To see definitions of these messages, see http://www.pinvoke.net/default.aspx/Constants/WM.html
If you know a definition/description of one or more of these messages, PLEASE add it to the above page. Use one of the already created definitions as an example.
C# Definition:
public enum WindowsMessages : uint
{
WM_ACTIVATE = 0x6,
WM_ACTIVATEAPP = 0x1C,
WM_AFXFIRST = 0x360,
WM_AFXLAST = 0x37F,
WM_APP = 0x8000,
WM_ASKCBFORMATNAME = 0x30C,
WM_CANCELJOURNAL = 0x4B,
WM_CANCELMODE = 0x1F,
WM_CAPTURECHANGED = 0x215,
WM_CHANGECBCHAIN = 0x30D,
WM_CHAR = 0x102,
WM_CHARTOITEM = 0x2F,
WM_CHILDACTIVATE = 0x22,
WM_CLEAR = 0x303,
WM_CLOSE = 0x10,
WM_COMMAND = 0x111,
WM_COMPACTING = 0x41,
WM_COMPAREITEM = 0x39,
WM_CONTEXTMENU = 0x7B,
WM_COPY = 0x301,
WM_COPYDATA = 0x4A,
WM_CREATE = 0x1,
WM_CTLCOLORBTN = 0x135,
WM_CTLCOLORDLG = 0x136,
WM_CTLCOLOREDIT = 0x133,
WM_CTLCOLORLISTBOX = 0x134,
WM_CTLCOLORMSGBOX = 0x132,
WM_CTLCOLORSCROLLBAR = 0x137,
WM_CTLCOLORSTATIC = 0x138,
WM_CUT = 0x300,
WM_DEADCHAR = 0x103,
WM_DELETEITEM = 0x2D,
WM_DESTROY = 0x2,
WM_DESTROYCLIPBOARD = 0x307,
WM_DEVICECHANGE = 0x219,
WM_DEVMODECHANGE = 0x1B,
WM_DISPLAYCHANGE = 0x7E,
WM_DRAWCLIPBOARD = 0x308,
WM_DRAWITEM = 0x2B,
WM_DROPFILES = 0x233,
WM_ENABLE = 0xA,
WM_ENDSESSION = 0x16,
WM_ENTERIDLE = 0x121,
WM_ENTERMENULOOP = 0x211,
WM_ENTERSIZEMOVE = 0x231,
WM_ERASEBKGND = 0x14,
WM_EXITMENULOOP = 0x212,
WM_EXITSIZEMOVE = 0x232,
WM_FONTCHANGE = 0x1D,
WM_GETDLGCODE = 0x87,
WM_GETFONT = 0x31,
WM_GETHOTKEY = 0x33,
WM_GETICON = 0x7F,
WM_GETMINMAXINFO = 0x24,
WM_GETOBJECT = 0x3D,
WM_GETSYSMENU = 0x313,
WM_GETTEXT = 0xD,
WM_GETTEXTLENGTH = 0xE,
WM_HANDHELDFIRST = 0x358,
WM_HANDHELDLAST = 0x35F,
WM_HELP = 0x53,
WM_HOTKEY = 0x312,
WM_HSCROLL = 0x114,
WM_HSCROLLCLIPBOARD = 0x30E,
WM_ICONERASEBKGND = 0x27,
WM_IME_CHAR = 0x286,
WM_IME_COMPOSITION = 0x10F,
WM_IME_COMPOSITIONFULL = 0x284,
WM_IME_CONTROL = 0x283,
WM_IME_ENDCOMPOSITION = 0x10E,
WM_IME_KEYDOWN = 0x290,
WM_IME_KEYLAST = 0x10F,
WM_IME_KEYUP = 0x291,
WM_IME_NOTIFY = 0x282,
WM_IME_REQUEST = 0x288,
WM_IME_SELECT = 0x285,
WM_IME_SETCONTEXT = 0x281,
WM_IME_STARTCOMPOSITION = 0x10D,
WM_INITDIALOG = 0x110,
WM_INITMENU = 0x116,
WM_INITMENUPOPUP = 0x117,
WM_INPUT = 0x00FF,
WM_INPUTLANGCHANGE = 0x51,
WM_INPUTLANGCHANGEREQUEST = 0x50,
WM_KEYDOWN = 0x100,
WM_KEYFIRST = 0x100,
WM_KEYLAST = 0x108,
WM_KEYUP = 0x101,
WM_KILLFOCUS = 0x8,
WM_LBUTTONDBLCLK = 0x203,
WM_LBUTTONDOWN = 0x201,
WM_LBUTTONUP = 0x202,
WM_MBUTTONDBLCLK = 0x209,
WM_MBUTTONDOWN = 0x207,
WM_MBUTTONUP = 0x208,
WM_MDIACTIVATE = 0x222,
WM_MDICASCADE = 0x227,
WM_MDICREATE = 0x220,
WM_MDIDESTROY = 0x221,
WM_MDIGETACTIVE = 0x229,
WM_MDIICONARRANGE = 0x228,
WM_MDIMAXIMIZE = 0x225,
WM_MDINEXT = 0x224,
WM_MDIREFRESHMENU = 0x234,
WM_MDIRESTORE = 0x223,
WM_MDISETMENU = 0x230,
WM_MDITILE = 0x226,
WM_MEASUREITEM = 0x2C,
WM_MENUCHAR = 0x120,
WM_MENUCOMMAND = 0x126,
WM_MENUDRAG = 0x123,
WM_MENUGETOBJECT = 0x124,
WM_MENURBUTTONUP = 0x122,
WM_MENUSELECT = 0x11F,
WM_MOUSEACTIVATE = 0x21,
WM_MOUSEFIRST = 0x200,
WM_MOUSEHOVER = 0x2A1,
WM_MOUSELAST = 0x20A,
WM_MOUSELEAVE = 0x2A3,
WM_MOUSEMOVE = 0x200,
WM_MOUSEWHEEL = 0x20A,
WM_MOUSEHWHEEL = 0x20E,
WM_MOVE = 0x3,
WM_MOVING = 0x216,
WM_NCACTIVATE = 0x86,
WM_NCCALCSIZE = 0x83,
WM_NCCREATE = 0x81,
WM_NCDESTROY = 0x82,
WM_NCHITTEST = 0x84,
WM_NCLBUTTONDBLCLK = 0xA3,
WM_NCLBUTTONDOWN = 0xA1,
WM_NCLBUTTONUP = 0xA2,
WM_NCMBUTTONDBLCLK = 0xA9,
WM_NCMBUTTONDOWN = 0xA7,
WM_NCMBUTTONUP = 0xA8,
WM_NCMOUSEHOVER = 0x2A0,
WM_NCMOUSELEAVE = 0x2A2,
WM_NCMOUSEMOVE = 0xA0,
WM_NCPAINT = 0x85,
WM_NCRBUTTONDBLCLK = 0xA6,
WM_NCRBUTTONDOWN = 0xA4,
WM_NCRBUTTONUP = 0xA5,
WM_NEXTDLGCTL = 0x28,
WM_NEXTMENU = 0x213,
WM_NOTIFY = 0x4E,
WM_NOTIFYFORMAT = 0x55,
WM_NULL = 0x0,
WM_PAINT = 0xF,
WM_PAINTCLIPBOARD = 0x309,
WM_PAINTICON = 0x26,
WM_PALETTECHANGED = 0x311,
WM_PALETTEISCHANGING = 0x310,
WM_PARENTNOTIFY = 0x210,
WM_PASTE = 0x302,
WM_PENWINFIRST = 0x380,
WM_PENWINLAST = 0x38F,
WM_POWER = 0x48,
WM_PRINT = 0x317,
WM_PRINTCLIENT = 0x318,
WM_QUERYDRAGICON = 0x37,
WM_QUERYENDSESSION = 0x11,
WM_QUERYNEWPALETTE = 0x30F,
WM_QUERYOPEN = 0x13,
WM_QUERYUISTATE = 0x129,
WM_QUEUESYNC = 0x23,
WM_QUIT = 0x12,
WM_RBUTTONDBLCLK = 0x206,
WM_RBUTTONDOWN = 0x204,
WM_RBUTTONUP = 0x205,
WM_RENDERALLFORMATS = 0x306,
WM_RENDERFORMAT = 0x305,
WM_SETCURSOR = 0x20,
WM_SETFOCUS = 0x7,
WM_SETFONT = 0x30,
WM_SETHOTKEY = 0x32,
WM_SETICON = 0x80,
WM_SETREDRAW = 0xB,
WM_SETTEXT = 0xC,
WM_SETTINGCHANGE = 0x1A,
WM_SHOWWINDOW = 0x18,
WM_SIZE = 0x5,
WM_SIZECLIPBOARD = 0x30B,
WM_SIZING = 0x214,
WM_SPOOLERSTATUS = 0x2A,
WM_STYLECHANGED = 0x7D,
WM_STYLECHANGING = 0x7C,
WM_SYNCPAINT = 0x88,
WM_SYSCHAR = 0x106,
WM_SYSCOLORCHANGE = 0x15,
WM_SYSCOMMAND = 0x112,
WM_SYSDEADCHAR = 0x107,
WM_SYSKEYDOWN = 0x104,
WM_SYSKEYUP = 0x105,
WM_SYSTIMER = 0x118, // undocumented, see http://support.microsoft.com/?id=108938
WM_TCARD = 0x52,
WM_TIMECHANGE = 0x1E,
WM_TIMER = 0x113,
WM_UNDO = 0x304,
WM_UNINITMENUPOPUP = 0x125,
WM_USER = 0x400,
WM_USERCHANGED = 0x54,
WM_VKEYTOITEM = 0x2E,
WM_VSCROLL = 0x115,
WM_VSCROLLCLIPBOARD = 0x30A,
WM_WINDOWPOSCHANGED = 0x47,
WM_WINDOWPOSCHANGING = 0x46,
WM_WININICHANGE = 0x1A,
WM_XBUTTONDBLCLK = 0x20D,
WM_XBUTTONDOWN = 0x20B,
WM_XBUTTONUP = 0x20C
}
VB Definition:
Enum WindowMessages
WM_ACTIVATE = &H6
WM_ACTIVATEAPP = &H1C
WM_AFXFIRST = &H360
WM_AFXLAST = &H37F
WM_APP = &H8000
WM_ASKCBFORMATNAME = &H30C
WM_CANCELJOURNAL = &H4B
WM_CANCELMODE = &H1F
WM_CAPTURECHANGED = &H215
WM_CHANGECBCHAIN = &H30D
WM_CHAR = &H102
WM_CHARTOITEM = &H2F
WM_CHILDACTIVATE = &H22
WM_CLEAR = &H303
WM_CLOSE = &H10
WM_COMMAND = &H111
WM_COMPACTING = &H41
WM_COMPAREITEM = &H39
WM_CONTEXTMENU = &H7B
WM_COPY = &H301
WM_COPYDATA = &H4A
WM_CREATE = &H1
WM_CTLCOLORBTN = &H135
WM_CTLCOLORDLG = &H136
WM_CTLCOLOREDIT = &H133
WM_CTLCOLORLISTBOX = &H134
WM_CTLCOLORMSGBOX = &H132
WM_CTLCOLORSCROLLBAR = &H137
WM_CTLCOLORSTATIC = &H138
WM_CUT = &H300
WM_DEADCHAR = &H103
WM_DELETEITEM = &H2D
WM_DESTROY = &H2
WM_DESTROYCLIPBOARD = &H307
WM_DEVICECHANGE = &H219
WM_DEVMODECHANGE = &H1B
WM_DISPLAYCHANGE = &H7E
WM_DRAWCLIPBOARD = &H308
WM_DRAWITEM = &H2B
WM_DROPFILES = &H233
WM_ENABLE = &HA
WM_ENDSESSION = &H16
WM_ENTERIDLE = &H121
WM_ENTERMENULOOP = &H211
WM_ENTERSIZEMOVE = &H231
WM_ERASEBKGND = &H14
WM_EXITMENULOOP = &H212
WM_EXITSIZEMOVE = &H232
WM_FONTCHANGE = &H1D
WM_GETDLGCODE = &H87
WM_GETFONT = &H31
WM_GETHOTKEY = &H33
WM_GETICON = &H7F
WM_GETMINMAXINFO = &H24
WM_GETOBJECT = &H3D
WM_GETSYSMENU = &H313
WM_GETTEXT = &HD
WM_GETTEXTLENGTH = &HE
WM_HANDHELDFIRST = &H358
WM_HANDHELDLAST = &H35F
WM_HELP = &H53
WM_HOTKEY = &H312
WM_HSCROLL = &H114
WM_HSCROLLCLIPBOARD = &H30E
WM_ICONERASEBKGND = &H27
WM_IME_CHAR = &H286
WM_IME_COMPOSITION = &H10F
WM_IME_COMPOSITIONFULL = &H284
WM_IME_CONTROL = &H283
WM_IME_ENDCOMPOSITION = &H10E
WM_IME_KEYDOWN = &H290
WM_IME_KEYLAST = &H10F
WM_IME_KEYUP = &H291
WM_IME_NOTIFY = &H282
WM_IME_REQUEST = &H288
WM_IME_SELECT = &H285
WM_IME_SETCONTEXT = &H281
WM_IME_STARTCOMPOSITION = &H10D
WM_INITDIALOG = &H110
WM_INITMENU = &H116
WM_INITMENUPOPUP = &H117
WM_INPUT = &H0FF
WM_INPUTLANGCHANGE = &H51
WM_INPUTLANGCHANGEREQUEST = &H50
WM_KEYDOWN = &H100
WM_KEYFIRST = &H100
WM_KEYLAST = &H108
WM_KEYUP = &H101
WM_KILLFOCUS = &H8
WM_LBUTTONDBLCLK = &H203
WM_LBUTTONDOWN = &H201
WM_LBUTTONUP = &H202
WM_MBUTTONDBLCLK = &H209
WM_MBUTTONDOWN = &H207
WM_MBUTTONUP = &H208
WM_MDIACTIVATE = &H222
WM_MDICASCADE = &H227
WM_MDICREATE = &H220
WM_MDIDESTROY = &H221
WM_MDIGETACTIVE = &H229
WM_MDIICONARRANGE = &H228
WM_MDIMAXIMIZE = &H225
WM_MDINEXT = &H224
WM_MDIREFRESHMENU = &H234
WM_MDIRESTORE = &H223
WM_MDISETMENU = &H230
WM_MDITILE = &H226
WM_MEASUREITEM = &H2C
WM_MENUCHAR = &H120
WM_MENUCOMMAND = &H126
WM_MENUDRAG = &H123
WM_MENUGETOBJECT = &H124
WM_MENURBUTTONUP = &H122
WM_MENUSELECT = &H11F
WM_MOUSEACTIVATE = &H21
WM_MOUSEFIRST = &H200
WM_MOUSEHOVER = &H2A1
WM_MOUSELAST = &H20A
WM_MOUSELEAVE = &H2A3
WM_MOUSEMOVE = &H200
WM_MOUSEWHEEL = &H20A
WM_MOUSEHWHEEL = &H20E
WM_MOVE = &H3
WM_MOVING = &H216
WM_NCACTIVATE = &H86
WM_NCCALCSIZE = &H83
WM_NCCREATE = &H81
WM_NCDESTROY = &H82
WM_NCHITTEST = &H84
WM_NCLBUTTONDBLCLK = &HA3
WM_NCLBUTTONDOWN = &HA1
WM_NCLBUTTONUP = &HA2
WM_NCMBUTTONDBLCLK = &HA9
WM_NCMBUTTONDOWN = &HA7
WM_NCMBUTTONUP = &HA8
WM_NCMOUSEHOVER = &H2A0
WM_NCMOUSELEAVE = &H2A2
WM_NCMOUSEMOVE = &HA0
WM_NCPAINT = &H85
WM_NCRBUTTONDBLCLK = &HA6
WM_NCRBUTTONDOWN = &HA4
WM_NCRBUTTONUP = &HA5
WM_NEXTDLGCTL = &H28
WM_NEXTMENU = &H213
WM_NOTIFY = &H4E
WM_NOTIFYFORMAT = &H55
WM_NULL = &H0
WM_PAINT = &HF
WM_PAINTCLIPBOARD = &H309
WM_PAINTICON = &H26
WM_PALETTECHANGED = &H311
WM_PALETTEISCHANGING = &H310
WM_PARENTNOTIFY = &H210
WM_PASTE = &H302
WM_PENWINFIRST = &H380
WM_PENWINLAST = &H38F
WM_POWER = &H48
WM_PRINT = &H317
WM_PRINTCLIENT = &H318
WM_QUERYDRAGICON = &H37
WM_QUERYENDSESSION = &H11
WM_QUERYNEWPALETTE = &H30F
WM_QUERYOPEN = &H13
WM_QUERYUISTATE = &H129
WM_QUEUESYNC = &H23
WM_QUIT = &H12
WM_RBUTTONDBLCLK = &H206
WM_RBUTTONDOWN = &H204
WM_RBUTTONUP = &H205
WM_RENDERALLFORMATS = &H306
WM_RENDERFORMAT = &H305
WM_SETCURSOR = &H20
WM_SETFOCUS = &H7
WM_SETFONT = &H30
WM_SETHOTKEY = &H32
WM_SETICON = &H80
WM_SETREDRAW = &HB
WM_SETTEXT = &HC
WM_SETTINGCHANGE = &H1A
WM_SHOWWINDOW = &H18
WM_SIZE = &H5
WM_SIZECLIPBOARD = &H30B
WM_SIZING = &H214
WM_SPOOLERSTATUS = &H2A
WM_STYLECHANGED = &H7D
WM_STYLECHANGING = &H7C
WM_SYNCPAINT = &H88
WM_SYSCHAR = &H106
WM_SYSCOLORCHANGE = &H15
WM_SYSCOMMAND = &H112
WM_SYSDEADCHAR = &H107
WM_SYSKEYDOWN = &H104
WM_SYSKEYUP = &H105
WM_SYSTIMER = &H118 ' undocumented, see http://support.microsoft.com/?id=108938
WM_TCARD = &H52
WM_TIMECHANGE = &H1E
WM_TIMER = &H113
WM_UNDO = &H304
WM_UNINITMENUPOPUP = &H125
WM_USER = &H400
WM_USERCHANGED = &H54
WM_VKEYTOITEM = &H2E
WM_VSCROLL = &H115
WM_VSCROLLCLIPBOARD = &H30A
WM_WINDOWPOSCHANGED = &H47
WM_WINDOWPOSCHANGING = &H46
WM_WININICHANGE = &H1A
WM_XBUTTONDBLCLK = &H20D
WM_XBUTTONDOWN = &H20B
WM_XBUTTONUP = &H20C
End Enum
Notes:
WM_SIZING:
You may want to use the custom-built SizingWindowSide enumeration for the wParam passed in with this message.
WM_NCHITTEST:
You may want to use the custom-built WindowHitTestRegions enumeration for the Result generated by this message.
Overall:
Example - C# - sivakumar.keerthi
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
namespace WindowsApplication1
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
/// <summary>
/// Required designer variable.
/// </summary>
[DllImport("user32.dll")]
private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);
[DllImport("user32.dll")]
private static extern bool InsertMenu (IntPtr hMenu, Int32 wPosition, Int32 wFlags, Int32 wIDNewItem, string lpNewItem);
public const Int32 WM_SYSCOMMAND = 0x112;
public const Int32 MF_SEPARATOR = 0x800;
public const Int32 MF_BYPOSITION = 0x400;
public const Int32 MF_STRING = 0x0;
public const Int32 MenuItem1 = 1000;
public const Int32 MenuItem2 = 1001;
public const Int32 WM_CLOSE = 0xF060;
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(528, 266);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
protected override void WndProc(ref Message m)
{
if(m.Msg == 0x112)
{
switch(m.WParam.ToInt32())
{
case MenuItem1:
MessageBox.Show("Clicked MenuItem1");
return;
case MenuItem2:
MessageBox.Show("Clicked MenuItem2");
return;
case WM_CLOSE:
MessageBox.Show("Can't Close");
return;
default:
break;
}
}
base.WndProc(ref m);
}
private void Form1_Load(object sender, System.EventArgs e)
{
IntPtr sysMenuHandle = GetSystemMenu(this.Handle, false);
InsertMenu(sysMenuHandle, 5, MF_BYPOSITION |MF_SEPARATOR, 0, string.Empty);
InsertMenu(sysMenuHandle, 6, MF_BYPOSITION , MenuItem1, "MenuItem1");
InsertMenu(sysMenuHandle, 7, MF_BYPOSITION , MenuItem2, "MenuItem2");
}
}
}
