xlib: allow overlay of other windows in full-screen Post: 302340869

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Special Forums UNIX and Linux Applications xlib: allow overlay of other windows in full-screen Post 302340869 by aerosmith on Tuesday 4th of August 2009 02:10:39 PM

08-04-2009

Registered User

xlib: allow overlay of other windows in full-screen

Hi,

I am using the feh slideshow program in full-screen mode. While the slide show is in progress I would like to draw some other windows (something like clock or calendar from gdesklets) on top of this slideshow. Currently feh does not allow me to do that. Below is the code that feh uses to create a window. Any ideas on how to allow feh to give focus to other windows while it is playing the slide show? I have posted a question to feh but looks like the project is dead. Any ideas or information is really appreciated.

Code:

  XSetWindowAttributes attr;
  XClassHint *xch;
  MWMHints mwmhints;
  Atom prop = None;
  attr.backing_store = NotUseful;
  attr.override_redirect = False;
  attr.colormap = cm;
  attr.border_pixel = 0;
  attr.background_pixel = 0;
  attr.save_under = False;
  attr.event_mask =
    StructureNotifyMask | ButtonPressMask | ButtonReleaseMask |
    PointerMotionMask | EnterWindowMask | LeaveWindowMask | KeyPressMask |
    KeyReleaseMask | ButtonMotionMask | ExposureMask | FocusChangeMask |
    PropertyChangeMask | VisibilityChangeMask;

  if (opt.borderless || ret->full_screen) {
    prop = XInternAtom(disp, "_MOTIF_WM_HINTS", True);
    if (prop == None) {
      weprintf("Window Manager does not support MWM hints. "
               "To get a borderless window I have to bypass your wm.");
      attr.override_redirect = True;
      mwmhints.flags = 0;
    } else {
      mwmhints.flags = MWM_HINTS_DECORATIONS;
      mwmhints.decorations = 0;
    }
  } else
    mwmhints.flags = 0;

  ret->win =
    XCreateWindow(disp, DefaultRootWindow(disp), x, y, w, h, 0, depth,
                  InputOutput, vis,
                  CWOverrideRedirect | CWSaveUnder | CWBackingStore |
                  CWColormap | CWBackPixel | CWBorderPixel | CWEventMask,
                  &attr);

  if (mwmhints.flags) {
    XChangeProperty(disp, ret->win, prop, prop, 32, PropModeReplace,
                    (unsigned char *) &mwmhints, PROP_MWM_HINTS_ELEMENTS);
  }

  XSetWMProtocols(disp, ret->win, &wmDeleteWindow, 1);

Last edited by Yogesh Sawant; 08-07-2009 at 04:35 AM.. Reason: added code tags

aerosmith

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LEARN ABOUT HPUX

xtbuildeventmask

XtBuildEventMask() XtBuildEventMask()

Name
XtBuildEventMask - retrieve a widget's event mask.

Synopsis
EventMask XtBuildEventMask(w)
Widget w;

Inputs
w Specifies the widget. Must be of class Core or any subclass thereof.

Returns
An event mask with a bit set for each event type the widget is receiving.

Description
XtBuildEventMask() returns a widget's event mask. The mask reflects the events the widget is currently selecting. (If the widget is unre-
alized, then the mask reflects the events the widget will select when it is realized.) This event mask is the logical OR of all event
masks selected by adding event handlers and event translations (including accelerators). It is updated whenever event handlers or transla-
tions are installed or removed for the specified widget.

Structures
The event_mask is formed by combining the event mask symbols listed in the table below using the bitwise OR operator ( ). Each mask symbol
sets a bit in the event_mask.

NoEventMask Button1MotionMask StructureNotifyMask
KeyPressMask Button2MotionMask ResizeRedirectMask
KeyReleaseMask Button3MotionMask SubstructureNotifyMask
ButtonPressMask Button4MotionMask SubstructureRedirectMask
ButtonReleaseMask Button5MotionMask FocusChangeMask
EnterWindowMask ButtonMotionMask PropertyChangeMask
LeaveWindowMask KeymapStateMask ColormapChangeMask
PointerMotionMask ExposureMask OwnerGrabButtonMask
PointerMotionHintMask VisibilityChangeMask

See Also
XtAddEventHandler(1), XtAddRawEventHandler(1), XtRealizeWidget(1).

Xt - Event Handling XtBuildEventMask()