画像ファイルをドロップすればRichTextBoxに画像を挿入することができますが、ダブルクリックしても編集することができません。編集可能なbmpオブジェクトを挿入するためにはどうすればいいのでしょうか？
参照の追加でMicrosoft.VisualStudio.OLE.Interop.dllを追加しておく必要があります。また
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using Microsoft.VisualStudio.OLE.Interop; using System.Runtime.InteropServices; |
をいれておきましょう。
IRichEditOleインターフェイスを取得する
IRichEditOle.InsertObjectメソッドを実行
これで可能ですが、そのためにはInsertObjectメソッドに渡すREOBJECTのメンバーをセットする必要があります。
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typedef struct _reobject { DWORD cbStruct; LONG cp; // どこに挿入するか CLSID clsid; // クラスID LPOLEOBJECT poleobj; // IOleObject LPSTORAGE pstg; // IStorage LPOLECLIENTSITE polesite; // IOleClientSite SIZEL sizel; // 表示サイズ DWORD dvaspect; // Display aspect used DWORD dwFlags; // Object status flag DWORD dwUser; } |
Contents
IRichEditOleを取得する方法
まずIRichEditOleインターフェイスを取得する必要があります。
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public partial class Form1 : Form { [ComImport(), Guid("00020D00-0000-0000-c000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IRichEditOle { [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetClientSite(out IOleClientSite site); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetObjectCount(); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetLinkCount(); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetObject(int iob, [In, Out] REOBJECT lpreobject, [MarshalAs(UnmanagedType.U4)]GETOBJECTOPTIONS flags); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int InsertObject(REOBJECT lpreobject); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ConvertObject(int iob, Guid rclsidNew, string lpstrUserTypeNew); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ActivateAs(Guid rclsid, Guid rclsidAs); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int SetHostNames(string lpstrContainerApp, string lpstrContainerObj); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int SetLinkAvailable(int iob, bool fAvailable); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int SetDvaspect(int iob, uint dvaspect); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int HandsOffStorage(int iob); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int SaveCompleted(int iob, IStorage lpstg); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int InPlaceDeactivate(); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ContextSensitiveHelp(bool fEnterMode); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetClipboardData([In, Out] ref CHARRANGE lpchrg, [MarshalAs(UnmanagedType.U4)] GETCLIPBOARDDATAFLAGS reco, out Microsoft.VisualStudio.OLE.Interop.IDataObject lplpdataobj); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ImportDataObject(Microsoft.VisualStudio.OLE.Interop.IDataObject lpdataobj, int cf, IntPtr hMetaPict); } [StructLayout(LayoutKind.Sequential)] public class REOBJECT { public int cbStruct = Marshal.SizeOf(typeof(REOBJECT)); // Size of structure public int cp; // Character position of object public Guid clsid; // Class ID of object public IOleObject poleobj; // OLE object interface public IStorage pstg; // Associated storage interface public IOleClientSite polesite; // Associated client site interface public Size sizel; // Size of object (may be 0,0) public uint dvAspect; // Display aspect to use public uint dwFlags; // Object status flags public uint dwUser; // Dword for user's use } } |
このなかにGETOBJECTOPTIONSとかGETCLIPBOARDDATAFLAGSがあります。そこで
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public partial class Form1 : Form { public enum GETOBJECTOPTIONS { REO_GETOBJ_NO_INTERFACES = 0x00000000, REO_GETOBJ_POLEOBJ = 0x00000001, REO_GETOBJ_PSTG = 0x00000002, REO_GETOBJ_POLESITE = 0x00000004, REO_GETOBJ_ALL_INTERFACES = 0x00000007, } [StructLayout(LayoutKind.Sequential)] public struct CHARRANGE { public int cpMin; public int cpMax; } public enum GETCLIPBOARDDATAFLAGS { RECO_PASTE = 0, RECO_DROP = 1, RECO_COPY = 2, RECO_CUT = 3, RECO_DRAG = 4 } [Flags(), ComVisible(false)] public enum REOOBJECTFLAGS : uint { REO_NULL = 0x00000000, // No flags REO_READWRITEMASK = 0x0000003F, // Mask out RO bits REO_DONTNEEDPALETTE = 0x00000020, // Object doesn't need palette REO_BLANK = 0x00000010, // Object is blank REO_DYNAMICSIZE = 0x00000008, // Object defines size always REO_INVERTEDSELECT = 0x00000004, // Object drawn all inverted if sel REO_BELOWBASELINE = 0x00000002, // Object sits below the baseline REO_RESIZABLE = 0x00000001, // Object may be resized REO_LINK = 0x80000000, // Object is a link (RO) REO_STATIC = 0x40000000, // Object is static (RO) REO_SELECTED = 0x08000000, // Object selected (RO) REO_OPEN = 0x04000000, // Object open in its server (RO) REO_INPLACEACTIVE = 0x02000000, // Object in place active (RO) REO_HILITED = 0x01000000, // Object is to be hilited (RO) REO_LINKAVAILABLE = 0x00800000, // Link believed available (RO) REO_GETMETAFILE = 0x00400000 // Object requires metafile (RO) } } |
も必要です。
またAPI関数も使うので以下を記述します。
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public partial class Form1 : Form { [DllImport("ole32.dll")] public static extern int CreateILockBytesOnHGlobal(IntPtr hGlobal, [MarshalAs(UnmanagedType.Bool)] bool fDeleteOnRelease, [Out] out ILockBytes ppLkbyt); [DllImport("ole32.dll")] public static extern int StgCreateDocfileOnILockBytes(ILockBytes plkbyt, uint grfMode, uint reserved, out IStorage ppstgOpen); [DllImport("ole32.dll")] public static extern int OleSetContainedObject([MarshalAs(UnmanagedType.IUnknown)] object pUnk, bool fContained); [DllImport("ole32.dll")] public static extern int OleCreateFromFile([In] ref Guid rclsid, [MarshalAs(UnmanagedType.LPWStr)] string lpszFileName, [In] ref Guid riid, uint renderopt, [In] IntPtr pFormatEtc, IOleClientSite pClientSite, IStorage pStg, [MarshalAs(UnmanagedType.IUnknown)] out object ppvObj); [DllImport("User32", CharSet = CharSet.Auto)] public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, out IRichEditOle lParam); } |
まず、IRichEditOleを取得するには
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public const int WM_USER = 0x0400; public const int EM_GETOLEINTERFACE = WM_USER + 60; IRichEditOle richEditOle = null; SendMessage(rictTextBox1.Handle, EM_GETOLEINTERFACE, 0, out richEditOle); |
これで取得できます。
IOleClientSiteを取得する方法
IRichEditOleが取得できたらIOleClientSiteを取得します。
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IOleClientSite pOleClientSite; int hr = richEditOle.GetClientSite(out pOleClientSite); |
とやればIOleClientSiteも取得できます。
IStorageを取得する方法
またIStorageは
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ILockBytes pLockBytes; int hr = CreateILockBytesOnHGlobal(IntPtr.Zero, true, out pLockBytes); int STGM_READWRITE = 0x2; int STGM_CREATE = 0x1000; int STGM_SHARE_EXCLUSIVE = 0x10; hr = StgCreateDocfileOnILockBytes(pLockBytes, (uint)(STGM_SHARE_EXCLUSIVE | STGM_CREATE | STGM_READWRITE), 0, out pStorage); |
IOleObjectを取得する方法
IOleObjectはIOleClientSiteとIStorageを利用して
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Guid IID_IOleObject = new Guid("{00000112-0000-0000-C000-000000000046}"); Guid CLSID_NULL = new Guid("{00000000-0000-0000-0000-000000000000}"); object pOleObjectOut; hr = OleCreateFromFile(ref CLSID_NULL, strFilename, ref IID_IOleObject, (uint)OLERENDER.OLERENDER_DRAW, IntPtr.Zero, pOleClientSite, pStorage, out pOleObjectOut); IOleObject OleObject = (IOleObject)pOleObjectOut; |
で取得できます。
ClassIDを取得する方法
ClassIDはIOleObjectを利用して
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Guid guid; OleObject.GetUserClassID(out guid); |
仕上げ
あとはこれらをREOBJECTにセットします。
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REOBJECT reoObject = new REOBJECT(); reoObject.cp = rictTextBox1.SelectionStart; reoObject.clsid = guid; reoObject.pstg = pStorage; reoObject.poleobj = OleObject; reoObject.polesite = pOleClientSite; reoObject.dvAspect = (uint)(DVASPECT.DVASPECT_CONTENT); reoObject.dwFlags = (uint)(REOOBJECTFLAGS.REO_RESIZABLE | REOOBJECTFLAGS.REO_BELOWBASELINE); reoObject.dwUser = 0; |
そしてInsertObjectを実行します。
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richEditOle.InsertObject(reoObject); |
終わったら後片付け。
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Marshal.ReleaseComObject(pLockBytes); Marshal.ReleaseComObject(pOleClientSite); Marshal.ReleaseComObject(pStorage); Marshal.ReleaseComObject(OleObject); Marshal.ReleaseComObject(pLockBytes); Marshal.ReleaseComObject(richEditOle); |
よく使うかもしれないのでライブラリ化してもいいかも
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namespace RichTextBoxOle { public class RichTextBoxOle { [DllImport("User32", CharSet = CharSet.Auto)] public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, out IRichEditOle lParam); [DllImport("ole32.dll")] public static extern int CreateILockBytesOnHGlobal(IntPtr hGlobal, [MarshalAs(UnmanagedType.Bool)] bool fDeleteOnRelease, [Out] out ILockBytes ppLkbyt); [DllImport("ole32.dll")] public static extern int StgCreateDocfileOnILockBytes(ILockBytes plkbyt, uint grfMode, uint reserved, out IStorage ppstgOpen); [DllImport("ole32.dll")] public static extern int OleSetContainedObject([MarshalAs(UnmanagedType.IUnknown)] object pUnk, bool fContained); [DllImport("ole32.dll")] public static extern int OleCreateFromFile([In] ref Guid rclsid, [MarshalAs(UnmanagedType.LPWStr)] string lpszFileName, [In] ref Guid riid, uint renderopt, [In] IntPtr pFormatEtc, IOleClientSite pClientSite, IStorage pStg, [MarshalAs(UnmanagedType.IUnknown)] out object ppvObj); [ComImport(), Guid("00020D00-0000-0000-c000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IRichEditOle { [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetClientSite(out IOleClientSite site); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetObjectCount(); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetLinkCount(); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetObject(int iob, [In, Out] REOBJECT lpreobject, [MarshalAs(UnmanagedType.U4)]GETOBJECTOPTIONS flags); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int InsertObject(REOBJECT lpreobject); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ConvertObject(int iob, Guid rclsidNew, string lpstrUserTypeNew); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ActivateAs(Guid rclsid, Guid rclsidAs); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int SetHostNames(string lpstrContainerApp, string lpstrContainerObj); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int SetLinkAvailable(int iob, bool fAvailable); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int SetDvaspect(int iob, uint dvaspect); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int HandsOffStorage(int iob); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int SaveCompleted(int iob, IStorage lpstg); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int InPlaceDeactivate(); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ContextSensitiveHelp(bool fEnterMode); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int GetClipboardData([In, Out] ref CHARRANGE lpchrg, [MarshalAs(UnmanagedType.U4)] GETCLIPBOARDDATAFLAGS reco, out Microsoft.VisualStudio.OLE.Interop.IDataObject lplpdataobj); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ImportDataObject(Microsoft.VisualStudio.OLE.Interop.IDataObject lpdataobj, int cf, IntPtr hMetaPict); } [StructLayout(LayoutKind.Sequential)] public class REOBJECT { public int cbStruct = Marshal.SizeOf(typeof(REOBJECT)); // Size of structure public int cp; // Character position of object public Guid clsid; // Class ID of object public IOleObject poleobj; // OLE object interface public IStorage pstg; // Associated storage interface public IOleClientSite polesite; // Associated client site interface public Size sizel; // Size of object (may be 0,0) public uint dvAspect; // Display aspect to use public uint dwFlags; // Object status flags public uint dwUser; // Dword for user's use } public enum GETOBJECTOPTIONS { REO_GETOBJ_NO_INTERFACES = 0x00000000, REO_GETOBJ_POLEOBJ = 0x00000001, REO_GETOBJ_PSTG = 0x00000002, REO_GETOBJ_POLESITE = 0x00000004, REO_GETOBJ_ALL_INTERFACES = 0x00000007, } [StructLayout(LayoutKind.Sequential)] public struct CHARRANGE { public int cpMin; public int cpMax; } public enum GETCLIPBOARDDATAFLAGS { RECO_PASTE = 0, RECO_DROP = 1, RECO_COPY = 2, RECO_CUT = 3, RECO_DRAG = 4 } [Flags(), ComVisible(false)] public enum REOOBJECTFLAGS : uint { REO_NULL = 0x00000000, // No flags REO_READWRITEMASK = 0x0000003F, // Mask out RO bits REO_DONTNEEDPALETTE = 0x00000020, // Object doesn't need palette REO_BLANK = 0x00000010, // Object is blank REO_DYNAMICSIZE = 0x00000008, // Object defines size always REO_INVERTEDSELECT = 0x00000004, // Object drawn all inverted if sel REO_BELOWBASELINE = 0x00000002, // Object sits below the baseline REO_RESIZABLE = 0x00000001, // Object may be resized REO_LINK = 0x80000000, // Object is a link (RO) REO_STATIC = 0x40000000, // Object is static (RO) REO_SELECTED = 0x08000000, // Object selected (RO) REO_OPEN = 0x04000000, // Object open in its server (RO) REO_INPLACEACTIVE = 0x02000000, // Object in place active (RO) REO_HILITED = 0x01000000, // Object is to be hilited (RO) REO_LINKAVAILABLE = 0x00800000, // Link believed available (RO) REO_GETMETAFILE = 0x00400000 // Object requires metafile (RO) } static public void InsertFileBmpIfImage(RichTextBox rich, string filePath, int cp) { try { Image image = Image.FromFile(filePath); string temp = Application.StartupPath + "\\abc.bmp"; image.Save(temp, ImageFormat.Bmp); InsertFile(rich, temp, cp); System.IO.File.Delete(temp); } catch { InsertFile(rich, filePath, cp); } } static public void InsertFile(RichTextBox rich, string filePath, int cp) { int WM_USER = 0x0400; int EM_GETOLEINTERFACE = WM_USER + 60; IRichEditOle richEditOle = null; SendMessage(rich.Handle, EM_GETOLEINTERFACE, 0, out richEditOle); IOleClientSite pOleClientSite; int hr = richEditOle.GetClientSite(out pOleClientSite); ILockBytes pLockBytes; hr = CreateILockBytesOnHGlobal(IntPtr.Zero, true, out pLockBytes); IStorage pStorage; int STGM_READWRITE = 0x2; int STGM_CREATE = 0x1000; int STGM_SHARE_EXCLUSIVE = 0x10; hr = StgCreateDocfileOnILockBytes(pLockBytes, (uint)(STGM_SHARE_EXCLUSIVE | STGM_CREATE | STGM_READWRITE), 0, out pStorage); Guid IID_IOleObject = new Guid("{00000112-0000-0000-C000-000000000046}"); Guid CLSID_NULL = new Guid("{00000000-0000-0000-0000-000000000000}"); object pOleObjectOut; hr = OleCreateFromFile(ref CLSID_NULL, filePath, ref IID_IOleObject, (uint)OLERENDER.OLERENDER_DRAW, IntPtr.Zero, pOleClientSite, pStorage, out pOleObjectOut); IOleObject OleObject = (IOleObject)pOleObjectOut; Guid guid; OleObject.GetUserClassID(out guid); REOBJECT reoObject = new REOBJECT(); reoObject.cp = cp; reoObject.clsid = guid; reoObject.pstg = pStorage; reoObject.poleobj = OleObject; reoObject.polesite = pOleClientSite; reoObject.dvAspect = (uint)(DVASPECT.DVASPECT_CONTENT); reoObject.dwFlags = (uint)(REOOBJECTFLAGS.REO_RESIZABLE | REOOBJECTFLAGS.REO_BELOWBASELINE); reoObject.dwUser = 0; richEditOle.InsertObject(reoObject); Marshal.ReleaseComObject(pLockBytes); Marshal.ReleaseComObject(pOleClientSite); Marshal.ReleaseComObject(pStorage); Marshal.ReleaseComObject(OleObject); Marshal.ReleaseComObject(pLockBytes); Marshal.ReleaseComObject(richEditOle); } } } |
