在开发的应用程序中,关于节省和释放内存资源应注意那些问题?

Question

开发文当中有一篇关于资源释放的文章，可能不太好找，就是下面的：Resource        Allocation Routine        Cleanup Routine      Cleanup Required?
================================================================================Accelerators    LoadAccelerators          N/A                  NoAtoms           GlobalAddAtom             GlobalFreeAtom       YesBitmaps         CreateBitmap              DeleteObject         Yes *
                CreateBitmapIndirect      DeleteObject         Yes *
                CreateCompatibleBitmap    DeleteObject         Yes *
                CreateDIBitmap            DeleteObject         Yes *
                CreateDiscardableBitmap   DeleteObject         Yes *
                LoadBitmap                DeleteObject         Yes *Brushes         CreateBrushIndirect       DeleteObject         Yes
                CreateDIBPatternBrush     DeleteObject         Yes
                CreateHatchBrush          DeleteObject         Yes
                CreatePatternBrush        DeleteObject         Yes
                CreateSolidBrush          DeleteObject         YesCarets          CreateCaret               DestroyCaret         No  #Clipboard       OpenClipboard             CloseClipboard       YesComms Ports     OpenComm                  CloseComm            YesCursor          CreateCursor              DestroyCursor        Yes
                LoadCursor                N/A                  NoDC              CreateDC                  DeleteDC             Yes
                CreateCompatibleDC        DeleteDC             Yes @
                GetDC                     ReleaseDC            Yes
                GetWindowDC               ReleaseDC            Yes
                BeginPaint                EndPaint             YesDialog Box      CreateDialog              DestroyWindow        No
                CreateDialogIndirect      DestroyWindow        No
                CreateDialogIndirectParam DestroyWindow        No
                CreateDialogParam         DestroyWindow        NoFile            OpenFile                  _lclose              NoFonts           CreateFont                DeleteObject         Yes
                CreateFontIndirect        DeleteObject         Yes
                AddFontResource           RemoveFontResource   YesGDI Stock Obj   GetStockObject            N/A                  No  &Hook            SetWindowsHook            UnhookWindowsHook    YesIC              CreateIC                  DeleteDC             YesIcon            CreateIcon                DestroyIcon          Yes
                LoadIcon                  N/A                  NoLibrary         LoadLibrary               FreeLibrary          YesMemory          AllocDStoCSAlias          FreeSelector         Yes
                AllocSelector             FreeSelector         Yes
                GlobalAlloc               GlobalFree           No
                GlobalDOSAlloc            GlobalDOSFr          No
                GlobalFix                 GlobalUnfix          No
                GlobalLock                GlobalUnlock         No
                GlobalPageLock            GlobalPageUnlock     No
                GlobalRealloc             GlobalFree           No
                GlobalWire                GlobalUnwire         No
                LocalAlloc                LocalFree            No
                LocalLock                 LocalUnlock          No
                LocalRealloc              LocalFree            NoMenu            CreateMenu                DestroyMenu          No  %
                CreatePopupMenu           DestroyMenu          No  %
                LoadMenu                  DestroyMenu          No  %
                LoadMenuIndirect          DestroyMenu          No  %
                GetSystemMenu             N/A                  NoMetaFile        CreateMetaFile            DeleteMetaFile       YesPalette         CreatePalette             DeleteObject         YesPen             CreatePen                 DeleteObject         Yes
                CreatePenIndirect         DeleteObject         YesRegions         CreateEllipticRgn         DeleteObject         Yes
                CreateEllipticRgnIndirect DeleteObject         Yes
                CreatePolygonRgn          DeleteObject         Yes
                CreatePolyPolygonRgn      DeleteObject         Yes
                CreateRectRgn             DeleteObject         Yes
                CreateRectRgnIndirect     DeleteObject         Yes
                CreateRoundRectRgn        DeleteObject         YesResource        AllocResource             FreeResource         No
                FindResource              N/A                  No
                LoadResource              FreeResource         No
                LockResource              UnlockResource       NoSound           OpenSound                 CloseSound           YesString          LoadString                N/A                  NoThunk           MakeProcInstance          FreeProcInstance     NoTimer           SetTimer                  KillTimer            NoWindow          CreateWindow              DestroyWindow        No
                CreateWindowEx            DestroyWindow        No
Notes:
------
*   Bitmaps must be disconnected from a DC before being freed.
%   Menus must be freed before an application exits if the menu is not
    connected to any window.
@   A DC must be disconnected from bitmaps before being freed.
#   If a bitmap is specified for the Caret, it must be freed.
&   Calls to DeleteObject do not harm stock objects.

Answer 1

绘图时使用了设备上下文对象，注意随时释放（查msdn）。
对于数组使用，动态创建时避免造成“内存碎片”，分配大小时按某一常数的倍数分配。