C++ HUnlock函数代码示例

char *__PHYSFS_platformGetUserName(void)
{
    char *retval = NULL;
    StringHandle strHandle;
    short origResourceFile = CurResFile();

    /* use the System resource file. */
    UseResFile(0);
    /* apparently, -16096 specifies the username. */
    strHandle = GetString(-16096);
    UseResFile(origResourceFile);
    BAIL_IF_MACRO(strHandle == NULL, NULL, NULL);

    HLock((Handle) strHandle);
    retval = (char *) malloc((*strHandle)[0] + 1);
    if (retval == NULL)
    {
        HUnlock((Handle) strHandle);
        BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
    } /* if */
    memcpy(retval, &(*strHandle)[1], (*strHandle)[0]);
    retval[(*strHandle)[0]] = '\0';  /* null-terminate it. */
    HUnlock((Handle) strHandle);

    return(retval);
} /* __PHYSFS_platformGetUserName */

void
UpdateAdditionsWin(void)
{
	Rect		r;
	Cell		c;
	int			i;
	GrafPtr		oldPort;
	GetPort(&oldPort);
	
	SetPort(gWPtr);
	
	MoveTo( gControls->aw->compListBox.left, gControls->aw->compListBox.top - kInterWidgetPad + 1);
	HLock(gControls->cfg->selAddMsg);
	DrawString( CToPascal(*gControls->cfg->selAddMsg));
	HUnlock(gControls->cfg->selAddMsg);
	
#if 0
	RGBColor backColorOld;
    Rect adjustedRect, *clRect = &gControls->aw->compListBox;
    SetRect(&adjustedRect, clRect->left, clRect->top+1, clRect->right, clRect->bottom-1);
    GetBackColor(&backColorOld);
    BackColor(whiteColor);
    EraseRect(&adjustedRect);
    RGBBackColor(&backColorOld);
#endif
   
	LUpdate( (*gControls->aw->compList)->port->visRgn, gControls->aw->compList);
	SetRect(&r, gControls->aw->compListBox.left, gControls->aw->compListBox.top,
	            gControls->aw->compListBox.right + 1, gControls->aw->compListBox.bottom);
	FrameRect(&r);	
	
	SetPt(&c, 0, 0);
	if (LGetSelect(true, &c, gControls->aw->compList))
	{
		HLock((Handle)gControls->aw->compDescTxt);
		SetRect(&r, (*gControls->aw->compDescTxt)->viewRect.left,
					(*gControls->aw->compDescTxt)->viewRect.top,
					(*gControls->aw->compDescTxt)->viewRect.right,
					(*gControls->aw->compDescTxt)->viewRect.bottom);
		HUnlock((Handle)gControls->aw->compDescTxt);
		TEUpdate(&r, gControls->aw->compDescTxt);	
	}
	
	DrawDiskSpaceMsgs( gControls->opt->vRefNum );
	
	for (i = 0; i < numRows; i++)
	{
		if (gControls->cfg->comp[rowToComp[i]].highlighted)
		{
			AddInitRowHighlight(i);
			break;
		}
	}
	
	SetPort(oldPort);
}

static void unlock_collection(
	struct collection_header *header)
{
	assert(header->collection);
	
	HUnlock((Handle)header->collection);
	HUnlock((Handle)header->shading_tables);
	
	return;
}

// This routine makes sure there is at least a null byte (and accompanying index)
// for every defined macro numbered n such that n < NUM_MACROS
// It lengthens the handle if necessary (backwards compatibility),
// but does NOT truncate additional data (forwards compatibility).
void fixMacros(NewMacroInfo *macrost)
{
	Handle macroHandle;
	Ptr macroPtr, pos;
	long len, len2;
	short i, num;

	macroHandle = macrost->handle;
	HLock(macroHandle);
	macroPtr = *macroHandle;
	len = macrost->index[0];
	pos = macroPtr;
	pos += (len - 1);

	if (*pos != 0) {
		len++;
		HUnlock(macroHandle);
		SetHandleSize(macroHandle, len);
		HLock(macroHandle);
		macroPtr = *macroHandle;
		pos = macroPtr + (len - 1);
		*pos = 0;
	}

	num = 0;
	for (i = 1; i < NUM_MACROS; i++) {
		if (macrost->index[i] == 0) {
			num = i;
			break;
		}
	}

	if (num) {
		len2 = len;
		len += (NUM_MACROS - num);
		HUnlock(macroHandle);
		SetHandleSize(macroHandle, len);
		HLock(macroHandle);
		macroPtr = *macroHandle;
		pos = macroPtr + len2;
		for (i = num; i < NUM_MACROS; i++, pos++) {
			*pos = 0;
			macrost->index[i] = pos - macroPtr;
		}
	}

	HUnlock(macroHandle);
	macrost->index[0] = len;
}

void LoadAudioUnits()
{
   ComponentDescription desc;
   Component component;
   
   desc.componentType = kAudioUnitType_Effect; //'aufx'
   desc.componentSubType = 0;
   desc.componentManufacturer = 0;
   desc.componentFlags = 0;
   desc.componentFlagsMask = 0;
   
   component = FindNextComponent(NULL, &desc);
   while (component != NULL) {
      ComponentDescription found;
      Handle nameHandle = NewHandle(0);
      GetComponentInfo(component, &found, nameHandle, 0, 0);
      HLock(nameHandle);
      int len = ((const char *)(*nameHandle))[0];
      wxString name((const char *)(*nameHandle)+1, len);
      HUnlock(nameHandle);
      DisposeHandle(nameHandle);

      Effect::RegisterEffect(new AudioUnitEffect(name, component));

      component = FindNextComponent (component, &desc);
   }
}

OSErr GetToolname(char* toolName)
{
	OSErr			error = noErr;
	FSSpec		where;
	short			ref;
	Handle		theString;
	toolName[0] = '\0';													// Start without a name
	error = FindPrefs(&where);
	ref = FSpOpenResFile(&where, fsRdWrPerm);
	if (ref != -1) {
		theString = Get1Resource('STR ',kToolNameRes);			// Should look in most recent file first
		if (theString != nil) {
			HLock(theString);
			memcpy(toolName, *theString, (*theString)[0] + 1);
			HUnlock(theString);
			ReleaseResource(theString);
		} else {
			error = -5;
		}
		CloseResFile(ref);
		if (error == noErr) {											// CTB is touchy; make sure this tool exists
			error = VerifyToolExists(toolName);
		}
	} else {
		error = ResError();
	}

	return error;
}

// Parse a single resource
bool XML_ResourceFork::ParseResource(ResType Type, short ID)
{
    ResourceHandle = Get1Resource(Type,ID);
    if (ResourceHandle == NULL) {
        return false;
    }

    HLock(ResourceHandle);
    if (!DoParse()) {
        const char *Name = SourceName ? SourceName : "[]";
#ifdef TARGET_API_MAC_CARBON
        csprintf(
            temporary,
            "There were configuration-file parsing errors in resource %hd of object %s",
            ID,Name);
        SimpleAlert(kAlertStopAlert,temporary);
#else
        psprintf(
            ptemporary,
            "There were configuration-file parsing errors in resource %hd of object %s",
            ID,Name);
        ParamText(ptemporary,0,0,0);
        Alert(FatalErrorAlert,NULL);
#endif
        ExitToShell();
    }
    HUnlock(ResourceHandle);
    ReleaseResource(ResourceHandle);
    return true;
}

PRIVATE PicHandle
pict_from_gworld (GWorldPtr gp, int *lenp)
{
  PicHandle retval;

  if (!gp)
    retval = NULL;
  else
    {
      Rect pict_frame;
      PixMapHandle pm;

      pm = GetGWorldPixMap (gp);
      pict_frame = PIXMAP_BOUNDS (pm);
      retval = OpenPicture (&pict_frame);
      if (retval)
	{
	  ClipRect (&pict_frame);
	  HLock ((Handle) pm);
	  CopyBits ((BitMap *) STARH (pm), PORT_BITS_FOR_COPY (thePort),
		    &pict_frame, &pict_frame, srcCopy, NULL);
	  HUnlock ((Handle) pm);
	  ClosePicture ();
	}
    }
  return retval;
}

void	free_all_alloc_pools()
{
    PoolHandlePtr p, q;
    long count;

    if ( poolList == 0 ) return;
    assert( *poolList != 0 );

    // loop through the allocated blocks and free them
    p = *poolList;
    count = GetHandleSize( (Handle)poolList )/sizeof(PoolHandle);

    q = p + count;

    HLock( (Handle)poolList );
    while (p<q) {
        if ( *p != 0 )
            DisposeHandle( (Handle)*p );
        *p = 0;
        p++;
    }
    HUnlock( (Handle)poolList );

    DisposeHandle( (Handle)poolList );
    poolList = 0;

    // reset the alloc mechanism
    uninitialize_memory_pool();
}

void PushCalcEntry(CtlRecHndl entryBox)
{
    abCalcOp *op;

    GetLETextByID(gCalcWinPtr, abCalcEntryBox, &gStrBuf);

    if (gStrBuf.textLength > 0) {
        gStrBuf.text[gStrBuf.textLength] = '\0';

        op = abCalcOpLookup(gStrBuf.text);

        if (op != NULL) {
            op->execute();
        } else if (abCalcParseExpr(&gNDAExpr, gStrBuf.text) != NULL) {
            abCalcStackExprPush(&gNDAExpr);
        } else {
            LERecHndl leHandle;

            HLock((Handle)entryBox);
            leHandle = (LERecHndl)(*entryBox)->ctlData;
            HUnlock((Handle)entryBox);

            LESetSelect(0, gStrBuf.textLength, leHandle);
            abCalcRaiseError(abCalcSyntaxError, NULL);
            return;
        }

        gStrBuf.textLength = 0;
        SetLETextByID(gCalcWinPtr, abCalcEntryBox, &gStrBuf);
    }
}

/* convert icns(icons for MacOS X) to IPIcon */
OSErr	XIconToIPIcon(const FSSpec *theFile,IPIconRec *ipIcon)
{
	OSErr	err;
	IconFamilyHandle	theIconFamily;
	short		refNum;
	long		count;
	
	if (isIconServicesAvailable)
	{
		/* open icns file */
		err=FSpOpenDF(theFile,fsRdPerm,&refNum);
		if (err!=noErr) return err;
		
		err=GetEOF(refNum,&count);
		if (err!=noErr)
		{
			FSClose(refNum);
			return err;
		}
		theIconFamily=(IconFamilyHandle)NewHandle(count);
		HLock((Handle)theIconFamily);
		err=FSRead(refNum,&count,*theIconFamily);
		HUnlock((Handle)theIconFamily);
		
		err=FSClose(refNum);
		
		/* convert IconFamily to IPIcon */
		err=IconFamilyToIPIcon(theIconFamily,ipIcon);
		
		DisposeHandle((Handle)theIconFamily);
		return err;
	}
	else
		return -1;
}

static int ResObj_tp_init(PyObject *_self, PyObject *_args, PyObject *_kwds)
{
    char *srcdata = NULL;
    int srclen = 0;
    Handle itself;
    char *kw[] = {"itself", 0};

    if (PyArg_ParseTupleAndKeywords(_args, _kwds, "O&", kw, ResObj_Convert, &itself))
    {
        ((ResourceObject *)_self)->ob_itself = itself;
        return 0;
    }
    PyErr_Clear();
    if (!PyArg_ParseTupleAndKeywords(_args, _kwds, "|s#", kw, &srcdata, &srclen)) return -1;
    if ((itself = NewHandle(srclen)) == NULL)
    {
        PyErr_NoMemory();
        return 0;
    }
    ((ResourceObject *)_self)->ob_itself = itself;
    if (srclen && srcdata)
    {
        HLock(itself);
        memcpy(*itself, srcdata, srclen);
        HUnlock(itself);
    }
    return 0;
}

static PyObject *Res_Handle(PyObject *_self, PyObject *_args)
{
    PyObject *_res = NULL;

    char *buf;
    int len;
    Handle h;
    ResourceObject *rv;

    if (!PyArg_ParseTuple(_args, "s#", &buf, &len))
        return NULL;
    h = NewHandle(len);
    if ( h == NULL ) {
        PyErr_NoMemory();
        return NULL;
    }
    HLock(h);
    memcpy(*h, buf, len);
    HUnlock(h);
    rv = (ResourceObject *)ResObj_New(h);
    rv->ob_freeit = PyMac_AutoDisposeHandle;
    _res = (PyObject *)rv;
    return _res;

}

void FindFolderPath( Handle appendPathTo, int folderType, Str255  pathInFolder )
{
	OSErr err;
	short vRefNum;
	long dirID;
	long appendPathToLength;
	short pathLength;
	Handle path;
		
	// Try to get the application support folder
	err = FindFolder( kOnSystemDisk, folderType, FALSE, &vRefNum, &dirID );
	if( ! err )
	{		
		// Find the mindy:libraries dir and get its full path
		// Resize the destination handle to fit,
		// then copy in the path and the sub-path
		err = GetFullPath( vRefNum, dirID, "\p", &pathLength, &path );
		if( ! err )
		{
			appendPathToLength = GetHandleSize( appendPathTo );
			SetHandleSize( appendPathTo,  appendPathToLength+ pathLength + pathInFolder[ 0 ] );
			err = MemError();
			if( ! err )
			{
				HLock( appendPathTo );
				HLock( path );
					BlockMove( *path, &((*appendPathTo)[ appendPathToLength ]),  pathLength );
					BlockMove( &(pathInFolder[ 1 ]), &((*appendPathTo)[ appendPathToLength + pathLength ])  ,  pathInFolder[ 0 ] );
				HUnlock( path );
				HLock( appendPathTo );
			}
		}
	}

void BuildLibPath( void )
{
	Handle searchPath;
	
	// make the search path handle 
	// and fill it with the initial search path
	// use strlen neat so as to chop off trailing null!
	searchPath = NewHandle( strlen( INITIAL_SEARCH_PATH ) );
	if( (searchPath != NULL) && ( ResError() == noErr ) )
	{
		HLock( searchPath );
			BlockMove( INITIAL_SEARCH_PATH, *searchPath, strlen( INITIAL_SEARCH_PATH  ) );
		HUnlock( searchPath );
			
		// Try to get the application support folder
		FindFolderPath( searchPath, kApplicationSupportFolderType, FOLDER_SEARCH_PATH );
		
		// Try to get the extensions folder
		FindFolderPath( searchPath, kExtensionFolderType, FOLDER_SEARCH_PATH  );
		
		// lock it out of the way, 
		// null terminate it, overwriting the last \t, making a c string
		// and set LIBDIR to it
		HLockHi( searchPath );
		(*searchPath)[ GetHandleSize( searchPath ) -1 ] = '\0';
		LIBDIR = *searchPath;
	}
}