/// <summary>
/// Read an icon resource from a previously loaded module.
/// </summary>
/// <param name="hModule">Module handle.</param>
/// <param name="lpRes">Pointer to a directory entry in the hardware-independent icon resource.</param>
/// <returns>Pointer to the end of the icon resource.</returns>
internal override IntPtr Read(IntPtr hModule, IntPtr lpRes)
{
_header = (GrpIconDirEntry)Marshal.PtrToStructure(lpRes, typeof(GrpIconDirEntry));
var hIconInfo = Kernel32.FindResourceEx(hModule, _type.Id, (IntPtr)_header.nID, _language);
if (hIconInfo == IntPtr.Zero)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
var hIconRes = Kernel32.LoadResource(hModule, hIconInfo);
if (hIconRes == IntPtr.Zero)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
var dibBits = Kernel32.LockResource(hIconRes);
if (dibBits == IntPtr.Zero)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
ReadImage(dibBits, (UInt32)Kernel32.SizeofResource(hModule, hIconInfo));
return(new IntPtr(lpRes.ToInt32() + Marshal.SizeOf(_header)));
}
static byte[] TryCreateIcon(IBinaryReader reader, ResourceDirectory iconDir) {
try {
reader.Position = 0;
var outStream = new MemoryStream();
var writer = new BinaryWriter(outStream);
// Write GRPICONDIR
writer.Write(reader.ReadUInt16());
writer.Write(reader.ReadUInt16());
ushort numImages;
writer.Write(numImages = reader.ReadUInt16());
var entries = new List<GrpIconDirEntry>();
for (int i = 0; i < numImages; i++) {
var e = new GrpIconDirEntry();
entries.Add(e);
e.bWidth = reader.ReadByte();
e.bHeight = reader.ReadByte();
e.bColorCount = reader.ReadByte();
e.bReserved = reader.ReadByte();
e.wPlanes = reader.ReadUInt16();
e.wBitCount = reader.ReadUInt16();
e.dwBytesInRes = reader.ReadUInt32();
e.nID = reader.ReadUInt16();
}
uint dataOffset = 2 * 3 + (uint)entries.Count * 0x10;
foreach (var e in entries) {
writer.Write(e.bWidth);
writer.Write(e.bHeight);
writer.Write(e.bColorCount);
writer.Write(e.bReserved);
writer.Write(e.wPlanes);
writer.Write(e.wBitCount);
writer.Write(e.dwBytesInRes);
writer.Write(dataOffset);
dataOffset += e.dwBytesInRes;
}
foreach (var e in entries) {
var d = iconDir.Directories.FirstOrDefault(a => a.Name == new ResourceName(e.nID));
if (d == null || d.Data.Count == 0)
return null;
var r = d.Data[0].Data;
Debug.Assert(r.Length == e.dwBytesInRes);
if (r.Length < e.dwBytesInRes)
return null;
r.Position = 0;
writer.Write(r.ReadBytes((int)e.dwBytesInRes), 0, (int)e.dwBytesInRes);
}
return outStream.ToArray();
}
catch (IOException) {
}
return null;
}
static byte[] TryCreateIcon(IBinaryReader reader, ResourceDirectory iconDir)
{
try {
reader.Position = 0;
var outStream = new MemoryStream();
var writer = new BinaryWriter(outStream);
// Write GRPICONDIR
writer.Write(reader.ReadUInt16());
writer.Write(reader.ReadUInt16());
ushort numImages;
writer.Write(numImages = reader.ReadUInt16());
var entries = new List <GrpIconDirEntry>();
for (int i = 0; i < numImages; i++)
{
var e = new GrpIconDirEntry();
entries.Add(e);
e.bWidth = reader.ReadByte();
e.bHeight = reader.ReadByte();
e.bColorCount = reader.ReadByte();
e.bReserved = reader.ReadByte();
e.wPlanes = reader.ReadUInt16();
e.wBitCount = reader.ReadUInt16();
e.dwBytesInRes = reader.ReadUInt32();
e.nID = reader.ReadUInt16();
}
uint dataOffset = 2 * 3 + (uint)entries.Count * 0x10;
foreach (var e in entries)
{
writer.Write(e.bWidth);
writer.Write(e.bHeight);
writer.Write(e.bColorCount);
writer.Write(e.bReserved);
writer.Write(e.wPlanes);
writer.Write(e.wBitCount);
writer.Write(e.dwBytesInRes);
writer.Write(dataOffset);
dataOffset += e.dwBytesInRes;
}
foreach (var e in entries)
{
var d = iconDir.Directories.FirstOrDefault(a => a.Name == new ResourceName(e.nID));
if (d == null || d.Data.Count == 0)
{
return(null);
}
var r = d.Data[0].Data;
Debug.Assert(r.Length == e.dwBytesInRes);
if (r.Length < e.dwBytesInRes)
{
return(null);
}
r.Position = 0;
writer.Write(r.ReadBytes((int)e.dwBytesInRes), 0, (int)e.dwBytesInRes);
}
return(outStream.ToArray());
}
catch (IOException) {
}
return(null);
}
/// <summary>
/// Read an icon resource from a previously loaded module.
/// </summary>
/// <param name="hModule">Module handle.</param>
/// <param name="lpRes">Pointer to a directory entry in the hardware-independent icon resource.</param>
/// <returns>Pointer to the end of the icon resource.</returns>
internal override IntPtr Read(IntPtr hModule, IntPtr lpRes)
{
_header = (GrpIconDirEntry)Marshal.PtrToStructure(lpRes, typeof (GrpIconDirEntry));
var hIconInfo = Kernel32.FindResourceEx(hModule, _type.Id, (IntPtr)_header.nID, _language);
if (hIconInfo == IntPtr.Zero) {
throw new Win32Exception(Marshal.GetLastWin32Error());
}
var hIconRes = Kernel32.LoadResource(hModule, hIconInfo);
if (hIconRes == IntPtr.Zero) {
throw new Win32Exception(Marshal.GetLastWin32Error());
}
var dibBits = Kernel32.LockResource(hIconRes);
if (dibBits == IntPtr.Zero) {
throw new Win32Exception(Marshal.GetLastWin32Error());
}
ReadImage(dibBits, (UInt32)Kernel32.SizeofResource(hModule, hIconInfo));
return new IntPtr(lpRes.ToInt32() + Marshal.SizeOf(_header));
}
