public FormControl(byte[] b)
{
using (var st = new MemoryStream(b))
using (var r = new FrxReader(st)) {
MinorVersion = r.ReadByte();
MajorVersion = r.ReadByte();
var cbForm = r.ReadUInt16();
PropMask = new FormPropMask(r.ReadUInt32());
// DataBlock
BackColor = PropMask.HasBackColor ? r.ReadOleColor() : null;
ForeColor = PropMask.HasForeColor ? r.ReadOleColor() : null;
NextAvailableId = PropMask.HasNextAvailableId ? r.ReadUInt32() : 0;
BooleanProperties = new FormFlags(PropMask.HasBooleanProperties ? r.ReadUInt32() : 0);
BorderStyle = PropMask.HasBorderStyle ? r.ReadBorderStyle() : BorderStyle.None;
MousePointer = PropMask.HasMousePointer ? r.ReadMousePointer() : MousePointer.Default;
ScrollBars = new FormScrollBarFlags(PropMask.HasScrollBars ? r.ReadByte() : (byte)0);
GroupCount = PropMask.HasGroupCount ? r.ReadInt32() : 0;
var captionCcb = PropMask.HasCaption ? r.ReadCcb() : Tuple.Create(0, false); // this seems to be in a different position than indicated in MS's spec?
if (PropMask.HasFont)
{
r.Skip2Bytes();
}
if (PropMask.HasMouseIcon)
{
r.Skip2Bytes();
}
Cycle = PropMask.HasCycle ? r.ReadCycle() : Cycle.AllForms;
SpecialEffect = PropMask.HasSpecialEffect ? r.ReadSpecialEffect() : SpecialEffect.Flat;
BorderColor = PropMask.HasBorderColor ? r.ReadOleColor() : null;
if (PropMask.HasPicture)
{
r.Skip2Bytes();
}
Zoom = PropMask.HasZoom ? r.ReadUInt32() : 0;
PictureAlignment = PropMask.HasPictureAlignment ? r.ReadPictureAlignment() : PictureAlignment.TopLeft;
PictureSizeMode = PropMask.HasPictureSizeMode ? r.ReadPictureSizeMode() : PictureSizeMode.Clip;
ShapeCookie = PropMask.HasShapeCookie ? r.ReadUInt32() : 0;
DrawBuffer = PropMask.HasDrawBuffer ? r.ReadUInt32() : 0;
// ExtraDataBlock
DisplayedSize = PropMask.HasDisplayedSize ? r.ReadCoords() : Tuple.Create(0, 0);
LogicalSize = PropMask.HasLogicalSize ? r.ReadCoords() : Tuple.Create(0, 0);
ScrollPosition = PropMask.HasScrollPosition ? r.ReadCoords() : Tuple.Create(0, 0);
Caption = r.ReadStringFromCcb(captionCcb);
r.AlignTo(4);
if (cbForm != r.BaseStream.Position - 4)
{
throw new ApplicationException("Error reading 'f' stream in .frx data: expected cbForm size "
+ $"{r.BaseStream.Position - 4}, but actual size was {cbForm}.");
}
// StreamData
MouseIcon = PropMask.HasMouseIcon ? r.ReadGuidAndPicture() : new byte[0];
if (PropMask.HasFont)
{
FontIsStdFont = r.GetFontIsStdFont();
if (FontIsStdFont)
{
FontStdFont = r.ReadStdFont();
}
else
{
FontTextProps = r.ReadTextProps();
}
}
Picture = PropMask.HasPicture ? r.ReadGuidAndPicture() : new byte[0];
// FormSiteData
SiteClassInfos = new List <byte[]>();
ushort siteClassInfoCount = 0;
if (!PropMask.HasBooleanProperties || BooleanProperties.ClassTablePersisted)
{
siteClassInfoCount = r.Unaligned.ReadUInt16();
}
for (var i = 0; i < siteClassInfoCount; i++)
{
st.Seek(2, SeekOrigin.Current); // skip Version
SiteClassInfos.Add(r.Unaligned.ReadBytes(r.Unaligned.ReadUInt16()));
}
var siteCount = r.Unaligned.ReadUInt32();
var cbSites = r.Unaligned.ReadUInt32();
var sitesStartPos = r.BaseStream.Position;
var depths = new byte[siteCount];
var types = new byte[siteCount];
var siteDepthsLeft = siteCount;
while (siteDepthsLeft > 0)
{
var thisDepth = r.Unaligned.ReadByte();
var thisType = r.Unaligned.ReadByte();
var thisCount = (byte)1;
if ((thisType & 0x80) == 0x80)
{
thisCount = (byte)(thisType ^ 0x80);
thisType = r.Unaligned.ReadByte();
}
for (var i = 0; i < thisCount; i++)
{
var siteIdx = siteCount - siteDepthsLeft;
depths[siteIdx] = thisDepth;
types[siteIdx] = thisType;
siteDepthsLeft--;
}
}
var rem = (r.BaseStream.Position - sitesStartPos) % 4;
if (rem != 0)
{
r.BaseStream.Seek(4 - rem, SeekOrigin.Current); // add ArrayPadding
}
Sites = new OleSiteConcreteControl[siteCount];
for (var i = 0; i < siteCount; i++)
{
r.BaseStream.Seek(2, SeekOrigin.Current); // ignore Version
var cbSite = r.Unaligned.ReadUInt16();
Sites[i] = new OleSiteConcreteControl(r.Unaligned.ReadBytes(cbSite));
}
if (cbSites != r.BaseStream.Position - sitesStartPos)
{
throw new ApplicationException("Error reading 'f' stream in .frx data: expected cbSites size "
+ $"{r.BaseStream.Position - sitesStartPos} but actual size was {cbSites}.");
}
Remainder = st.Position < st.Length ? r.Unaligned.ReadBytes((int)(st.Length - st.Position)) : new byte[0];
}
}