Re: Combobox focus event

[Thomas Rønshof <tr kyborg dk>]

Thanks :-))

I'l try that.

Thomas



On 07-04-2017 23:10, cecashon aol com wrote:
> Hi Nicola,
>
> The "set-focus-child" on the container fires for the "focus-in-event" 
> and "focus-out-event". I forgot about those container functions 
> though. You can get the toggle button pointer from the container and 
> set up your "focus-in-event". That way there is no ugly business of 
> using a private structure.
>
> Eric
>
>
> /*
>     gcc -Wall combo_focus2.c -o combo_focus2 `pkg-config gtk+-3.0 
> --cflags --libs`
>     Tested on Ubuntu16.04, GTK3.18.
>
>     https://bugzilla.gnome.org/show_bug.cgi?id=599076
>     Bugzilla Bug 599076 - GtkComboBox missing focus events
> */
>
> #include<gtk/gtk.h>
>
> static void find_toggle_button(GtkWidget *widget, GtkWidget 
> **toggle_button);
> static gboolean focus_button1(GtkWidget *widget, GdkEvent *event, 
> gpointer user_data);
> static gboolean focus_combo(GtkWidget *widget, GdkEvent *event, 
> gpointer user_data);
> static gboolean focus_button2(GtkWidget *widget, GdkEvent *event, 
> gpointer user_data);
> static void focus_combo_container(GtkContainer *container, GtkWidget 
> *widget, gpointer user_data);
>
> int main(int argc, char *argv[])
>   {
>     gtk_init(&argc, &argv);
>
>     GtkWidget *window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
>     gtk_window_set_title(GTK_WINDOW(window), "Combo Focus");
>     gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
>     gtk_container_set_border_width(GTK_CONTAINER(window), 10);
>     gtk_window_set_default_size(GTK_WINDOW(window), 200, 100);
>     g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
>
>     GtkWidget *button1=gtk_button_new_with_label("Button1");
>     gtk_widget_set_hexpand(button1, TRUE);
>     gtk_widget_set_vexpand(button1, TRUE);
>     g_signal_connect(button1, "focus-in-event", 
> G_CALLBACK(focus_button1), NULL);
>
>     GtkWidget *combo=gtk_combo_box_text_new();
>     gtk_combo_box_text_insert(GTK_COMBO_BOX_TEXT(combo), 0, "1", 
> "Turtle");
>     gtk_combo_box_text_insert(GTK_COMBO_BOX_TEXT(combo), 1, "2", "Koala");
>     gtk_combo_box_text_insert(GTK_COMBO_BOX_TEXT(combo), 2, "3", 
> "Cheetah");
>     gtk_combo_box_set_active(GTK_COMBO_BOX(combo), 0);
>     gtk_widget_set_hexpand(combo, TRUE);
>     GtkWidget *toggle_button=NULL;
>     gtk_container_forall(GTK_CONTAINER(combo), 
> (GtkCallback)find_toggle_button, &toggle_button);
>     g_signal_connect(toggle_button, "focus-in-event", 
> G_CALLBACK(focus_combo), NULL);
>
>     g_signal_connect(combo, "set-focus-child", 
> G_CALLBACK(focus_combo_container), NULL);
>
>     GtkWidget *button2=gtk_button_new_with_label("Button2");
>     gtk_widget_set_hexpand(button2, TRUE);
>     gtk_widget_set_vexpand(button2, TRUE);
>     g_signal_connect(button2, "focus-in-event", 
> G_CALLBACK(focus_button2), NULL);
>
>     GtkWidget *grid=gtk_grid_new();
>     gtk_grid_attach(GTK_GRID(grid), button1, 0, 0, 1, 1);
>     gtk_grid_attach(GTK_GRID(grid), combo, 0, 1, 1, 1);
>     gtk_grid_attach(GTK_GRID(grid), button2, 0, 2, 1, 1);
>
>     gtk_container_add(GTK_CONTAINER(window), grid);
>     gtk_widget_show_all(window);
>
>     gtk_main();
>
>     return 0;
>   }
> static void find_toggle_button(GtkWidget *widget, GtkWidget 
> **toggle_button)
>   {
>     if(g_strcmp0(gtk_widget_get_name(widget), "GtkToggleButton")==0)
>       {
>         g_print("Found Toggle Button in Combo\n");
>         *toggle_button=widget;
>       }
>   }
> static gboolean focus_button1(GtkWidget *widget, GdkEvent *event, 
> gpointer user_data)
>   {
>     g_print("Button1 Focus\n");
>     return FALSE;
>   }
> static gboolean focus_combo(GtkWidget *widget, GdkEvent *event, 
> gpointer user_data)
>   {
>     g_print("Combo Focus In\n");
>     return FALSE;
>   }
> static gboolean focus_button2(GtkWidget *widget, GdkEvent *event, 
> gpointer user_data)
>   {
>     g_print("Button2 Focus\n");
>     return FALSE;
>   }
> static void focus_combo_container(GtkContainer *container, GtkWidget 
> *widget, gpointer user_data)
>   {
>     g_print("Combo Container Focus\n");
>   }