Question

I’m overriding WndProc, so I want to write code like

if (m.Msg == WM_COMMAND)     my special stuff else     base.WndProc(ref m) 

Answer 1

AFAIK .NET does not ship with these constants. This site has all the values so is a matter of copy paste.

private const UInt32 WM_ACTIVATE           = 0x0006; private const UInt32 WM_ACTIVATEAPP        = 0x001C; private const UInt32 WM_AFXFIRST           = 0x0360; private const UInt32 WM_AFXLAST        = 0x037F; private const UInt32 WM_APP            = 0x8000; private const UInt32 WM_ASKCBFORMATNAME    = 0x030C; private const UInt32 WM_CANCELJOURNAL      = 0x004B; private const UInt32 WM_CANCELMODE         = 0x001F; private const UInt32 WM_CAPTURECHANGED     = 0x0215; private const UInt32 WM_CHANGECBCHAIN      = 0x030D; private const UInt32 WM_CHANGEUISTATE      = 0x0127; private const UInt32 WM_CHAR           = 0x0102; private const UInt32 WM_CHARTOITEM         = 0x002F; private const UInt32 WM_CHILDACTIVATE      = 0x0022; private const UInt32 WM_CLEAR          = 0x0303; private const UInt32 WM_CLOSE          = 0x0010; private const UInt32 WM_COMMAND        = 0x0111; private const UInt32 WM_COMPACTING         = 0x0041; private const UInt32 WM_COMPAREITEM        = 0x0039; private const UInt32 WM_CONTEXTMENU        = 0x007B; private const UInt32 WM_COPY           = 0x0301; private const UInt32 WM_COPYDATA           = 0x004A; private const UInt32 WM_CREATE         = 0x0001; private const UInt32 WM_CTLCOLORBTN        = 0x0135; private const UInt32 WM_CTLCOLORDLG        = 0x0136; private const UInt32 WM_CTLCOLOREDIT       = 0x0133; private const UInt32 WM_CTLCOLORLISTBOX    = 0x0134; private const UInt32 WM_CTLCOLORMSGBOX     = 0x0132; private const UInt32 WM_CTLCOLORSCROLLBAR      = 0x0137; private const UInt32 WM_CTLCOLORSTATIC     = 0x0138; private const UInt32 WM_CUT            = 0x0300; private const UInt32 WM_DEADCHAR           = 0x0103; private const UInt32 WM_DELETEITEM         = 0x002D; private const UInt32 WM_DESTROY        = 0x0002; private const UInt32 WM_DESTROYCLIPBOARD       = 0x0307; private const UInt32 WM_DEVICECHANGE       = 0x0219; private const UInt32 WM_DEVMODECHANGE      = 0x001B; private const UInt32 WM_DISPLAYCHANGE      = 0x007E; private const UInt32 WM_DRAWCLIPBOARD      = 0x0308; private const UInt32 WM_DRAWITEM           = 0x002B; private const UInt32 WM_DROPFILES          = 0x0233; private const UInt32 WM_ENABLE         = 0x000A; private const UInt32 WM_ENDSESSION         = 0x0016; private const UInt32 WM_ENTERIDLE          = 0x0121; private const UInt32 WM_ENTERMENULOOP      = 0x0211; private const UInt32 WM_ENTERSIZEMOVE      = 0x0231; private const UInt32 WM_ERASEBKGND         = 0x0014; private const UInt32 WM_EXITMENULOOP       = 0x0212; private const UInt32 WM_EXITSIZEMOVE       = 0x0232; private const UInt32 WM_FONTCHANGE         = 0x001D; private const UInt32 WM_GETDLGCODE         = 0x0087; private const UInt32 WM_GETFONT        = 0x0031; private const UInt32 WM_GETHOTKEY          = 0x0033; private const UInt32 WM_GETICON        = 0x007F; private const UInt32 WM_GETMINMAXINFO      = 0x0024; private const UInt32 WM_GETOBJECT          = 0x003D; private const UInt32 WM_GETTEXT        = 0x000D; private const UInt32 WM_GETTEXTLENGTH      = 0x000E; private const UInt32 WM_HANDHELDFIRST      = 0x0358; private const UInt32 WM_HANDHELDLAST       = 0x035F; private const UInt32 WM_HELP           = 0x0053; private const UInt32 WM_HOTKEY         = 0x0312; private const UInt32 WM_HSCROLL        = 0x0114; private const UInt32 WM_HSCROLLCLIPBOARD       = 0x030E; private const UInt32 WM_ICONERASEBKGND     = 0x0027; private const UInt32 WM_IME_CHAR           = 0x0286; private const UInt32 WM_IME_COMPOSITION    = 0x010F; private const UInt32 WM_IME_COMPOSITIONFULL    = 0x0284; private const UInt32 WM_IME_CONTROL        = 0x0283; private const UInt32 WM_IME_ENDCOMPOSITION     = 0x010E; private const UInt32 WM_IME_KEYDOWN        = 0x0290; private const UInt32 WM_IME_KEYLAST        = 0x010F; private const UInt32 WM_IME_KEYUP          = 0x0291; private const UInt32 WM_IME_NOTIFY         = 0x0282; private const UInt32 WM_IME_REQUEST        = 0x0288; private const UInt32 WM_IME_SELECT         = 0x0285; private const UInt32 WM_IME_SETCONTEXT     = 0x0281; private const UInt32 WM_IME_STARTCOMPOSITION   = 0x010D; private const UInt32 WM_INITDIALOG         = 0x0110; private const UInt32 WM_INITMENU           = 0x0116; private const UInt32 WM_INITMENUPOPUP      = 0x0117; private const UInt32 WM_INPUTLANGCHANGE    = 0x0051; private const UInt32 WM_INPUTLANGCHANGEREQUEST = 0x0050; private const UInt32 WM_KEYDOWN        = 0x0100; private const UInt32 WM_KEYFIRST           = 0x0100; private const UInt32 WM_KEYLAST        = 0x0108; private const UInt32 WM_KEYUP          = 0x0101; private const UInt32 WM_KILLFOCUS          = 0x0008; private const UInt32 WM_LBUTTONDBLCLK      = 0x0203; private const UInt32 WM_LBUTTONDOWN        = 0x0201; private const UInt32 WM_LBUTTONUP          = 0x0202; private const UInt32 WM_MBUTTONDBLCLK      = 0x0209; private const UInt32 WM_MBUTTONDOWN        = 0x0207; private const UInt32 WM_MBUTTONUP          = 0x0208; private const UInt32 WM_MDIACTIVATE        = 0x0222; private const UInt32 WM_MDICASCADE         = 0x0227; private const UInt32 WM_MDICREATE          = 0x0220; private const UInt32 WM_MDIDESTROY         = 0x0221; private const UInt32 WM_MDIGETACTIVE       = 0x0229; private const UInt32 WM_MDIICONARRANGE     = 0x0228; private const UInt32 WM_MDIMAXIMIZE        = 0x0225; private const UInt32 WM_MDINEXT        = 0x0224; private const UInt32 WM_MDIREFRESHMENU     = 0x0234; private const UInt32 WM_MDIRESTORE         = 0x0223; private const UInt32 WM_MDISETMENU         = 0x0230; private const UInt32 WM_MDITILE        = 0x0226; private const UInt32 WM_MEASUREITEM        = 0x002C; private const UInt32 WM_MENUCHAR           = 0x0120; private const UInt32 WM_MENUCOMMAND        = 0x0126; private const UInt32 WM_MENUDRAG           = 0x0123; private const UInt32 WM_MENUGETOBJECT      = 0x0124; private const UInt32 WM_MENURBUTTONUP      = 0x0122; private const UInt32 WM_MENUSELECT         = 0x011F; private const UInt32 WM_MOUSEACTIVATE      = 0x0021; private const UInt32 WM_MOUSEFIRST         = 0x0200; private const UInt32 WM_MOUSEHOVER         = 0x02A1; private const UInt32 WM_MOUSELAST          = 0x020D; private const UInt32 WM_MOUSELEAVE         = 0x02A3; private const UInt32 WM_MOUSEMOVE          = 0x0200; private const UInt32 WM_MOUSEWHEEL         = 0x020A; private const UInt32 WM_MOUSEHWHEEL        = 0x020E; private const UInt32 WM_MOVE           = 0x0003; private const UInt32 WM_MOVING         = 0x0216; private const UInt32 WM_NCACTIVATE         = 0x0086; private const UInt32 WM_NCCALCSIZE         = 0x0083; private const UInt32 WM_NCCREATE           = 0x0081; private const UInt32 WM_NCDESTROY          = 0x0082; private const UInt32 WM_NCHITTEST          = 0x0084; private const UInt32 WM_NCLBUTTONDBLCLK    = 0x00A3; private const UInt32 WM_NCLBUTTONDOWN      = 0x00A1; private const UInt32 WM_NCLBUTTONUP        = 0x00A2; private const UInt32 WM_NCMBUTTONDBLCLK    = 0x00A9; private const UInt32 WM_NCMBUTTONDOWN      = 0x00A7; private const UInt32 WM_NCMBUTTONUP        = 0x00A8; private const UInt32 WM_NCMOUSEMOVE        = 0x00A0; private const UInt32 WM_NCPAINT        = 0x0085; private const UInt32 WM_NCRBUTTONDBLCLK    = 0x00A6; private const UInt32 WM_NCRBUTTONDOWN      = 0x00A4; private const UInt32 WM_NCRBUTTONUP        = 0x00A5; private const UInt32 WM_NEXTDLGCTL         = 0x0028; private const UInt32 WM_NEXTMENU           = 0x0213; private const UInt32 WM_NOTIFY         = 0x004E; private const UInt32 WM_NOTIFYFORMAT       = 0x0055; private const UInt32 WM_NULL           = 0x0000; private const UInt32 WM_PAINT          = 0x000F; private const UInt32 WM_PAINTCLIPBOARD     = 0x0309; private const UInt32 WM_PAINTICON          = 0x0026; private const UInt32 WM_PALETTECHANGED     = 0x0311; private const UInt32 WM_PALETTEISCHANGING      = 0x0310; private const UInt32 WM_PARENTNOTIFY       = 0x0210; private const UInt32 WM_PASTE          = 0x0302; private const UInt32 WM_PENWINFIRST        = 0x0380; private const UInt32 WM_PENWINLAST         = 0x038F; private const UInt32 WM_POWER          = 0x0048; private const UInt32 WM_POWERBROADCAST     = 0x0218; private const UInt32 WM_PRINT          = 0x0317; private const UInt32 WM_PRINTCLIENT        = 0x0318; private const UInt32 WM_QUERYDRAGICON      = 0x0037; private const UInt32 WM_QUERYENDSESSION    = 0x0011; private const UInt32 WM_QUERYNEWPALETTE    = 0x030F; private const UInt32 WM_QUERYOPEN          = 0x0013; private const UInt32 WM_QUEUESYNC          = 0x0023; private const UInt32 WM_QUIT           = 0x0012; private const UInt32 WM_RBUTTONDBLCLK      = 0x0206; private const UInt32 WM_RBUTTONDOWN        = 0x0204; private const UInt32 WM_RBUTTONUP          = 0x0205; private const UInt32 WM_RENDERALLFORMATS       = 0x0306; private const UInt32 WM_RENDERFORMAT       = 0x0305; private const UInt32 WM_SETCURSOR          = 0x0020; private const UInt32 WM_SETFOCUS           = 0x0007; private const UInt32 WM_SETFONT        = 0x0030; private const UInt32 WM_SETHOTKEY          = 0x0032; private const UInt32 WM_SETICON        = 0x0080; private const UInt32 WM_SETREDRAW          = 0x000B; private const UInt32 WM_SETTEXT        = 0x000C; private const UInt32 WM_SETTINGCHANGE      = 0x001A; private const UInt32 WM_SHOWWINDOW         = 0x0018; private const UInt32 WM_SIZE           = 0x0005; private const UInt32 WM_SIZECLIPBOARD      = 0x030B; private const UInt32 WM_SIZING         = 0x0214; private const UInt32 WM_SPOOLERSTATUS      = 0x002A; private const UInt32 WM_STYLECHANGED       = 0x007D; private const UInt32 WM_STYLECHANGING      = 0x007C; private const UInt32 WM_SYNCPAINT          = 0x0088; private const UInt32 WM_SYSCHAR        = 0x0106; private const UInt32 WM_SYSCOLORCHANGE     = 0x0015; private const UInt32 WM_SYSCOMMAND         = 0x0112; private const UInt32 WM_SYSDEADCHAR        = 0x0107; private const UInt32 WM_SYSKEYDOWN         = 0x0104; private const UInt32 WM_SYSKEYUP           = 0x0105; private const UInt32 WM_TCARD          = 0x0052; private const UInt32 WM_TIMECHANGE         = 0x001E; private const UInt32 WM_TIMER          = 0x0113; private const UInt32 WM_UNDO           = 0x0304; private const UInt32 WM_UNINITMENUPOPUP    = 0x0125; private const UInt32 WM_USER           = 0x0400; private const UInt32 WM_USERCHANGED        = 0x0054; private const UInt32 WM_VKEYTOITEM         = 0x002E; private const UInt32 WM_VSCROLL        = 0x0115; private const UInt32 WM_VSCROLLCLIPBOARD       = 0x030A; private const UInt32 WM_WINDOWPOSCHANGED       = 0x0047; private const UInt32 WM_WINDOWPOSCHANGING      = 0x0046; private const UInt32 WM_WININICHANGE       = 0x001A; private const UInt32 WM_XBUTTONDBLCLK      = 0x020D; private const UInt32 WM_XBUTTONDOWN        = 0x020B; private const UInt32 WM_XBUTTONUP          = 0x020C;