The following interface is available:
/// <summary> /// Represents a collection of strings indexed by locale name. /// </summary> [ComImport] [Guid("08256209-099a-4b34-b86d-c22b110e7771")] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IDWriteLocalizedStrings { /// <summary> /// Gets the number of language/string pairs. /// </summary> uint GetCount(); /// <summary> /// Gets the index of the item with the specified locale name. /// </summary> /// <param name="localeName">Locale name to look for.</param> /// <param name="index">Receives the zero-based index of the locale name/string pair.</param> /// <param name="exists">Receives TRUE if the locale name exists or FALSE if not.</param> /// <returns> /// Standard HRESULT error code. If the specified locale name does not exist, the return value is S_OK, /// but *index is UINT_MAX and *exists is FALSE. /// </returns> [PreserveSig] int FindLocaleName([MarshalAs(UnmanagedType.LPWStr)] string localeName, out uint index, [MarshalAs(UnmanagedType.Bool)] out bool exists); /// <summary> /// Gets the length in characters (not including the null terminator) of the locale name with the specified index. /// </summary> /// <param name="index">Zero-based index of the locale name.</param> /// <param name="length">Receives the length in characters, not including the null terminator.</param> /// <returns> /// Standard HRESULT error code. /// </returns> [PreserveSig] int GetLocaleNameLength(uint index, out uint length); /// <summary> /// Copies the locale name with the specified index to the specified array. /// </summary> /// <param name="index">Zero-based index of the locale name.</param> /// <param name="localeName">Character array that receives the locale name.</param> /// <param name="size"> /// Size of the array in characters. The size must include space for the terminating /// null character. /// </param> /// <returns> /// Standard HRESULT error code. /// </returns> [PreserveSig] int GetLocaleName(uint index, [MarshalAs(UnmanagedType.LPArray)] [In] ref byte[] localeName, uint size); /// <summary> /// Gets the length in characters (not including the null terminator) of the string with the specified index. /// </summary> /// <param name="index">Zero-based index of the string.</param> /// <param name="length">Receives the length in characters, not including the null terminator.</param> /// <returns> /// Standard HRESULT error code. /// </returns> [PreserveSig] int GetStringLength(uint index, out uint length); /// <summary> /// Copies the string with the specified index to the specified array. /// </summary> /// <param name="index">Zero-based index of the string.</param> /// <param name="stringBuffer">Character array that receives the string.</param> /// <param name="size"> /// Size of the array in characters. The size must include space for the terminating /// null character. /// </param> /// <returns> /// Standard HRESULT error code. /// </returns> [PreserveSig] int GetString(uint index, [MarshalAs(UnmanagedType.LPWStr)] out string stringBuffer, uint size); } But the original interface is defined like this:
/// <summary> /// Represents a collection of strings indexed by locale name. /// </summary> interface DWRITE_DECLARE_INTERFACE("08256209-099a-4b34-b86d-c22b110e7771") IDWriteLocalizedStrings : public IUnknown { /// <summary> /// Gets the number of language/string pairs. /// </summary> STDMETHOD_(UINT32, GetCount)() PURE; /// <summary> /// Gets the index of the item with the specified locale name. /// </summary> /// <param name="localeName">Locale name to look for.</param> /// <param name="index">Receives the zero-based index of the locale name/string pair.</param> /// <param name="exists">Receives TRUE if the locale name exists or FALSE if not.</param> /// <returns> /// Standard HRESULT error code. If the specified locale name does not exist, the return value is S_OK, /// but *index is UINT_MAX and *exists is FALSE. /// </returns> STDMETHOD(FindLocaleName)( _In_z_ WCHAR const* localeName, _Out_ UINT32* index, _Out_ BOOL* exists ) PURE; /// <summary> /// Gets the length in characters (not including the null terminator) of the locale name with the specified index. /// </summary> /// <param name="index">Zero-based index of the locale name.</param> /// <param name="length">Receives the length in characters, not including the null terminator.</param> /// <returns> /// Standard HRESULT error code. /// </returns> STDMETHOD(GetLocaleNameLength)( UINT32 index, _Out_ UINT32* length ) PURE; /// <summary> /// Copies the locale name with the specified index to the specified array. /// </summary> /// <param name="index">Zero-based index of the locale name.</param> /// <param name="localeName">Character array that receives the locale name.</param> /// <param name="size">Size of the array in characters. The size must include space for the terminating /// null character.</param> /// <returns> /// Standard HRESULT error code. /// </returns> STDMETHOD(GetLocaleName)( UINT32 index, _Out_writes_z_(size) WCHAR* localeName, UINT32 size ) PURE; /// <summary> /// Gets the length in characters (not including the null terminator) of the string with the specified index. /// </summary> /// <param name="index">Zero-based index of the string.</param> /// <param name="length">Receives the length in characters, not including the null terminator.</param> /// <returns> /// Standard HRESULT error code. /// </returns> STDMETHOD(GetStringLength)( UINT32 index, _Out_ UINT32* length ) PURE; /// <summary> /// Copies the string with the specified index to the specified array. /// </summary> /// <param name="index">Zero-based index of the string.</param> /// <param name="stringBuffer">Character array that receives the string.</param> /// <param name="size">Size of the array in characters. The size must include space for the terminating /// null character.</param> /// <returns> /// Standard HRESULT error code. /// </returns> STDMETHOD(GetString)( UINT32 index, _Out_writes_z_(size) WCHAR* stringBuffer, UINT32 size ) PURE; }; I understand that I have not correctly defined 2 methods: GetLocaleName and GetString .
But I have no idea what to transfer to there, because as the output string does not match, and when passed as a pointer to an array, heap damage occurs. How to transfer these 2 methods to c# ?
