#define GWIN_ERROR_NONE 0
#define GWIN_ALREADY_CREATED    1
#define GWIN_REGISTER_CLASS_FAIL 2
#define GWIN_FAIL_CREATE         3

#define GWIN_TYPE_WINDOW         1
#define GWIN_TYPE_BUTTON         2
#define GWIN_TYPE_TABCONTROL     3
#define GWIN_TYPE_STATIC         4
#define GWIN_TYPE_MDICLIENT      5
#define GWIN_TYPE_EDIT           6
#define GWIN_TYPE_LISTBOX        7

#define GMENU_TYPE_UNKNOWN       0
#define GMENU_TYPE_MENU          1
#define GMENU_TYPE_POPUP         2

#define GPLACE_NONE              0
#define GPLACE_CLIENT            1
#define GPLACE_NORTH             2
#define GPLACE_SOUTH             3
#define GPLACE_EAST              4
#define GPLACE_WEST              5
#define GPLACE_NORTHEAST         6
#define GPLACE_NORTHWEST         7
#define GPLACE_SOUTHEAST         8
#define GPLACE_SOUTHWEST         9

class Menu;

class GWin {
public:
       typedef LRESULT(* CMDPROC)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);

       GWin(LPSTR type, CMDPROC initproc);
       GWin(LPSTR type);
       ~GWin();

       HINSTANCE hInst; // you probably shouldn't touch this, even though it's public - we'll probably make it private
       WNDCLASSEX wincl;

       HWND Create(GWin * parent, LPCTSTR classname, LPCTSTR name, int x, int y, int width, int height);
       HWND Create();
       HWND getWindowHandle();
       BOOL isWindow();
       void Destroy();
       static LRESULT Destroy(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       static LRESULT Quit(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       void Quit();
       static LRESULT CALLBACK WndProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lParam);
       static LRESULT defWindowProc(GWin * cwin, UINT message, WPARAM wParam, LPARAM lParam);
       UINT cursorInWindowPlace();
       HWND setCapture();
       BOOL clientToScreen(LPPOINT lpPoint);
       BOOL moveWindow(int X, int Y, int nWidth, int nHeight, BOOL bRepaint);
       //static int mapWindowPoints(GWin * wndFrom, GWin * wndTo, LPPOINT lpPoints, UINT cPoints); // not working, we don't really need it anyways
       GWin * getParent();

       // inits, only when using GWin::Create(void), otherwise ignored
       GWin * InitParent;
       LPSTR InitText;
       LPSTR InitClass;
       int InitCtrlId;

       ATOM setClassName(LPCTSTR name);
       int getLastError();
       BOOL showWindow(int nCmdShow);
       BOOL show();
       BOOL hide();
       BOOL setMenuRes(WORD res);
       void showLastError();
       BOOL isDialogMessage(MSG * msg);
       BOOL getClientRect(RECT * rect);
       BOOL getWindowRect(RECT * rect);
       BOOL setWindowPos(GWin * zwin, int x, int y, int cx, int cy, UINT flags);
       BOOL setClientChildSize(GWin * win);
       static LRESULT ClientChildSize(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       static void GlobalMessageLoop();
       HWND setFocus();
       char * getWindowText();        // creates a new [] char, must be deleted!
       BOOL setWindowText(LPSTR text);
       BOOL setWindowTextInt(int num, BOOL sign);
       UINT getWindowTextInt(BOOL * success, BOOL sign);
       static LRESULT Close(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT Close();
       BOOL Disable();
       BOOL Enable();
       int getWindowType();
       int setMenuCommand(short unsigned int cmd, CMDPROC proc);
       int removeMenuCommand(short unsigned int cmd);

       // mdiclient
       HWND CreateMDIClient(GWin * parent, int x, int y, int width, int height);

       // static box
       HWND CreateStaticBox(GWin * parent, LPSTR title, int ctrlID, int x, int y, int width, int height);

       // tabcontrol functions - I don't really like handling tabs, so someone else can complete the list
       HWND CreateTabControl(GWin * parent, int ctrlID, int x, int y, int width, int height);
       int TabInsert(int iItem, LPSTR title);
       int getCurrentTab();
       int setCurrentTab(int tabid);
       BOOL getTabInfo(int tabid, TC_ITEM * pitem);
       BOOL setTabInfo(int tabid, TC_ITEM * pitem);
       void getTabClientRect(RECT * rect);
       void tabctrlAdjustRect(BOOL fLarger, RECT FAR * prc);

       // edit functions
       HWND CreateEdit(GWin * parent, LPSTR text, int ctrlID, int x, int y, int width, int height);
       LRESULT charFromPos(short int x, short int y);
       //LRESULT exGetSel(CHARRANGE * lpchr);
       //LRESULT findText(UINT fuFlags, FINDTEXT * lpFindText);

       // ListBox functions
       HWND CreateListBox(GWin * parent, LPSTR text, int ctrlID, int x, int y, int width, int height);
       LRESULT LBAddString(LPSTR string);
       LRESULT LBSetTabStops(int tabs, int * tabstops);
       char * LBGetSelectedString();

       // button functions
       HWND CreateButton(GWin * parent, LPSTR value, int ctrlID, int x, int y, int width, int height);
       LRESULT buttonSetCheck(WPARAM chkstate);

       // Events
       LRESULT (*onEvent)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onCommand)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onCreate)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onButtonClick)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onStaticClick)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onClicked)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onDblClicked)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onDestroy)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onTabSelChange)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onTabSelChanging)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onSize)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onOk)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam); // just register a menu command
       //LRESULT (*onCancel)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onClose)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onEnable)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onDisable)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMove)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onBlur)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);   // currently only set up for edit controls EN_KILLFOCUS
       LRESULT (*onFocus)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);  // currently only set up for edit controls EN_SETFOCUS and BN_SETFOCUS
       LRESULT (*onSelChange)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onPaint)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onChange)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onUpdate)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onHScroll)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onVScroll)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMaxText)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onErrSpace)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onSelCancel)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onKeyDown)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onActivate)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onClickActivate)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam); // not defined in our <windows.h> file
       //LRESULT (*onDeactivate)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onCancelMode)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onChar)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onCharToItem)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onCompacting)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onCompareItem)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onContextMenu)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onDeadChar)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onDisplayChange)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onDrawItem)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onDropFiles)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onEnterIdle)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onEnterMenuLoop)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onEnterSizeMove)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onEraseBkGnd)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onExitMenuLoop)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onExitSizeMove)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onFontChange)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onHelp)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onInitDialog)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam); // I don't know if we need this or not
       LRESULT (*onInitMenu)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onInitMenuPopup)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onKeyUp)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onLButtonDblClick)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onLButtonDown)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onLButtonUp)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onMButtonDblClick)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMButtonDown)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onMButtonUp)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onMeasureItem)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMenuChar)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMenuSelect)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMouseActivate)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMouseWheel)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMouseMove)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onMoving)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCActivate)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCCalcSize)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCCreate)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCDestroy)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCHitTest)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onNCLButtonDblClick)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCLButtonDown)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCLButtonUp)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onNCMButtonDblClick)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCMButtonDown)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCMButtonUp)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCMouseMove)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCPaint)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onNCRButtonDblClick)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCRButtonDown)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNCRButtonUp)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNotify)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onNotifyFormat)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onPaintClipboard)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onPaletteChanged)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onPaletteIsChanging)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onParentNotify)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onPaste)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       /*LRESULT (*onPenEvent)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onPenMisc)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onPenMiscInfo)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);*/
       LRESULT (*onPrint)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onPrintClient)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onQuit)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam); // should be static and not associated with a window
       LRESULT (*onSetCursor)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onShowWindow)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       //LRESULT (*onSizeClipboard)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onSizing)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onStyleChanged)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onStyleChanging)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onSysChar)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onSysCommand)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onSysDeadChar)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onSysKeyDown)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onSysKeyUp)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onUndo)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onWindowPosChanged)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
       LRESULT (*onWindowPosChanging)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);

       // window params
       DWORD winStyleEx;
       LPCTSTR winName;
       DWORD winStyle;
       int winX;
       int winY;
       int winWidth;
       int winHeight;
       HWND winParent;
       //HMENU winMenu;
       LPVOID winParam;
       int visible;
       LONG UserLong;  // for the user's own use, we do not initialize or handle in any way
       LPVOID UserVoid;

       // message info
       /*HWND ProcHwnd;
       UINT ProcMsg;
       WPARAM ProcWParam;
       LPARAM ProcLParam;*/



private:
       void Init(LPSTR type);
       GWin * gparent;
       GWin * child_size;          // the window to be automatically sized on WM_SIZE
       HWND hwnd;
       int Type;

       HMENU hmenu;
       Menu *menu;

       MSG msg;
       int lastError;

       void DestroyWinData();

       // for a statically-accessible linked list of all objects for our static WndProc
       typedef struct winlinks_st {
               GWin * win;
               winlinks_st * nextlink;
       } * winlinks_t;
       static winlinks_t WinLink;     // first link
       void AddWinLink();
       void RemoveWinLink();
       static GWin * FindObject(HWND wnd);
       static GWin * FindObject(HWND wnd, HWND parentwnd);

       // for a linked list of menu commands
       typedef struct mclinks_st {
               short unsigned int cmd;
               LRESULT (*cmdfunc)(GWin * win, UINT message, WPARAM wParam, LPARAM lParam);
               mclinks_st * nextlink;
       } * mclinks_t;
       mclinks_t MCLink;
       mclinks_t FindMCLink(short unsigned int cmd);
       void RemoveAllMCLinks();


       static GWin * objCreatingWindow;

};

class GMain {
public:
      GMain();
      ~GMain();

      void Init(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR cmdline, int show);

      HINSTANCE hInstance;
      HINSTANCE hPrevInstance;
      LPSTR lpCmdLine;
      int nCmdShow;
      /*char * ExecutableDirectory;
      char * ExecutablePath;
      char * ExecutableName;*/
private:
};

class Menu {
public:
      Menu(LPSTR type);
      ~Menu();

private:
      HMENU hmenu;
      int Type;

};

// this class will handle registry calls
class GReg {
public:
       GReg();
       ~GReg();
       LONG OpenKey(HKEY pkey, LPCTSTR subkeyname, REGSAM sam);
       LONG CloseKey();
       LPBYTE QueryValue(LPTSTR name, LPDWORD type);

private:
       HKEY hkey;

};