X11 Mouse Movement Event

Question

When creating a Window in XLib

What are the masks I provide to the SetWindowAttributes.event_mask member?
What do I have to pass to the 11th paramater of XCreateWindow()
What are the Events I am looking for in the main message loop (Where I use XNextEvent(lDisplay, &xEvent);?
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.

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;

2.

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

                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;
                }

XLib is pretty well documented. Did you try searching the Internet? For example [XLib Programming Manual: Event Masks](http://tronche.com/gui/x/xlib/events/mask.html) — Jim Garrison, Feb 20 '12 at 07:14

score 4 · Accepted Answer · answered Feb 20 '12 at 07:18

4

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

answered Feb 20 '12 at 07:18

Jim Garrison

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Just letting you know - that link is broken now. – NmdMystery Feb 18 '16 at 23:42
Not anymore, it's not. – striking Mar 05 '16 at 20:57

score 2 · Answer 2 · answered Feb 20 '12 at 07:20

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.

answered Feb 20 '12 at 07:20

Simon Richter

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I had completely forgotten about `xev`, very useful indeed. – erb Dec 31 '14 at 15:31

X11 Mouse Movement Event

2 Answers2

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