X11 Mouse Movement Event

c linux x11 xlib mousemove
Matthew Hoggan picture Matthew Hoggan · Feb 20, 2012 · Viewed 12.2k times · Source

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.

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; 

  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

Jim Garrison picture Jim Garrison · Feb 20, 2012

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

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