Loads the character from the given file.
HRESULT LoadCharacter( OLECHAR* path, long filter, ICharacter* pchar, BOOL bCacheTextures );
A filter is specified to overcome potential ambiguity when more than one importer exists for the same file extension or when multiple file formats share the same file extension. The filter index should match that used by OPENFILENAME::nFilterIndex when using the list of filters obtained by calling IEditCharacter::GetImportFilterList. If the bCacheTextures parameter is non-zero then the caller is responsible for calling IEditCharacter::DestroyCharacter with the character to free the textures cached in the rendering device.