convert DWORD event constant from WinEventProc to name in C#

Question

I am using SetWinEventHook and WinEventProc to capture window messages

In WinEventProc there is a parameter "DWORD event" with a number that represnt the event

I would like to convert this number to a name

Is there a c# function to do that?

My code is based on the answer from here Setting up Hook on Windows messages

You could create an enum with values that correspond to the corresponding number. — Matt Burland, Apr 10 '13 at 13:33
It only takes a couple of minutes to cut and paste from the docs and edit it into an enum. — Matt Burland, Apr 10 '13 at 15:29

score 2 · Answer 1 · answered Mar 05 '14 at 13:25

public enum SystemEventContants : uint
{
    EVENT_SYSTEM_SOUND = 0x1,
    EVENT_SYSTEM_ALERT = 0x2,
    EVENT_SYSTEM_FOREGROUND = 0x3,
    EVENT_SYSTEM_MENUSTART = 0x4,
    EVENT_SYSTEM_MENUEND = 0x5,
    EVENT_SYSTEM_MENUPOPUPSTART = 0x6,
    EVENT_SYSTEM_MENUPOPUPEND = 0x7,
    EVENT_SYSTEM_CAPTURESTART = 0x8,
    EVENT_SYSTEM_CAPTUREEND = 0x9,
    EVENT_SYSTEM_MOVESIZESTART = 0xa,
    EVENT_SYSTEM_MOVESIZEEND = 0xb,
    EVENT_SYSTEM_CONTEXTHELPSTART = 0xc,
    EVENT_SYSTEM_CONTEXTHELPEND = 0xd,
    EVENT_SYSTEM_DRAGDROPSTART = 0xe,
    EVENT_SYSTEM_DRAGDROPEND = 0xf,
    EVENT_SYSTEM_DIALOGSTART = 0x10,
    EVENT_SYSTEM_DIALOGEND = 0x11,
    EVENT_SYSTEM_SCROLLINGSTART = 0x12,
    EVENT_SYSTEM_SCROLLINGEND = 0x13,
    EVENT_SYSTEM_SWITCHSTART = 0x14,
    EVENT_SYSTEM_SWITCHEND = 0x15,
    EVENT_SYSTEM_MINIMIZESTART = 0x16,
    EVENT_SYSTEM_MINIMIZEEND = 0x17
}

public enum ObjectEventContants : uint
{
    EVENT_OBJECT_CREATE = 0x8000,
    EVENT_OBJECT_DESTROY = 0x8001,
    EVENT_OBJECT_SHOW = 0x8002, 
    EVENT_OBJECT_HIDE = 0x8003,  
    EVENT_OBJECT_REORDER = 0x8004,
    EVENT_OBJECT_FOCUS = 0x8005,
    EVENT_OBJECT_SELECTION = 0x8006,
    EVENT_OBJECT_SELECTIONADD = 0x8007,
    EVENT_OBJECT_SELECTIONREMOVE = 0x8008,
    EVENT_OBJECT_SELECTIONWITHIN = 0x8009,
    EVENT_OBJECT_STATECHANGE = 0x800A,
    EVENT_OBJECT_LOCATIONCHANGE = 0x800B,
    EVENT_OBJECT_NAMECHANGE = 0x800C,
    EVENT_OBJECT_DESCRIPTIONCHANGE = 0x800D,  
    EVENT_OBJECT_VALUECHANGE = 0x800E,
    EVENT_OBJECT_PARENTCHANGE= 0x800F,  
    EVENT_OBJECT_HELPCHANGE= 0x8010,
    EVENT_OBJECT_DEFACTIONCHANGE = 0x8011, 
    EVENT_OBJECT_ACCELERATORCHANGE = 0x8012
}
// possible marshaling unmanaged type conflict/problem between 32/64 bit
public enum SystemObjectIDs 
{
    OBJID_WINDOW = 0x00000000,
    OBJID_SYSMENU = 0xFFFFFFFF,
    OBJID_TITLEBAR = 0xFFFFFFFE,
    OBJID_MENU = 0xFFFFFFFD,
    OBJID_CLIENT = 0xFFFFFFFC,
    OBJID_VSCROLL = 0xFFFFFFFB,
    OBJID_HSCROLL = 0xFFFFFFFA,
    OBJID_SIZEGRIP = 0xFFFFFFF9,
    OBJID_CARET = 0xFFFFFFF8,
    OBJID_CURSOR = 0xFFFFFFF7,
    OBJID_ALERT = 0xFFFFFFF6,
    OBJID_SOUND = 0xFFFFFFF5,
    OBJID_QUERYCLASSNAMEIDX = 0xFFFFFFF4,
    OBJID_NATIVEOM = 0xFFFFFFF0
}

public enum Flags
{
    WINEVENT_OUTOFCONTEXT = 0x0000,
    WINEVENT_SKIPOWNTHREAD = 0x0001,
    WINEVENT_SKIPOWNPROCESS = 0x0002,
    WINEVENT_INCONTEXT = 0x0004
}

source : winuser.h found on Google.

score 0 · Answer 2 · answered Apr 10 '13 at 14:34

It would be a bit painful, but you could try and create a T4 template to go digging around in the platform sdk C header files, parse out the values, and create the enum for you. If you do it this way, then if you get a platform SDK update with new values they would automtically get included into your enum (assuming you regenerate the T4 output again).

convert DWORD event constant from WinEventProc to name in C#

2 Answers2