🚀 go-pugleaf

I dont understand this situation ... i'm using fwrite to write one struct to
file and after that to write array of classes ...
Wierd thing is when i read it from file just after writing to it, everything
works well but after restarting application i can read only struct
information and on class loading i receive access violation ...

struct sGroupInfo {
    short sNameLength;
    char strGroupName [25];
    short iNumberOfItems;
    };

class TTBarButton : public TCurrentBar
{
private:
    int FButtonID;
    Graphics::TBitmap *FIconGlyph;
    TIcon *FIcon;
    String FHint;
    String FAppPath;
    int FIconIndex;
    void SetIconGlyph (Graphics::TBitmap *Value);
    void SetAppPath (String AppName);
public:
    TPoint GridPosition;
    TTBarButton operator= (TTBarButton tb);
    __fastcall TTBarButton();
    __fastcall ~TTBarButton();
    __property Graphics::TBitmap *IconGlyph = {read=FIconGlyph,
write=SetIconGlyph};
    __property TIcon *Icon = {read=FIcon, write=FIcon};
    __property int ButtonID = {read=FButtonID, write=FButtonID};
    __property int IconIndex = {read=FIconIndex, write=FIconIndex};
    __property String Hint = {read=FHint, write=FHint};
    __property String AppPath = {read=FAppPath, write=SetAppPath};
};

    sGroup.sNameLength = strGroupName.Length ();
    strcpy (sGroup.strGroupName, strGroupName.c_str ());
    fwrite(&sGroup, sizeof (sGroup)+1, 1, stream); // write group name
length

    for (int i = 0; i < frmTBar->CBZ_Toolbar->CurrentBar->Count; i++) {
        fwrite(&frmTBar->CBZ_Toolbar->CurrentBar->cBZButtons[i],
sizeof(frmTBar->CBZ_Toolbar->CurrentBar->cBZButtons[i])+1, 1, stream); //
write struct s to file
        }

thanx