if(number <= 0)        return TRUE;    number = number < (MAX_SYSCURSORINDEX + 1) ?              number : (MAX_SYSCURSORINDEX + 1);    for(i = 0; i < number; i++) {        if ( !(SysCursor[i] = LoadSystemCursor(i)) )             goto error;    }	    return TRUE;error:    TerminateCursor();    return FALSE;}// The following function must be called at last. void TerminateCursor( void ){    int i;    if (!savedbits ) return;    free(savedbits);    free(cursorbits);    savedbits = NULL;    pCurCsr = NULL;    nShowCount = 0;     for(i = 0; i<= MAX_SYSCURSORINDEX; i++) {        if( SysCursor[i] ) {            free(SysCursor[i]->AndBits);            free(SysCursor[i]->XorBits);            free(SysCursor[i]);            SysCursor[i] = NULL;       }    }}HCURSOR GUIAPI GetCurrentCursor(void){    return (HCURSOR)pCurCsr;}// Cursor pointer shape and hiding and showing.static inline int boxleft(void){    if(!pCurCsr) return -100;    return curx - pCurCsr->xhotspot;}static inline int boxtop(void){    if(!pCurCsr) return -100;    return cury - pCurCsr->yhotspot;}#ifdef _USE_NEWGALstatic GAL_Rect csr_rect = {0, 0, CURSORWIDTH, CURSORHEIGHT};static void hidecursor (void){    csr_rect.x = oldboxleft;    csr_rect.y = oldboxtop;    csr_bmp.bmBits = savedbits;    GAL_SetClipRect (__gal_screen, NULL);    GAL_PutBox (__gal_screen, &csr_rect, &csr_bmp);     GAL_UpdateRects (__gal_screen, 1, &csr_rect);}static void showcursor (void){    int x, y;    x = boxleft ();    y = boxtop ();    csr_rect.x = x;    csr_rect.y = y;    csr_bmp.bmBits = savedbits;    GAL_SetClipRect (__gal_screen, NULL);    GAL_GetBox (__gal_screen, &csr_rect, &csr_bmp);    oldboxleft = x;    oldboxtop = y;    GAL_memcpy4 (cursorbits, savedbits, csrimgsize >> 2);#ifdef ASM_memandcpy4    ASM_memandcpy4 (cursorbits, pCurCsr->AndBits, csrimgsize >> 2);    ASM_memxorcpy4 (cursorbits, pCurCsr->XorBits, csrimgsize >> 2);#else    {        int i;        Uint32* andbits = (Uint32*) pCurCsr->AndBits;        Uint32* xorbits = (Uint32*) pCurCsr->XorBits;        Uint32* dst = (Uint32*) cursorbits;        for (i = 0; i < csrimgsize >> 2; i++) {            dst [i] &= andbits [i];            dst [i] ^= xorbits[i];        }    }#endif    csr_bmp.bmBits = cursorbits;    GAL_PutBox (__gal_screen, &csr_rect, &csr_bmp);    GAL_UpdateRects (__gal_screen, 1, &csr_rect);}#elsestatic void hidecursor (void){    GAL_SetGC (PHYSICALGC);    GAL_DisableClipping (PHYSICALGC);        GAL_PutBox (PHYSICALGC, oldboxleft, oldboxtop,                     CURSORWIDTH, CURSORHEIGHT, savedbits);}static void showcursor (void){    int x, y;    GAL_SetGC (PHYSICALGC);    x = boxleft ();    y = boxtop ();    GAL_DisableClipping (PHYSICALGC);    GAL_GetBox (PHYSICALGC, x, y, CURSORWIDTH, CURSORHEIGHT, savedbits);    oldboxleft = x;    oldboxtop = y;    memcpy (cursorbits, savedbits, csrimgsize);    {        int i;        Uint32* dst = (Uint32*) cursorbits;        Uint32* andbits = (Uint32*) pCurCsr->AndBits;        Uint32* xorbits = (Uint32*) pCurCsr->XorBits;        for (i = 0; i < csrimgsize >> 2; i++) {            dst [i] &= andbits [i];            dst [i] ^= xorbits[i];        }    }    GAL_EnableClipping (PHYSICALGC);    GAL_PutBox (PHYSICALGC, x, y, CURSORWIDTH, CURSORHEIGHT, cursorbits);}#endif /* _USE_NEWGAL */#endif /* _CURSOR_SUPPORT */// The return value indicates whether mouse has moved. // TRUE for moved.// NOTE that only server can call this function.BOOL RefreshCursor (int* x, int* y, int* button){    BOOL moved = FALSE;    IAL_GetMouseXY (x, y);    curx = *x;    cury = *y;    if (button)        *button = IAL_GetMouseButton ();    if (oldx != curx || oldy != cury) {#ifdef _CURSOR_SUPPORT        if (nShowCount >= 0 && pCurCsr) {            hidecursor ();            showcursor ();        }#endif /* _CURSOR_SUPPORT */        oldx = curx;        oldy = cury;        moved = TRUE;    }    return moved;}#ifdef _CURSOR_SUPPORT/* Always call with "setdef = FALSE" for clients at server side. */HCURSOR GUIAPI SetCursorEx (HCURSOR hcsr, BOOL setdef){    PCURSOR old, pcsr;    if (setdef) {        old = (PCURSOR) def_cursor;        def_cursor = hcsr;    }    else        old = pCurCsr;    if ((PCURSOR)hcsr == pCurCsr) {        return (HCURSOR) old;    }    pcsr = (PCURSOR)hcsr;    if (pCurCsr)        hidecursor();    pCurCsr = pcsr;    if (pCurCsr && nShowCount >= 0)        showcursor();    return (HCURSOR) old;}void ShowCursorForGDI (BOOL fShow, const RECT* prc){    int csrleft, csrright, csrtop, csrbottom;    int intleft, intright, inttop, intbottom;    csrleft = boxleft();    csrright = csrleft + CURSORWIDTH;    csrtop = boxtop();    csrbottom = csrtop + CURSORHEIGHT;    intleft = (csrleft > prc->left) ? csrleft : prc->left;    inttop  = (csrtop > prc->top) ? csrtop : prc->top;    intright = (csrright < prc->right) ? csrright : prc->right;    intbottom = (csrbottom < prc->bottom) ? csrbottom : prc->bottom;    if (intleft >= intright || inttop >= intbottom) {#ifdef _USE_NEWGAL        if (fShow)            GAL_UpdateRect (__gal_screen, prc->left, prc->top, RECTWP(prc), RECTHP(prc));#endif        return;    }    if (fShow && nShowCount >= 0 && pCurCsr) {        showcursor();    }    if (!fShow && nShowCount >= 0 && pCurCsr) {        hidecursor();    }#ifdef _USE_NEWGAL    if (fShow)        GAL_UpdateRect (__gal_screen, prc->left, prc->top, RECTWP(prc), RECTHP(prc));#endif}int GUIAPI ShowCursor (BOOL fShow){    if (fShow) {        nShowCount++;        if (nShowCount == 0 && pCurCsr)           showcursor();    }    else {        nShowCount--;        if (nShowCount == -1 && pCurCsr)           hidecursor();    }    return nShowCount;}#elsevoid ShowCursorForGDI (BOOL fShow, const RECT* prc){#ifdef _USE_NEWGAL    if (fShow)        GAL_UpdateRect (__gal_screen, prc->left, prc->top, RECTWP(prc), RECTHP(prc));#endif}#endif /* _CURSOR_SUPPORT */void GUIAPI GetCursorPos (POINT* ppt){    ppt->x = curx;    ppt->y = cury;}void GUIAPI SetCursorPos (int x, int y){    IAL_SetMouseXY (x, y);    RefreshCursor (&x, &y, NULL);}// Cursor clipping support.void GUIAPI ClipCursor (const RECT* prc){    RECT rc;    if (IsRectEmpty (&cliprc))        SetRect (&cliprc, 0, 0, WIDTHOFPHYGC - 1, HEIGHTOFPHYGC - 1);    if (prc == NULL) {        IAL_SetMouseRange (0,0,WIDTHOFPHYGC - 1, HEIGHTOFPHYGC - 1);        SetRect (&cliprc, 0, 0, WIDTHOFPHYGC - 1, HEIGHTOFPHYGC - 1);        return;    }    memcpy (&rc, prc, sizeof(RECT));    NormalizeRect (&rc);    IntersectRect (&cliprc, &rc, &cliprc);    NormalizeRect (&cliprc);    IAL_SetMouseRange (cliprc.left, cliprc.top, cliprc.right, cliprc.bottom);}void GUIAPI GetClipCursor (RECT* prc){    memcpy (prc, &cliprc, sizeof(RECT));}