Re: gtk2 multithreaded programming win32 issue

["Diego Jacobi" <jacobidiego gmail com>]

I cant see that link.

Your mails was very informative, can you please explain what your last
problem is about?

Also, why do you call gtk_widget_realize(win);
Doesnt show_all realize all the widgets?



2008/8/30 Kuang-Chun Cheng <kcc1967 gmail com>:
> This message explains my question and fix my problem :-)
>
> http://www.mail-archive.com/gtk-app-devel-list gnome org/msg11790.html
>
> Since I did not found this behavior on Linux, so I think the Win32 port of Gtk+
> may still has this "bug".
>
>
> KC
>
>
> On Sat, Aug 30, 2008 at 2:08 PM, Kuang-Chun Cheng <kcc1967 gmail com> wrote:
>>>> 2008/8/28 Tor Lillqvist <tml iki fi>:
>>>>> Have the idle callback function return FALSE... Schedule it again with
>>>>> g_idle_add() whenever you have something new that needs to be done in
>>>>> the GUI thread.
>>
>> First, thanks for you guys here, I had successfully porting my Gtk2 app. from
>> Linux to Win32 :-)  However, I found a behavior of Linux and Win32 is
>> quite different ...
>> Let me explain what I'm doing:
>>
>> hello button ---> disable itself and create a thread to run non-gui job.
>>        ---> after non-gui job done, use g_add_idle() to enable hello
>> button again.
>>
>> What's odd is when I click on the button, it works OK at the first time.
>> But when I click on it again ... it stop receive my mouse event !!!!
>>
>> If I move my mouse away from the button then move it back and click on it again,
>> it works again.
>>
>> I did not see this strange behavior under Linux.  I can keep my mouse on top of
>> the button, just click on it again and again ... all clicks work perfectly.
>>
>> The source code is here (hopefully, not too long), could someone tell me what's
>> wrong in my code ??
>> My Win32 platform is WinXP/SP3, and I'm using gtk+-bundle-2.12.11.zip which I
>> downloaded from http://www.gtk.org/download-windows.html.
>>
>> Thanks a lot
>> KC
>>
>> ------------------------------------------------------------------
>> /* button2.c */
>>
>> #include <stdlib.h>
>> #include <gtk/gtk.h>
>>
>> gpointer non_gui_worker(gpointer data);
>> gboolean non_gui_idle(gpointer data);
>> void gui_cb_clicked(GtkWidget *widget, gpointer data);
>>
>> gboolean non_gui_idle(gpointer data)
>> {
>>    GtkWidget *widget = data;
>>    gtk_widget_set_sensitive(widget, TRUE);
>>    return FALSE;
>> }
>>
>> gpointer non_gui_worker(gpointer data)
>> {
>>    printf("DO SOMETHING IN NON-GUI THREAD ...\n");
>>    g_idle_add(non_gui_idle, data);
>>    return NULL;
>> }
>>
>> void gui_cb_clicked(GtkWidget *widget, gpointer data)
>> {
>>    gtk_widget_set_sensitive(widget, FALSE);
>>    g_thread_create(non_gui_worker, widget, FALSE, NULL);
>> }
>>
>> int main (int argc, char *argv[])
>> {
>>    GtkWidget *win    = NULL;
>>    GtkWidget *button = NULL;
>>
>>    g_thread_init(NULL);
>>    gdk_threads_init();
>>    gtk_init(&argc, &argv);
>>
>>    gdk_threads_enter();
>>    win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
>>    gtk_container_set_border_width(GTK_CONTAINER(win), 10);
>>
>>    g_signal_connect(G_OBJECT(win), "destroy",
>>        G_CALLBACK(gtk_main_quit), NULL);
>>
>>    gtk_widget_realize(win);
>>    button = gtk_button_new_with_label("Hello Gtk+-2.0");
>>
>>    g_signal_connect(G_OBJECT(button), "clicked",
>>        G_CALLBACK(gui_cb_clicked), (gpointer) "Data Passed");
>>
>>    gtk_container_add(GTK_CONTAINER(win), button);
>>
>>    gtk_widget_show_all(win);
>>    gtk_main();
>>    gdk_threads_leave();
>>    exit(0);
>> }
>>
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