Re: gtk_window_set_transient_for just works to dialog?

[Andy Stewart <lazycat manatee gmail com>]

Hi David,

First, thanks for your reply.

David Nečas <yeti physics muni cz> writes:

> On Mon, Oct 12, 2009 at 09:58:45AM +0800, Andy Stewart wrote:
>> Hi all,
>> 
>> I have problem with function `gtk_window_set_transient_for`, 
>> I use gtk2hs (Haskell binding for Gtk+),
>> so don't care gtk2hs binding problem and Haskell code format, you can test my problem in C code.
>
> I tried to test in C code...
>
>> I have two window: `windowA` and `windowB`, I want make `windowB`
>> keep above `windowA` and make `windowB` modal, `windowA` has created.
>> 
>> ------------------------------> code start <------------------------------
>> windowB <- windowNew
>> windowSetTransientFor windowB windowA
>> windowSetModal windowB True             
>> ------------------------------> code end   <------------------------------
>> 
>> But above code can't work, `windowB` don't display anything, `windowB` display blank.
>
> ...and it works exactly as it should.
>
> #include <gtk/gtk.h>
>
> int
> main(int argc, char *argv[])
> {
>     GtkWidget *windowA, *windowB, *entry;
>
>     gtk_init(&argc, &argv);
>
>     windowA = gtk_window_new(GTK_WINDOW_TOPLEVEL);
>     gtk_window_set_default_size(GTK_WINDOW(windowA), 300, 240);
>     g_signal_connect(windowA, "destroy", G_CALLBACK(gtk_main_quit), NULL);
>     entry = gtk_entry_new();
>     gtk_entry_set_text(GTK_ENTRY(entry), "Window A");
>     gtk_container_add(GTK_CONTAINER(windowA), entry);
>     gtk_widget_show_all(windowA);
>
>     windowB = gtk_window_new(GTK_WINDOW_TOPLEVEL);
>     gtk_window_set_default_size(GTK_WINDOW(windowB), 200, 160);
>     gtk_window_set_transient_for(GTK_WINDOW(windowB), GTK_WINDOW(windowA));
>     gtk_window_set_position(GTK_WINDOW(windowB), GTK_WIN_POS_CENTER_ON_PARENT);
>     gtk_window_set_modal(GTK_WINDOW(windowB), TRUE);
>     entry = gtk_entry_new();
>     gtk_entry_set_text(GTK_ENTRY(entry), "Window B");
>     gtk_container_add(GTK_CONTAINER(windowB), entry);
>     gtk_widget_show_all(windowB);
>
>     gtk_main();
>
>     return 0;
> }
After run your program, then i check mine.
I found where the problem.

You use fucntion `gtk_window_fullscreen` to make `windowA` fullscreen.
Then recompile you code, you will find `windowB` can't display
correctly.

It's works fine when `windowB` is `Dialog`.

I have test C code and Haskell code, both can't work.
So i think maybe this is a bug of Gtk+ C code.

Another problem is when `windowB` is `Dialog`, `windowB` and `windowA` share `One
Focus` when you type `Alt+Tab` to switch application windows.

But if we make `windowB` is `Window` and not `Dialog`, `windowB` and
`windowA` have `Two Focus` when you type `Alt+Tab`.

What do you think?

Cheers,

  -- Andy