Пример #1
0
        public void Save(Stream outputStream)
        {
            if (_iconData != null)
            {
                ArgumentNullException.ThrowIfNull(outputStream);
                outputStream.Write(_iconData, 0, _iconData.Length);
            }
            else
            {
                // Ideally, we would pick apart the icon using
                // GetIconInfo, and then pull the individual bitmaps out,
                // converting them to DIBS and saving them into the file.
                // But, in the interest of simplicity, we just call to
                // OLE to do it for us.
                PICTDESC pictdesc = PICTDESC.CreateIconPICTDESC(Handle);
                Guid     g        = typeof(IPicture).GUID;
                IPicture picture  = OleCreatePictureIndirect(pictdesc, ref g, false);

                if (picture != null)
                {
                    try
                    {
                        ArgumentNullException.ThrowIfNull(outputStream);
                        picture.SaveAsFile(new GPStream(outputStream, makeSeekable: false), -1, out int temp);
                    }
                    finally
                    {
                        Debug.Assert(RuntimeInformation.IsOSPlatform(OSPlatform.Windows));
                        Marshal.ReleaseComObject(picture);
                    }
                }
            }
        }
Пример #2
0
        public unsafe void Save(Stream outputStream)
        {
            if (_iconData != null)
            {
                outputStream.Write(_iconData, 0, _iconData.Length);
            }
            else
            {
                if (outputStream == null)
                {
                    throw new ArgumentNullException(nameof(outputStream));
                }

                // Ideally, we would pick apart the icon using
                // GetIconInfo, and then pull the individual bitmaps out,
                // converting them to DIBS and saving them into the file.
                // But, in the interest of simplicity, we just call to
                // OLE to do it for us.
                PICTDESC pictdesc = PICTDESC.CreateIconPICTDESC(Handle);
                Guid     iid      = DrawingCom.IPicture.IID;
                IntPtr   lpPicture;
                Marshal.ThrowExceptionForHR(OleCreatePictureIndirect(&pictdesc, &iid, fOwn: 0, &lpPicture));

                IntPtr streamPtr = IntPtr.Zero;
                try
                {
                    // Use UniqueInstance here because we never want to cache the wrapper. It only gets used once and then disposed.
                    using DrawingCom.IPicture picture = (DrawingCom.IPicture)DrawingCom.Instance
                                                        .GetOrCreateObjectForComInstance(lpPicture, CreateObjectFlags.UniqueInstance);

                    var gpStream = new GPStream(outputStream, makeSeekable: false);
                    streamPtr = DrawingCom.Instance.GetOrCreateComInterfaceForObject(gpStream, CreateComInterfaceFlags.None);

                    DrawingCom.ThrowExceptionForHR(picture.SaveAsFile(streamPtr, -1, null));
                }
                finally
                {
                    if (streamPtr != IntPtr.Zero)
                    {
                        int count = Marshal.Release(streamPtr);
                        Debug.Assert(count == 0);
                    }

                    if (lpPicture != IntPtr.Zero)
                    {
                        int count = Marshal.Release(lpPicture);
                        Debug.Assert(count == 0);
                    }
                }
            }
        }
Пример #3
0
        public void Save(Stream outputStream)
        {
            if (_iconData != null)
            {
                outputStream.Write(_iconData, 0, _iconData.Length);
            }
            else
            {
                // Ideally, we would pick apart the icon using
                // GetIconInfo, and then pull the individual bitmaps out,
                // converting them to DIBS and saving them into the file.
                // But, in the interest of simplicity, we just call to
                // OLE to do it for us.
                PICTDESC pictdesc = PICTDESC.CreateIconPICTDESC(Handle);
                Guid     g        = typeof(IPicture).GUID;
                IPicture picture  = OleCreatePictureIndirect(pictdesc, ref g, false);

                if (picture != null)
                {
                    try
                    {
                        // We threw this way on NetFX
                        if (outputStream == null)
                        {
                            throw new ArgumentNullException("dataStream");
                        }

                        picture.SaveAsFile(new GPStream(outputStream, makeSeekable: false), -1, out int temp);
                    }
                    finally
                    {
                        Marshal.ReleaseComObject(picture);
                    }
                }
            }
        }
Пример #4
0
 internal static extern IPicture OleCreatePictureIndirect(PICTDESC pictdesc, [In] ref Guid refiid, bool fOwn);