Re: question about gtk_dialog (gtk2)

["Matthew A. Postiff" <postiffm comcast net>]

Hi,

I am learning about this, but have not totally figured it out. When I 
make a new assistant window, it appears in the upper left of the screen. 
Not at (0,0) but nearby.

  assistant = gtk_assistant_new();
  gtk_window_set_transient_for(GTK_WINDOW(assistant), transient_parent);
  gtk_window_set_title (GTK_WINDOW (assistant), title.c_str());
  gtk_window_set_modal (GTK_WINDOW (assistant), TRUE);
  //gtk_window_set_position (GTK_WINDOW(assistant), 
GTK_WIN_POS_CENTER_ON_PARENT);
  // the above line does not center the assistant
  gtk_window_set_destroy_with_parent(GTK_WINDOW(assistant), TRUE);

But the following kind of window IS centered:

  projectdialog = gtk_dialog_new();
  gtk_window_set_transient_for(GTK_WINDOW(projectdialog), 
transient_parent);
  gtk_window_set_title(GTK_WINDOW(projectdialog), _("Project properties"));
  //gtk_window_set_position(GTK_WINDOW(projectdialog), 
GTK_WIN_POS_CENTER_ON_PARENT);
  // the above doesn't matter...with or without, the dialog is centered
  gtk_window_set_modal(GTK_WINDOW(projectdialog), TRUE);
  gtk_window_set_type_hint(GTK_WINDOW(projectdialog), 
GDK_WINDOW_TYPE_HINT_DIALOG);

I don't understand it. Also, something in the gtk source code indicates 
that setting the position of a window centered can cause problems or 
doesn't work reliably, since it can "fight" with the window manager's 
preferred placement.

Anybody who knows what they are doing with this?


On 6/21/2018 2:00 AM, Wojciech Puchar wrote:
> nobody have idea?
>
>
> On 2018.06.15 13:43, Wojciech Puchar wrote:
> > how to make dialogs appear on center of screen not on left corner. 
> > tried multiple things no results. For normal windows 
> > gtk_window_set_position works
> >
> > for dialog it doesn't
> >
> > below is example routine to ask a yes/no question from my program.
> >
> >
> > i've tried 
> > gtk_window_set_position(GTK_WINDOW(dialog),GTK_WIN_POS_CENTER_ALWAYS);
> >
> > but it doesn't work
> >
> >
> > nt pytanie(const char *txt) {
> >  GtkWidget *dialog,*lab;
> >  int odpowiedz;
> >  dialog=gtk_dialog_new_with_buttons(TEXT_QUESTION,NULL,GTK_DIALOG_DESTROY_WITH_PARENT, 
> >
> >  TEXT_TAK,GTK_RESPONSE_ACCEPT,TEXT_NIE,GTK_RESPONSE_NONE,NULL);
> >  lab=new_label(txt);
> >  gtk_container_add (GTK_CONTAINER (gtk_dialog_get_content_area 
> > (GTK_DIALOG (dialog))), lab);
> >  odpowiedz=gtk_dialog_run(GTK_DIALOG(dialog));
> >  gtk_widget_destroy(dialog);
> >  return (odpowiedz==GTK_RESPONSE_ACCEPT);
> > }
>
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