The following table provides a list of 16-bit Windows API elements that are not necessary or were superseded in the Win32 API.
| 16-bit Windows API Element | Win32 API Support |
|---|---|
| AccessResource | No equivalent. |
| AllocDSToCSAlias | No equivalent. |
| AllocResource | No equivalent. |
| AllocSelector | No equivalent. |
| ChangeMenu | Replaced by the AppendMenu, InsertMenu, ModifyMenu, and RemoveMenu functions. |
| ChangeSelector | No equivalent. |
| CloseSound | Replaced by multimedia sound support. |
| CountVoiceNotes | Replaced by multimedia sound support. |
| DECLARE_HANDLE | No equivalent. |
| DefineHandleTable | No equivalent. |
| DeviceMode | Replaced by the DocumentProperties function. |
| DlgDirSelect | Replaced by the DlgDirSelectEx function. |
| DlgDirSelectComboBox | Replaced by the DlgDirSelectComboBoxEx function. |
| DOS3Call | Replaced by named, portable functions. |
| ExtDeviceMode | Replaced by the DocumentProperties function. |
| FIELDOFFSET | No equivalent. |
| FlushComm | Replaced by the PurgeComm function. |
| FreeSelector | No equivalent. |
| GCW_HCURSOR | Replaced by GCL_HCURSOR. |
| GCW_HBRBACKGROUND | Replaced by GCL_HBRBACKGROUND. |
| GCW_HICON | Replaced by GCL_HICON. |
| GetAspectRatioFilter | Replaced by the GetAspectRatioFilterEx function. |
| GetBitmapDimension | Replaced by the GetBitmapDimensionEx function. |
| GetBrushOrg | Replaced by the GetBrushOrgEx function. |
| GetCodeHandle | No equivalent. |
| GetCodeInfo | No equivalent. |
| GetCommError | Replaced by the GetCommState function. |
| GetCurrentPDB | No equivalent. |
| GetCurrentPosition | Replaced by the GetCurrentPositionEx function. |
| GetDCOrg | Replaced by the GetDCOrgEx function. |
| GetDOSEnvironment | No equivalent. |
| GetEnvironment | No equivalent. |
| GetFreeSpace | Replaced by the GlobalMemoryStatus function. |
| GetFreeSystemResources | Replaced by the GlobalMemoryStatus function. |
| GetInstanceData | No equivalent; use an IPC mechanism. |
| GetKBCodePage | No equivalent. |
| GetMetaFileBits | Replaced by the GetEnhMetaFileBits function. |
| GetSystemDebugState | No equivalent. |
| GetTempDrive | Replaced by the GetTempPath function. |
| GetTextExtent | Replaced by the GetTextExtentPoint32 function. |
| GetTextExtentEx | Replaced by the GetTextExtentExPoint function. |
| GetThresholdEvent | Replaced by multimedia sound support. |
| GetThresholdStatus | Replaced by multimedia sound support. |
| GetViewportExt | Replaced by the GetViewportExtEx function. |
| GetViewportOrg | Replaced by the GetViewportOrgEx function. |
| GetWindowExt | Replaced by the GetWindowExtEx function. |
| GetWindowOrg | Replaced by the GetWindowOrgEx function. |
| GetWinFlags | No equivalent. |
| GlobalCompact | No equivalent. |
| GlobalDiscard | No equivalent. |
| GlobalDosAlloc | No equivalent. |
| GlobalDosFree | No equivalent. |
| GlobalFix | No equivalent. |
| GlobalLRUNewest | No equivalent. |
| GlobalLRUOldest | No equivalent. |
| GlobalNotify | No equivalent. |
| GlobalPageLock | No equivalent. |
| GlobalPageUnlock | No equivalent. |
| GlobalUnfix | No equivalent. |
| GlobalUnwire | No equivalent. |
| GlobalWire | No equivalent. |
| GWW_HINSTANCE | Replaced by GWL_HINSTANCE. |
| GWW_HWNDPARENT | Replaced by GWL_HWNDPARENT. |
| GWW_ID | Replaced by GWL_ID. |
| GWW_USERDATA | Replaced by GWL_USERDATA. |
| IsGDIObject | No equivalent. |
| LimitEmsPages | No equivalent. |
| LocalCompact | No equivalent. |
| LocalDiscard | No equivalent. |
| LocalInit | No equivalent. |
| LocalNotify | No equivalent. |
| LocalShrink | No equivalent. |
| LockData | No equivalent. |
| LockInput | No equivalent. |
| LockSegment | No equivalent. |
| MAKELP | No equivalent. |
| MAKEPOINT | No equivalent. |
| MoveTo | Replaced by the MoveToEx function. |
| NetBIOSCall | Replaced by the Netbios function. |
| OFFSETOF | No equivalent. |
| OffsetViewportOrg | Replaced by the OffsetViewportOrgEx function. |
| OffsetWindowOrg | Replaced by the OffsetWindowOrgEx function. |
| OpenComm | Replaced by the CreateFile function. |
| OpenSound | Replaced by multimedia sound support. |
| ProfClear | No equivalent. |
| ProfFinish | No equivalent. |
| ProfFlush | No equivalent. |
| ProfInsChk | No equivalent. |
| ProfSampRate | No equivalent. |
| ProfSetup | No equivalent. |
| ProfStart | No equivalent. |
| ProfStop | No equivalent. |
| READ | Replaced by OF_READ. |
| ReadComm | Replaced by the ReadFile function. |
| READ_WRITE | Replaced by OF_READ_WRITE. |
| ScaleViewportExt | Replaced by the ScaleViewportExtEx function. |
| ScaleWindowExt | Replaced by the ScaleWindowExtEx function. |
| SEGINFO | No equivalent. |
| SELECTOROF | No equivalent. |
| SetBitmapDimension | Replaced by the SetBitmapDimensionEx function. |
| SetCommEventMask | Replaced by the SetCommMask function. |
| SetEnvironment | No equivalent. |
| SetMetaFileBits | Replaced by the SetEnhMetaFileBits function. |
| SetResourceHandler | No equivalent. |
| SetSoundNoise | Replaced by multimedia sound support. |
| SetSwapAreaSize | No equivalent. |
| SetViewportExt | Replaced by the SetViewportExtEx function. |
| SetViewportOrg | Replaced by the SetViewportOrgEx function. |
| SetVoiceAccent | Replaced by multimedia sound support. |
| SetVoiceEnvelope | Replaced by multimedia sound support. |
| SetVoiceNote | Replaced by multimedia sound support. |
| SetVoiceQueueSize | Replaced by multimedia sound support. |
| SetVoiceSound | Replaced by multimedia sound support. |
| SetVoiceThreshold | Replaced by multimedia sound support. |
| SetWindowExt | Replaced by the SetWindowExtEx function. |
| SetWindowOrg | Replaced by the SetWindowOrgEx function. |
| StartSound | Replaced by multimedia sound support. |
| StopSound | Replaced by multimedia sound support. |
| SwitchStackBack | No equivalent. |
| SwitchStackTo | No equivalent. |
| SyncAllVoices | Replaced by multimedia sound support. |
| UngetCommChar | No equivalent. |
| UnlockData | No equivalent. |
| UnlockResource | No equivalent. |
| UnlockSegment | No equivalent. |
| ValidateCodeSegments | No equivalent. |
| ValidateFreeSpaces | No equivalent. |
| WaitSoundState | Replaced by multimedia sound support. |
| WM_CTLCOLOR | Replaced by the following messages: WM_CTLCOLORBTN WM_CTLCOLORDLG WM_CTLCOLOREDIT WM_CTLCOLORLISTBOX WM_CTLCOLORMSGBOX WM_CTLCOLORSCROLLBAR WM_CTLCOLORSTATIC |
| WRITE | Replaced by OF_WRITE. |
| WriteComm | Replaced by the WriteFile function. |