X11 Mouse Movement Event

Question

When creating a Window in XLib

1. What are the masks I provide to the SetWindowAttributes.event_mask member?
2. What do I have to pass to the 11th paramater of XCreateWindow()
3. What are the Events I am looking for in the main message loop (Where I use XNextEvent(lDisplay, &xEvent);?
4. Since X behaves differently than Microsoft's Win32 API, how do I determine if the mouse is over my window or a window in my "Application" and not over the desktop?

I have looked for a similar post. If there is already one out there please point me in the right direction.

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Update

For those who want the easy answer to parts 1-3:

1.

xAttributes.event_mask =  ExposureMask | KeyPressMask | ButtonPress |
                          StructureNotifyMask | ButtonReleaseMask |
                          KeyReleaseMask | EnterWindowMask | LeaveWindowMask |
                          PointerMotionMask | Button1MotionMask | VisibilityChangeMask |
                          ColormapChangeMask;

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2.

unsigned long valuemask = CWEventMask | CWBackPixel | CWBorderPixel | CWCursor;

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1.                 switch (xEvent.type)
                   {
                   case MapNotify:
                       break;
                   case Expose:
                       // If this is not the last expose event break
                       if (xEvent.xexpose.count != 0)
                           break;
                       else
                           break;
                   case ConfigureNotify:
                       break;
                   case VisibilityNotify:
                       break;
                   case DestroyNotify:
                       break;
                   case ButtonPress:
                   case ButtonRelease:
                   case EnterNotify:
                   case MotionNotify:
                   case LeaveNotify:
                       if(_mouseHandler)
                           _mouseHandler->HandleInput(lDisplay, &xEvent);
                       break;
                   case KeyPress:
                   case KeyRelease:
                       if(_keyboardHandler)
                           _keyboardHandler->HandleInput(lDisplay, &xEvent);
                       break;
                   default:
                       if(_keyboardHandler)
                           _keyboardHandler->HandleInput(lDisplay, &xEvent);
                       break;
                   }
   

Answer 1

XLib is pretty well documented. For example XLib Programming Manual: Event Masks

Answer 2

The first three are well-documented, I think.

To determine whether the mouse is over your window, listen to Enter and Leave events. The xev utility is a great way to understand what events exist in the X window system, and when they are sent.