我正在尝试在这篇文章中使用 c# 转换的代码： Releating an OLE IStorage file handle in C#
在这篇文章中，OP 似乎创建了一个自定义类 OLE32，它使用 pinvoke 来声明 IStorage 和 IOleObject 接口以及不同的方法。我也做过同样的事情。我的问题是，当我尝试调用 OLE32.OleCreateFromFile 时，我得到的返回值为 -2147467242 。
此返回值转换为十六进制的 0x80004016，根据我能找到的所有内容，这是以下错误：
禁用需要 DDE 窗口的 Ole1 服务
该方法应该输出一个 IOleObject，但 pOle 为空，并且此方法后面的方法失败。
有谁知道我为什么会收到此错误以及如何修复它？下面我包含了完整的代码以及我的 OLE32 类。
方法：
public static string ExportOleFile(string _inputFileName, string oleOutputFileName, string emfOutputFileName)
{
StringBuilder resultString = new StringBuilder();
string newInput = MultibyteToUnicodeNETOnly(_inputFileName, 1252);
OLE32.IStorage storage;
var result = OLE32.StgCreateStorageEx(oleOutputFileName,
Convert.ToInt32(OLE32.STGM.STGM_READWRITE | OLE32.STGM.STGM_SHARE_EXCLUSIVE | OLE32.STGM.STGM_CREATE | OLE32.STGM.STGM_TRANSACTED),
Convert.ToInt32(OLE32.STGFMT.STGFMT_DOCFILE),
0,
IntPtr.Zero,
IntPtr.Zero,
ref OLE32.IID_IStorage,
out storage
);
resultString.AppendLine("CreateStorageEx Result: " + result.ToString());
var CLSID_NULL = Guid.Empty;
OLE32.IOleObject pOle;
result = OLE32.OleCreateFromFile(
ref CLSID_NULL,
_inputFileName,
ref OLE32.IID_IOleObject,
(uint)OLE32.OLERENDER.OLERENDER_NONE,
IntPtr.Zero,
null,
storage,
out pOle
);
resultString.AppendLine("OleCreateFromFile Result: " + result.ToString());
try
{
result = OLE32.OleRun(pOle);
}
catch (Exception ex)
{
resultString.AppendLine(ex.ToString());
return resultString.ToString();
}
resultString.AppendLine("OleRun Result: " + result.ToString());
try
{
IntPtr unknownFromOle = Marshal.GetIUnknownForObject(pOle);
IntPtr unknownForDataObj;
Marshal.QueryInterface(unknownFromOle, ref OLE32.IID_IDataObject, out unknownForDataObj);
var pdo = Marshal.GetObjectForIUnknown(unknownForDataObj) as System.Runtime.InteropServices.ComTypes.IDataObject;
var fetc = new System.Runtime.InteropServices.ComTypes.FORMATETC();
fetc.cfFormat = (short)OLE32.CLIPFORMAT.CF_ENHMETAFILE;
fetc.dwAspect = System.Runtime.InteropServices.ComTypes.DVASPECT.DVASPECT_CONTENT;
fetc.lindex = -1;
fetc.ptd = IntPtr.Zero;
fetc.tymed = System.Runtime.InteropServices.ComTypes.TYMED.TYMED_ENHMF;
var stgm = new System.Runtime.InteropServices.ComTypes.STGMEDIUM();
stgm.unionmember = IntPtr.Zero;
stgm.tymed = System.Runtime.InteropServices.ComTypes.TYMED.TYMED_ENHMF;
pdo.GetData(ref fetc, out stgm);
var hemf = GDI32.CopyEnhMetaFile(stgm.unionmember, emfOutputFileName);
storage.Commit((int)OLE32.STGC.DEFAULT);
pOle.Close(0);
GDI32.DeleteEnhMetaFile(stgm.unionmember);
GDI32.DeleteEnhMetaFile(hemf);
}
catch (Exception ex)
{
resultString.AppendLine(ex.ToString());
return resultString.ToString();
}
return resultString.ToString();
}
OLE32.cs：
public static class OLE32
{
[StructLayout(LayoutKind.Sequential)]
public struct STGOPTIONS
{
ushort usVersion;
ushort reserved;
ulong ulSectorSize;
[MarshalAsAttribute(UnmanagedType.LPWStr)]
public string pwcsTemplateFile;
};
public enum OLERENDER
{
OLERENDER_NONE = 0,
OLERENDER_DRAW = 1,
OLERENDER_FORMAT = 2,
OLERENDER_ASIS = 3
}
internal enum CLIPFORMAT : int
{
CF_TEXT = 1,
CF_BITMAP = 2,
CF_METAFILEPICT = 3,
CF_SYLK = 4,
CF_DIF = 5,
CF_TIFF = 6,
CF_OEMTEXT = 7,
CF_DIB = 8,
CF_PALETTE = 9,
CF_PENDATA = 10,
CF_RIFF = 11,
CF_WAVE = 12,
CF_UNICODETEXT = 13,
CF_ENHMETAFILE = 14,
CF_HDROP = 15,
CF_LOCALE = 16,
CF_MAX = 17,
CF_OWNERDISPLAY = 0x80,
CF_DSPTEXT = 0x81,
CF_DSPBITMAP = 0x82,
CF_DSPMETAFILEPICT = 0x83,
CF_DSPENHMETAFILE = 0x8E,
}
internal enum STGFMT : int
{
STGFMT_STORAGE = 0,
STGFMT_FILE = 3,
STGFMT_ANY = 4,
STGFMT_DOCFILE = 5
}
[Flags]
internal enum STGM : int
{
STGM_READ = 0x0,
STGM_WRITE = 0x1,
STGM_READWRITE = 0x2,
STGM_SHARE_DENY_NONE = 0x40,
STGM_SHARE_DENY_READ = 0x30,
STGM_SHARE_DENY_WRITE = 0x20,
STGM_SHARE_EXCLUSIVE = 0x10,
STGM_PRIORITY = 0x40000,
STGM_CREATE = 0x1000,
STGM_CONVERT = 0x20000,
STGM_FAILIFTHERE = 0x0,
STGM_DIRECT = 0x0,
STGM_TRANSACTED = 0x10000,
STGM_NOSCRATCH = 0x100000,
STGM_NOSNAPSHOT = 0x200000,
STGM_SIMPLE = 0x8000000,
STGM_DIRECT_SWMR = 0x400000,
STGM_DELETEONRELEASE = 0x4000000
}
public enum STGC
{
DEFAULT = 0,
OVERWRITE = 1,
ONLYIFCURRENT = 2,
DANGEROUSLYCOMMITMERELYTODISKCACHE = 4,
CONSOLIDATE = 8
}
public static Guid IID_IDataObject = new Guid("{0000010e-0000-0000-C000-000000000046}");
public static Guid IID_IOleObject = new Guid("{00000112-0000-0000-C000-000000000046}");
public static Guid IID_IStorage = new Guid("0000000B-0000-0000-C000-000000000046");
[DllImport("ole32.dll")]
public static extern int StgCreateStorageEx([MarshalAs(UnmanagedType.LPWStr)] string
pwcsName, int grfMode, int stgfmt, int grfAttrs, IntPtr pStgOptions, IntPtr reserved2, ref Guid riid,
out IStorage ppObjectOpen);
[DllImport("ole32.dll")]
public static extern int OleCreateFromFile([In] ref Guid rclsid,
[MarshalAs(UnmanagedType.LPWStr)] string lpszFileName, ref Guid riid,
uint renderopt, IntPtr pFormatEtc, IOleClientSite pClientSite,
IStorage pStg, out IOleObject ppvObj);
[DllImport("ole32.dll")]
public static extern int OleRun([MarshalAs(UnmanagedType.IUnknown)] object pUnknown);
[ComImport]
[Guid("00000118-0000-0000-C000-000000000046")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOleClientSite
{
void SaveObject();
void GetMoniker(uint dwAssign, uint dwWhichMoniker, ref object ppmk);
void GetContainer(ref object ppContainer);
void ShowObject();
void OnShowWindow(bool fShow);
void RequestNewObjectLayout();
}
[ComImport]
[Guid("0000000b-0000-0000-C000-000000000046")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IStorage
{
void CreateStream(
/* [string][in] */ string pwcsName,
/* [in] */ uint grfMode,
/* [in] */ uint reserved1,
/* [in] */ uint reserved2,
/* [out] */ out IStream ppstm);
void OpenStream(
/* [string][in] */ string pwcsName,
/* [unique][in] */ IntPtr reserved1,
/* [in] */ uint grfMode,
/* [in] */ uint reserved2,
/* [out] */ out IStream ppstm);
void CreateStorage(
/* [string][in] */ string pwcsName,
/* [in] */ uint grfMode,
/* [in] */ uint reserved1,
/* [in] */ uint reserved2,
/* [out] */ out IStorage ppstg);
void OpenStorage(
/* [string][unique][in] */ string pwcsName,
/* [unique][in] */ IStorage pstgPriority,
/* [in] */ uint grfMode,
/* [unique][in] */ IntPtr snbExclude,
/* [in] */ uint reserved,
/* [out] */ out IStorage ppstg);
void CopyTo(
/* [in] */ uint ciidExclude,
/* [size_is][unique][in] */ Guid rgiidExclude, // should this be an array?
/* [unique][in] */ IntPtr snbExclude,
/* [unique][in] */ IStorage pstgDest);
void MoveElementTo(
/* [string][in] */ string pwcsName,
/* [unique][in] */ IStorage pstgDest,
/* [string][in] */ string pwcsNewName,
/* [in] */ uint grfFlags);
void Commit(
/* [in] */ uint grfCommitFlags);
void Revert();
void EnumElements(
/* [in] */ uint reserved1,
/* [size_is][unique][in] */ IntPtr reserved2,
/* [in] */ uint reserved3,
/* [out] */ out IEnumSTATSTG ppenum);
void DestroyElement(
/* [string][in] */ string pwcsName);
void RenameElement(
/* [string][in] */ string pwcsOldName,
/* [string][in] */ string pwcsNewName);
void SetElementTimes(
/* [string][unique][in] */ string pwcsName,
/* [unique][in] */ System.Runtime.InteropServices.FILETIME pctime,
/* [unique][in] */ System.Runtime.InteropServices.FILETIME patime,
/* [unique][in] */ System.Runtime.InteropServices.FILETIME pmtime);
void SetClass(
/* [in] */ Guid clsid);
void SetStateBits(
/* [in] */ uint grfStateBits,
/* [in] */ uint grfMask);
void Stat(
/* [out] */ out System.Runtime.InteropServices.STATSTG pstatstg,
/* [in] */ uint grfStatFlag);
}
[ComImport]
[Guid("00000112-0000-0000-C000-000000000046")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOleObject
{
void SetClientSite(IOleClientSite pClientSite);
void GetClientSite(ref IOleClientSite ppClientSite);
void SetHostNames(object szContainerApp, object szContainerObj);
void Close(uint dwSaveOption);
void SetMoniker(uint dwWhichMoniker, object pmk);
void GetMoniker(uint dwAssign, uint dwWhichMoniker, object ppmk);
void InitFromData(IDataObject pDataObject, bool fCreation, uint dwReserved);
void GetClipboardData(uint dwReserved, ref IDataObject ppDataObject);
void DoVerb(uint iVerb, uint lpmsg, object pActiveSite, uint lindex, uint hwndParent, uint lprcPosRect);
void EnumVerbs(ref object ppEnumOleVerb);
void Update();
void IsUpToDate();
void GetUserClassID(uint pClsid);
void GetUserType(uint dwFormOfType, uint pszUserType);
void SetExtent(uint dwDrawAspect, uint psizel);
void GetExtent(uint dwDrawAspect, uint psizel);
void Advise(object pAdvSink, uint pdwConnection);
void Unadvise(uint dwConnection);
void EnumAdvise(ref object ppenumAdvise);
void GetMiscStatus(uint dwAspect, uint pdwStatus);
void SetColorScheme(object pLogpal);
};
[ComImport]
[Guid("0000000d-0000-0000-C000-000000000046")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumSTATSTG
{
// The user needs to allocate an STATSTG array whose size is celt.
[PreserveSig]
uint
Next(
uint celt,
[MarshalAs(UnmanagedType.LPArray), Out]
System.Runtime.InteropServices.STATSTG[] rgelt,
out uint pceltFetched
);
void Skip(uint celt);
void Reset();
[return: MarshalAs(UnmanagedType.Interface)]
IEnumSTATSTG Clone();
}
[ComImport, Guid("0000000c-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IStream
{
void Read([Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] byte[] pv, uint cb, out uint pcbRead);
void Write([MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] byte[] pv, uint cb, out uint pcbWritten);
void Seek(long dlibMove, uint dwOrigin, out long plibNewPosition);
void SetSize(long libNewSize);
void CopyTo(IStream pstm, long cb, out long pcbRead, out long pcbWritten);
void Commit(uint grfCommitFlags);
void Revert();
void LockRegion(long libOffset, long cb, uint dwLockType);
void UnlockRegion(long libOffset, long cb, uint dwLockType);
void Stat(out System.Runtime.InteropServices.STATSTG pstatstg, uint grfStatFlag);
void Clone(out IStream ppstm);
}
[ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("0000010E-0000-0000-C000-000000000046")]
public interface IDataObject
{
void GetData([In] ref FORMATETC format, out STGMEDIUM medium);
void GetDataHere([In] ref FORMATETC format, ref STGMEDIUM medium);
[PreserveSig]
int QueryGetData([In] ref FORMATETC format);
[PreserveSig]
int GetCanonicalFormatEtc([In] ref FORMATETC formatIn, out FORMATETC formatOut);
void SetData([In] ref FORMATETC formatIn, [In] ref STGMEDIUM medium, [MarshalAs(UnmanagedType.Bool)] bool release);
IEnumFORMATETC EnumFormatEtc(DATADIR direction);
[PreserveSig]
int DAdvise([In] ref FORMATETC pFormatetc, ADVF advf, IAdviseSink adviseSink, out int connection);
void DUnadvise(int connection);
[PreserveSig]
int EnumDAdvise(out IEnumSTATDATA enumAdvise);
}
}