diff --git a/rtl/win16/win31.pp b/rtl/win16/win31.pp
index 9e21135fb8..8342bb1fc9 100644
--- a/rtl/win16/win31.pp
+++ b/rtl/win16/win31.pp
@@ -599,6 +599,13 @@ type
 { WM_MOUSEACTIVATE return codes }
   MA_NOACTIVATEANDEAT = 4;
 
+{ Menu support }
+{ Flags for TrackPopupMenu }
+  TPM_RIGHTBUTTON = $0002;
+  TPM_LEFTALIGN   = $0000;
+  TPM_CENTERALIGN = $0004;
+  TPM_RIGHTALIGN  = $0008;
+
 function GetFreeSystemResources(SysResource: UINT): UINT; external 'USER';
 
 procedure LogError(err: UINT; lpInfo: FarPointer); external 'KERNEL';
@@ -779,6 +786,9 @@ function ScrollWindowEx(hwnd: HWND; dx, dy: SmallInt;
           prcScroll, prcClip: LPRECT;
           hrgnUpdate: HRGN; prcUpdate: LPRECT; flags: UINT): SmallInt; external 'USER';
 
+{ Menu support }
+function IsMenu(hmenu: HMENU): BOOL; external 'USER';
+
 implementation
 
 end.
diff --git a/rtl/win16/winprocsh.inc b/rtl/win16/winprocsh.inc
index 848af72891..4391621541 100644
--- a/rtl/win16/winprocsh.inc
+++ b/rtl/win16/winprocsh.inc
@@ -1019,3 +1019,45 @@ function TranslateAccelerator(hwnd: HWND; haccl: HACCEL; lpmsg: LPMSG): SmallInt
 {$ifdef VAR_PARAMS_ARE_FAR}
 function TranslateAccelerator(hwnd: HWND; haccl: HACCEL; var msg: MSG): SmallInt; external 'USER';
 {$endif}
+
+{ Menu support }
+
+function CreateMenu: HMENU; external 'USER';
+function CreatePopupMenu: HMENU; external 'USER';
+function LoadMenu(hinst: HINST; lpszMenuName: LPCSTR): HMENU; external 'USER';
+function LoadMenuIndirect(lpmith: LPVOID): HMENU; external 'USER';
+
+function DestroyMenu(hmenu: HMENU): BOOL; external 'USER';
+
+function GetMenu(hwnd: HWND): HMENU; external 'USER';
+function SetMenu(hwnd: HWND; hmenu: HMENU): BOOL; external 'USER';
+
+function GetSystemMenu(hwnd: HWND; fRevert: BOOL): HMENU; external 'USER';
+
+procedure DrawMenuBar(hwnd: HWND); external 'USER';
+
+function HiliteMenuItem(hwnd: HWND; hmenu: HMENU; idHiliteItem, fuHilite: UINT): BOOL; external 'USER';
+
+function InsertMenu(hmenu: HMENU; idItem, fuFlags, idNewItem: UINT; lpNewItem: LPCSTR): BOOL; external 'USER';
+function AppendMenu(hmenu: HMENU; fuFlags, idNewItem: UINT; lpNewItem: LPCSTR): BOOL; external 'USER';
+function ModifyMenu(hmenu: HMENU; idItem, fuFlags, idNewItem: UINT; lpNewItem: LPCSTR): BOOL; external 'USER';
+function RemoveMenu(hmenu: HMENU; idItem, fuFlags: UINT): BOOL; external 'USER';
+function DeleteMenu(hmenu: HMENU; idItem, fuFlags: UINT): BOOL; external 'USER';
+
+function ChangeMenu(hmenu: HMENU; uPosition: UINT; lpNewItem: LPCSTR; idNewItem, fuFlags: UINT): BOOL; external 'USER';
+
+function EnableMenuItem(hmenu: HMENU; idEnableItem, uEnable: UINT): BOOL; external 'USER';
+function CheckMenuItem(hmenu: HMENU; idCheckItem, uCheck: UINT): BOOL; external 'USER';
+
+function GetSubMenu(hmenu: HMENU; nPos: SmallInt): HMENU; external 'USER';
+
+function GetMenuItemCount(hmenu: HMENU): SmallInt; external 'USER';
+function GetMenuItemID(hmenu: HMENU; pos: SmallInt): UINT; external 'USER';
+
+function GetMenuString(hmenu: HMENU; idItem: UINT; lpsz: LPSTR; cbMax: SmallInt; fwFlags: UINT): SmallInt; external 'USER';
+function GetMenuState(hmenu: HMENU; idItem, fuFlags: UINT): UINT; external 'USER';
+
+function SetMenuItemBitmaps(hmenu: HMENU; idItem, fuFlags: UINT; hbmUnchecked, hbmChecked: HBITMAP): BOOL; external 'USER';
+function GetMenuCheckMarkDimensions: DWORD; external 'USER';
+
+function TrackPopupMenu(hmenu: HMENU; fuFlags: UINT; x, y, nReserved: SmallInt; hwnd: HWND; lprc: LPRECT): BOOL; external 'USER';
diff --git a/rtl/win16/wintypes.inc b/rtl/win16/wintypes.inc
index 61e4aedb52..0638c7cbe5 100644
--- a/rtl/win16/wintypes.inc
+++ b/rtl/win16/wintypes.inc
@@ -1920,3 +1920,76 @@ const
 type
 { Accelerator support }
   HACCEL = THandle;
+
+{ Menu support }
+
+{ Menu template header }
+  PMENUITEMTEMPLATEHEADER = ^MENUITEMTEMPLATEHEADER;
+  LPMENUITEMTEMPLATEHEADER = ^MENUITEMTEMPLATEHEADER; far;
+  MENUITEMTEMPLATEHEADER = record
+    versionNumber: UINT;
+    offset: UINT;
+  end;
+  TMenuItemTemplateHeader = MENUITEMTEMPLATEHEADER;
+
+{ Menu template item struct }
+  PMENUITEMTEMPLATE = ^MENUITEMTEMPLATE;
+  LPMENUITEMTEMPLATE = ^MENUITEMTEMPLATE; far;
+  MENUITEMTEMPLATE = record
+    mtOption: UINT;
+    mtID: UINT;
+    mtString: array [0..0] of Char;
+  end;
+  TMenuItemTemplate = MENUITEMTEMPLATE;
+
+const
+  MF_INSERT          = $0000;
+  MF_CHANGE          = $0080;
+  MF_APPEND          = $0100;
+  MF_DELETE          = $0200;
+  MF_REMOVE          = $1000;
+
+{ Menu flags for Add/Check/EnableMenuItem() }
+  MF_BYCOMMAND       = $0000;
+  MF_BYPOSITION      = $0400;
+
+  MF_SEPARATOR       = $0800;
+
+  MF_ENABLED         = $0000;
+  MF_GRAYED          = $0001;
+  MF_DISABLED        = $0002;
+
+  MF_UNCHECKED       = $0000;
+  MF_CHECKED         = $0008;
+  MF_USECHECKBITMAPS = $0200;
+
+  MF_STRING          = $0000;
+  MF_BITMAP          = $0004;
+  MF_OWNERDRAW       = $0100;
+
+  MF_POPUP           = $0010;
+  MF_MENUBARBREAK    = $0020;
+  MF_MENUBREAK       = $0040;
+
+  MF_UNHILITE        = $0000;
+  MF_HILITE          = $0080;
+
+  MF_SYSMENU         = $2000;
+  MF_HELP            = $4000;
+  MF_MOUSESELECT     = $8000;
+
+
+  MF_END             = $0080;  { Only valid in menu resource templates }
+
+{ Flags for TrackPopupMenu }
+  TPM_LEFTBUTTON     = $0000;
+
+{ Menu messages }
+  WM_INITMENU        = $0116;
+  WM_INITMENUPOPUP   = $0117;
+
+  WM_MENUSELECT      = $011F;
+  WM_MENUCHAR        = $0120;
+
+{ Menu and control command messages }
+  WM_COMMAND         = $0111;