position;
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}
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var len = DataStream.Length;
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switch (origin)
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{
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case StreamConsts.STREAM_SEEK_SET:
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if (offset <= len)
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{
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DataStream.Position = offset;
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_virtualPosition = -1;
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}
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else
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{
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_virtualPosition = offset;
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}
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break;
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case StreamConsts.STREAM_SEEK_END:
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if (offset <= 0)
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{
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DataStream.Position = len + offset;
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_virtualPosition = -1;
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}
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else
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{
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_virtualPosition = len + offset;
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}
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break;
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case StreamConsts.STREAM_SEEK_CUR:
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if (offset + pos <= len)
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{
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DataStream.Position = pos + offset;
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_virtualPosition = -1;
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}
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else
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{
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_virtualPosition = offset + pos;
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}
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break;
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}
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return _virtualPosition != -1 ? _virtualPosition : DataStream.Position;
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}
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public virtual void SetSize(long value) => DataStream.SetLength(value);
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public virtual void Stat(IntPtr pstatstg, int grfStatFlag) => NotImplemented();
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public virtual void UnlockRegion(long libOffset, long cb, int dwLockType)
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{
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}
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public virtual int Write(IntPtr buf, int length)
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{
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var buffer = new byte[length];
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Marshal.Copy(buf, buffer, 0, length);
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return Write(buffer, length);
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}
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public virtual int Write(byte[] buffer, int length)
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{
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ActualizeVirtualPosition();
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DataStream.Write(buffer, 0, length);
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return length;
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}
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}
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}
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}
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