text: #ifndef LIBXL_IBOOKT_H
  #define LIBXL_IBOOKT_H
  
  #include <stddef.h>
  #include "setup.h"
  #include "enum.h"
  
  namespace libxl {
  
      template<class TCHAR> struct ISheetT;
      template<class TCHAR> struct IFormatT;
      template<class TCHAR> struct IFontT;
  
      template<class TCHAR>
      struct IBookT
      {
          virtual             bool XLAPIENTRY load(const TCHAR* filename) = 0;
          virtual             bool XLAPIENTRY save(const TCHAR* filename) = 0;
  
          virtual             bool XLAPIENTRY loadRaw(const char* data, unsigned size) = 0;
          virtual             bool XLAPIENTRY saveRaw(const char** data, unsigned* size) = 0;
  
          virtual  ISheetT<TCHAR>* XLAPIENTRY addSheet(const TCHAR* name, ISheetT<TCHAR>* initSheet = 0) = 0;
          virtual  ISheetT<TCHAR>* XLAPIENTRY insertSheet(int index, const TCHAR* name, ISheetT<TCHAR>* initSheet = 0) = 0;
          virtual  ISheetT<TCHAR>* XLAPIENTRY getSheet(int index) const = 0;
          virtual        SheetType XLAPIENTRY sheetType(int index) const = 0;
          virtual             bool XLAPIENTRY delSheet(int index) = 0;
          virtual              int XLAPIENTRY sheetCount() const = 0;
  
          virtual IFormatT<TCHAR>* XLAPIENTRY addFormat(IFormatT<TCHAR>* initFormat = 0) = 0;
          virtual   IFontT<TCHAR>* XLAPIENTRY addFont(IFontT<TCHAR>* initFont = 0) = 0;
          virtual              int XLAPIENTRY addCustomNumFormat(const TCHAR* customNumFormat) = 0;
          virtual     const TCHAR* XLAPIENTRY customNumFormat(int fmt) = 0;
  
          virtual IFormatT<TCHAR>* XLAPIENTRY format(int index) = 0;
          virtual              int XLAPIENTRY formatSize() = 0;
  
          virtual   IFontT<TCHAR>* XLAPIENTRY font(int index) = 0;
          virtual              int XLAPIENTRY fontSize() = 0;
  
          virtual           double XLAPIENTRY datePack(int year, int month, int day, int hour = 0, int min = 0, int sec = 0, int msec = 0) = 0;
          virtual             bool XLAPIENTRY dateUnpack(double value, int* year, int* month, int* day, int* hour = 0, int* min = 0, int* sec = 0, int* msec = 0) = 0;
  
          virtual            Color XLAPIENTRY colorPack(int red, int green, int blue) = 0;
          virtual             void XLAPIENTRY colorUnpack(Color color, int* red, int* green, int* blue) = 0;
  
          virtual              int XLAPIENTRY activeSheet() const = 0;
          virtual             void XLAPIENTRY setActiveSheet(int index) = 0;
  
          virtual              int XLAPIENTRY pictureSize() const = 0;
          virtual      PictureType XLAPIENTRY getPicture(int index, const char** data, unsigned* size) const = 0;
  
          virtual              int XLAPIENTRY addPicture(const TCHAR* filename) = 0;
          virtual              int XLAPIENTRY addPicture2(const char* data, unsigned size) = 0;
  
          virtual     const TCHAR* XLAPIENTRY defaultFont(int* fontSize) = 0;
          virtual             void XLAPIENTRY setDefaultFont(const TCHAR* fontName, int fontSize) = 0;
  
          virtual             bool XLAPIENTRY refR1C1() const = 0;
          virtual             void XLAPIENTRY setRefR1C1(bool refR1C1 = true) = 0;
  
          virtual             void XLAPIENTRY setKey(const TCHAR* name, const TCHAR* key) = 0;
  
          virtual             bool XLAPIENTRY rgbMode() = 0;
          virtual             void XLAPIENTRY setRgbMode(bool rgbMode = true) = 0;
  
          virtual              int XLAPIENTRY version() const = 0;
          virtual              int XLAPIENTRY biffVersion() const = 0;
  
          virtual             bool XLAPIENTRY isDate1904() const = 0;
          virtual             void XLAPIENTRY setDate1904(bool date1904 = true) = 0;
  
          virtual             bool XLAPIENTRY isTemplate() const = 0;
          virtual             void XLAPIENTRY setTemplate(bool tmpl = true) = 0;
  
          virtual             bool XLAPIENTRY setLocale(const char* locale) = 0;
          virtual      const char* XLAPIENTRY errorMessage() const = 0;
  
          virtual             void XLAPIENTRY release() = 0;
  
          virtual                             ~IBookT() {}
      };
  
  }
  
  extern "C" XLAPI libxl::IBookT<char>* XLAPIENTRY xlCreateBookA();
  extern "C" XLAPI libxl::IBookT<wchar_t>* XLAPIENTRY xlCreateBookW();
  
  extern "C" XLAPI libxl::IBookT<char>* XLAPIENTRY xlCreateXMLBookA();
  extern "C" XLAPI libxl::IBookT<wchar_t>* XLAPIENTRY xlCreateXMLBookW();
  
  #endif
  