Re: [Vala] X11 and pointers help

[Axel FILMORE <axel filmore gmail com>]

You can do this using Gdk I think :
http://valadoc.org/gdk-3.0/Gdk.Screen.get_window_stack.html

That doesn't explain the compilation error however.

Regards.



On 13/01/2012 18:58, Andrew Higginson wrote:
> On 13/01/12 17:20, Andrew Higginson wrote:
> > Hi,
> >
> > I am trying to get a list of the open windows using
> > _NET_CLIENT_LIST_STACKING (it is important I use this as I need it in
> > the order of stacking) as seen here
> > http://standards.freedesktop.org/wm-spec/wm-spec-1.3.html#id2449346
> >
> > To do this I am using the Xlib bindings for vala with the following
> > code, however I cannot get the code at the end of this message to compile
> >
> > Any help? If I am honest, I am not really sure what the void* stuff is
> > about :/
> Should also say this is what I get when I compile (C file at the end of
> this message) - sorry :)
>
> /tmp/window.vala.c: In function ‘_vala_main’:
> /tmp/window.vala.c:71:10: error: variable or field ‘_tmp19_’ declared void
> /tmp/window.vala.c:91:22: warning: dereferencing ‘void *’ pointer
> [enabled by default]
> /tmp/window.vala.c:91:13: error: void value not ignored as it ought to be
> error: cc exited with status 256
>
> --
> Andrew
>
>
> /* window.c generated by valac 0.14.0, the Vala compiler
>   * generated from window.vala, do not modify */
>
>
> #include<glib.h>
> #include<glib-object.h>
> #include<stdlib.h>
> #include<string.h>
> #include<X11/Xlib.h>
> #include<X11/Xatom.h>
> #include<X11/Xutil.h>
> #include<X11/Xregion.h>
> #include<stdio.h>
>
> #define _g_free0(var) (var = (g_free (var), NULL))
> #define _XCloseDisplay0(var) ((var == NULL) ? NULL : (var =
> (XCloseDisplay (var), NULL)))
>
>
>
> gint _vala_main (gchar** args, int args_length1);
>
>
> gint _vala_main (gchar** args, int args_length1) {
>         gint result = 0;
>         Display* _tmp0_;
>         Display* xdisplay;
>         Atom type = {0};
>         gint format = 0;
>         gulong nitems = 0UL;
>         gulong bytes_after = 0UL;
>         void* list = NULL;
>         Display* _tmp1_;
>         Display* _tmp2_;
>         Window _tmp3_ = 0;
>         Display* _tmp4_;
>         Atom _tmp5_ = {0};
>         glong _tmp6_;
>         Atom _tmp7_ = {0};
>         gint _tmp8_ = 0;
>         gulong _tmp9_ = 0UL;
>         gulong _tmp10_ = 0UL;
>         void* _tmp11_ = NULL;
>         void* _tmp24_;
>         XInitThreads ();
>         _tmp0_ = XOpenDisplay (NULL);
>         xdisplay = _tmp0_;
>         _tmp1_ = xdisplay;
>         _tmp2_ = xdisplay;
>         _tmp3_ = DefaultRootWindow (_tmp2_);
>         _tmp4_ = xdisplay;
>         _tmp5_ = XInternAtom (_tmp4_, "_NET_CLIENT_LIST_STACKING", TRUE);
>         _tmp6_ = G_MAXLONG;
>         XGetWindowProperty (_tmp1_, _tmp3_, _tmp5_, (glong) 0, _tmp6_, FALSE,
> XA_CARDINAL,&_tmp7_,&_tmp8_,&_tmp9_,&_tmp10_, (unsigned char **)
> (&_tmp11_));
>         type = _tmp7_;
>         format = _tmp8_;
>         nitems = _tmp9_;
>         bytes_after = _tmp10_;
>         list = _tmp11_;
>         {
>                 gint i;
>                 i = 0;
>                 {
>                         gboolean _tmp12_;
>                         _tmp12_ = TRUE;
>                         while (TRUE) {
>                                 gboolean _tmp13_;
>                                 gint _tmp15_;
>                                 gulong _tmp16_;
>                                 void* _tmp17_;
>                                 gint _tmp18_;
>                                 void _tmp19_;
>                                 gulong xid;
>                                 FILE* _tmp20_;
>                                 gulong _tmp21_;
>                                 gchar* _tmp22_ = NULL;
>                                 gchar* _tmp23_;
>                                 _tmp13_ = _tmp12_;
>                                 if (!_tmp13_) {
>                                         gint _tmp14_;
>                                         _tmp14_ = i;
>                                         i = _tmp14_ + 1;
>                                 }
>                                 _tmp12_ = FALSE;
>                                 _tmp15_ = i;
>                                 _tmp16_ = nitems;
>                                 if (!(((gulong) _tmp15_)<  _tmp16_)) {
>                                         break;
>                                 }
>                                 _tmp17_ = list;
>                                 _tmp18_ = i;
>                                 _tmp19_ = _tmp17_[_tmp18_];
>                                 xid = (gulong) _tmp19_;
>                                 _tmp20_ = stdout;
>                                 _tmp21_ = xid;
>                                 _tmp22_ = g_strdup_printf ("%lu", _tmp21_);
>                                 _tmp23_ = _tmp22_;
>                                 fprintf (_tmp20_, "%s", _tmp23_);
>                                 _g_free0 (_tmp23_);
>                         }
>                 }
>         }
>         _tmp24_ = list;
>         XFree (_tmp24_);
>         result = 0;
>         _XCloseDisplay0 (xdisplay);
>         return result;
> }
>
>
> int main (int argc, char ** argv) {
>         g_type_init ();
>         return _vala_main (argv, argc);
> }
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--
Axel FILMORE