#pragma once

extern ATOM AtomMessage;
extern ATOM AtomWndObj; /* WNDOBJ list */
extern ATOM AtomLayer;
extern ATOM AtomFlashWndState;
extern BOOL g_bWindowSnapEnabled;

#define HAS_DLGFRAME(Style, ExStyle) \
            (((ExStyle) & WS_EX_DLGMODALFRAME) || \
            (((Style) & WS_DLGFRAME) && (!((Style) & WS_THICKFRAME))))

#define HAS_THICKFRAME(Style, ExStyle) \
            (((Style) & WS_THICKFRAME) && \
            (!(((Style) & (WS_DLGFRAME | WS_BORDER)) == WS_DLGFRAME)))

#define HAS_THINFRAME(Style, ExStyle) \
            (((Style) & WS_BORDER) || (!((Style) & (WS_CHILD | WS_POPUP))))

#define HAS_CLIENTFRAME(Style, ExStyle) \
            (((ExStyle) & WS_EX_CLIENTEDGE) || (!((Style) & (WS_CHILD | WS_POPUP))))

#define HAS_MENU(pWnd,style)  ((((style) & (WS_CHILD | WS_POPUP)) != WS_CHILD) && (pWnd->IDMenu) && IntIsMenu(UlongToHandle(pWnd->IDMenu)))

#define IntIsDesktopWindow(WndObj) \
  (WndObj->spwndParent == NULL)

#define IntIsBroadcastHwnd(hWnd) \
  (hWnd == HWND_BROADCAST || hWnd == HWND_TOPMOST)


#define IntWndBelongsToThread(WndObj, W32Thread) \
  ((WndObj->head.pti) && (WndObj->head.pti == W32Thread))

#define IntGetWndThreadId(WndObj) \
  PsGetThreadId(WndObj->head.pti->pEThread)

#define IntGetWndProcessId(WndObj) \
  PsGetProcessId(WndObj->head.pti->ppi->peProcess)

PWND FASTCALL ValidateHwndNoErr(HWND);
BOOL FASTCALL UserUpdateUiState(PWND Wnd, WPARAM wParam);
BOOL FASTCALL IntIsWindow(HWND hWnd);
HWND* FASTCALL IntWinListChildren(PWND Window);
HWND* FASTCALL IntWinListOwnedPopups(PWND Window);
VOID FASTCALL IntGetClientRect (PWND WindowObject, RECTL *Rect);
INT FASTCALL  IntMapWindowPoints(PWND FromWnd, PWND ToWnd, LPPOINT lpPoints, UINT cPoints);
BOOL FASTCALL IntIsChildWindow (PWND Parent, PWND Child);
VOID FASTCALL IntUnlinkWindow(PWND Wnd);
VOID FASTCALL IntLinkHwnd(PWND Wnd, HWND hWndPrev);
PWND FASTCALL IntGetParent(PWND Wnd);
VOID FASTCALL IntGetWindowBorderMeasures(PWND WindowObject, UINT *cx, UINT *cy);
BOOL FASTCALL IntShowOwnedPopups( PWND owner, BOOL fShow );
LRESULT FASTCALL IntDefWindowProc( PWND Window, UINT Msg, WPARAM wParam, LPARAM lParam, BOOL Ansi);
VOID FASTCALL IntNotifyWinEvent(DWORD, PWND, LONG, LONG, DWORD);
#define WINVER_WIN2K  _WIN32_WINNT_WIN2K
#define WINVER_WINNT4 _WIN32_WINNT_NT4
#define WINVER_WIN31  0x30A
PWND FASTCALL IntCreateWindow(CREATESTRUCTW* Cs,
                                        PLARGE_STRING WindowName,
                                        PCLS Class,
                                        PWND ParentWindow,
                                        PWND OwnerWindow,
                                        PVOID acbiBuffer,
                                        PDESKTOP pdeskCreated,
                                        DWORD dwVer );
PWND FASTCALL co_UserCreateWindowEx(CREATESTRUCTW* Cs,
                                    PUNICODE_STRING ClassName,
                                    PLARGE_STRING WindowName,
                                    PVOID acbiBuffer,
                                    DWORD dwVer );
BOOL FASTCALL IntEnableWindow(HWND,BOOL);
BOOL FASTCALL IntIsWindowVisible(PWND);
DWORD FASTCALL GetNCHitEx(PWND,POINT);
ULONG FASTCALL IntSetStyle(PWND,ULONG,ULONG);
PWND FASTCALL VerifyWnd(PWND);
PWND FASTCALL IntGetNonChildAncestor(PWND);
LONG FASTCALL co_UserSetWindowLong(HWND,DWORD,LONG,BOOL);
LONG_PTR FASTCALL co_UserSetWindowLongPtr(HWND, DWORD, LONG_PTR, BOOL);
HWND FASTCALL IntGetWindow(HWND,UINT);
LRESULT co_UserFreeWindow(PWND,PPROCESSINFO,PTHREADINFO,BOOLEAN);

#define HWND_TERMINATOR ((HWND)(ULONG_PTR)1)

typedef struct tagWINDOWLIST
{
    struct tagWINDOWLIST *pNextList;
    HWND *phwndLast;
    HWND *phwndEnd;
    PTHREADINFO pti;
    HWND ahwnd[ANYSIZE_ARRAY]; /* Terminated by HWND_TERMINATOR */
} WINDOWLIST, *PWINDOWLIST;

extern PWINDOWLIST gpwlList;
extern PWINDOWLIST gpwlCache;

#define WL_IS_BAD(pwl)   ((pwl)->phwndEnd <= (pwl)->phwndLast)
#define WL_CAPACITY(pwl) ((pwl)->phwndEnd - &((pwl)->ahwnd[0]))

PWINDOWLIST FASTCALL IntBuildHwndList(PWND pwnd, DWORD dwFlags, PTHREADINFO pti);
VOID FASTCALL IntFreeHwndList(PWINDOWLIST pwlTarget);
HWND FASTCALL IntFindWindow(PWND Parent, PWND ChildAfter, RTL_ATOM ClassAtom,
                            PUNICODE_STRING WindowName);

/* Undocumented dwFlags for IntBuildHwndList */
#define IACE_LIST  0x0002

#define IS_WND_CHILD(pWnd) ((pWnd)->style & WS_CHILD)
#define IS_WND_MENU(pWnd) ((pWnd)->pcls->atomClassName == gpsi->atomSysClass[ICLS_MENU])

// The IME-like windows are the IME windows and the IME UI windows.
// The IME window's class name is "IME".
// The IME UI window behaves the User Interface of IME for the user.
#define IS_WND_IMELIKE(pWnd) \
    (((pWnd)->pcls->style & CS_IME) || \
     ((pWnd)->pcls->atomClassName == gpsi->atomSysClass[ICLS_IME]))

extern BOOL gfIMEShowStatus;

BOOL FASTCALL IntWantImeWindow(PWND pwndTarget);
PWND FASTCALL co_IntCreateDefaultImeWindow(PWND pwndTarget, HINSTANCE hInst);
BOOL FASTCALL IntImeCanDestroyDefIMEforChild(PWND pImeWnd, PWND pwndTarget);
BOOL FASTCALL IntImeCanDestroyDefIME(PWND pImeWnd, PWND pwndTarget);
BOOL FASTCALL IntBroadcastImeShowStatusChange(PWND pImeWnd, BOOL bShow);
VOID FASTCALL IntNotifyImeShowStatus(PWND pImeWnd);
VOID FASTCALL IntCheckImeShowStatusInThread(PWND pImeWnd);

static inline
VOID
WndSetOwner(_Inout_ PWND pwnd, _In_opt_ PWND pwndOwner)
{
    /* First reference the new owner window */
    if (pwndOwner != NULL)
    {
        UserReferenceObject(pwndOwner);
    }

    /* Now dereference the previous owner window */
    if (pwnd->spwndOwner != NULL)
    {
        UserDereferenceObject(pwnd->spwndOwner);
    }

    pwnd->spwndOwner = pwndOwner;
}

/* EOF */