private void CreateStorage()
{
Debug.Assert(storage == null, "but we already have a storage!!!");
IntPtr hglobal = IntPtr.Zero;
if (buffer != null)
{
hglobal = Kernel32.GlobalAlloc(Kernel32.GMEM.MOVEABLE, (uint)length);
IntPtr pointer = Kernel32.GlobalLock(hglobal);
try
{
if (pointer != IntPtr.Zero)
{
Marshal.Copy(buffer, 0, pointer, length);
}
}
finally
{
Kernel32.GlobalUnlock(hglobal);
}
}
try
{
iLockBytes = Ole32.CreateILockBytesOnHGlobal(hglobal, BOOL.TRUE);
if (buffer == null)
{
storage = Ole32.StgCreateDocfileOnILockBytes(
iLockBytes,
Ole32.STGM.CREATE | Ole32.STGM.READWRITE | Ole32.STGM.SHARE_EXCLUSIVE,
0);
}
else
{
storage = Ole32.StgOpenStorageOnILockBytes(
iLockBytes,
null,
Ole32.STGM.READWRITE | Ole32.STGM.SHARE_EXCLUSIVE,
IntPtr.Zero,
0);
}
}
catch (Exception)
{
if (iLockBytes == null && hglobal != IntPtr.Zero)
{
Kernel32.GlobalFree(hglobal);
}
else
{
iLockBytes = null;
}
storage = null;
}
}
public HRESULT GetNewStorage(out Ole32.IStorage storage)
{
Debug.WriteLineIf(RichTextDbg.TraceVerbose, "IRichTextBoxOleCallback::GetNewStorage");
Ole32.ILockBytes pLockBytes = Ole32.CreateILockBytesOnHGlobal(IntPtr.Zero, BOOL.TRUE);
Debug.Assert(pLockBytes != null, "pLockBytes is NULL!");
storage = Ole32.StgCreateDocfileOnILockBytes(
pLockBytes,
Ole32.STGM.SHARE_EXCLUSIVE | Ole32.STGM.CREATE | Ole32.STGM.READWRITE,
0);
Debug.Assert(storage != null, "storage is NULL!");
return(HRESULT.S_OK);
}
