GtkGrid – Part II

#include <gtk/gtk.h>

static void activate_clbk ( GtkApplication *application )
{
    GtkWidget *window;
    GtkWidget *grid;
    GtkWidget *button_1;
    GtkWidget *button_2;
    GtkWidget *button_3;
    GtkWidget *button_4;

    /// ***
    window = gtk_application_window_new   ( application );
    gtk_window_set_default_size ( GTK_WINDOW ( window ), 300, 300 );

    /// ***
    grid = gtk_grid_new ();

    /// ***
    button_1 = gtk_button_new_with_label ( "One button" );
    gtk_widget_set_name ( button_1, "One button" );

    button_2 = gtk_button_new_with_label ( "Another button" );
    gtk_widget_set_name ( button_2, "Another button" );

    button_3 = gtk_button_new_with_label ( "Open button" );
    gtk_widget_set_name ( button_3, "Open button" );

    button_4 = gtk_button_new_with_label ( "Quit app" );
    gtk_widget_set_name ( button_4, "Quit app" );

    /// ***
    gtk_grid_attach ( GTK_GRID ( grid ), button_1, 0, 0, 1, 1 );
    gtk_grid_attach ( GTK_GRID ( grid ), button_2, 1, 0, 1, 1 );
    ///gtk_grid_attach ( GTK_GRID ( grid ), button_3, 0, 1, 1, 1 );
    ///gtk_grid_attach ( GTK_GRID ( grid ), button_4, 1, 1, 1, 1 );

    /// ***
    gtk_grid_attach_next_to ( GTK_GRID ( grid ), button_3, button_1, GTK_POS_BOTTOM, 1, 1 );
    gtk_grid_attach_next_to ( GTK_GRID ( grid ), button_4, button_3, GTK_POS_RIGHT,  1, 1 );

    /// ***
    gtk_grid_set_row_homogeneous ( GTK_GRID ( grid ), TRUE );
    gtk_grid_set_column_homogeneous ( GTK_GRID ( grid ), TRUE );
    gtk_grid_set_row_spacing ( GTK_GRID ( grid ), 10 );
    gtk_grid_set_column_spacing ( GTK_GRID ( grid ), 10 );

    /// ***
    GtkWidget *child;
    child = gtk_grid_get_child_at ( GTK_GRID ( grid ), 0, 1 ); /// button_3
    g_print ( "Child is: %s\n", gtk_widget_get_name ( child ) );

    /// ***
    int col, row, width, height;
    gtk_grid_query_child ( GTK_GRID ( grid ), child, &col, &row, &width, &height );
    g_print ( "Col:    %d\n", col );
    g_print ( "Row:    %d\n", row );
    g_print ( "Width:  %d\n", width );
    g_print ( "Height: %d\n", height );

    /// ***
    gtk_grid_query_child ( GTK_GRID ( grid ), button_3, &col, &row, &width, &height );
    g_print ( "\nCol:    %d\n", col );
    g_print ( "Row:    %d\n", row );
    g_print ( "Width:  %d\n", width );
    g_print ( "Height: %d\n", height );

    /// ***
    gtk_window_set_child ( GTK_WINDOW ( window ), grid );

    /// ***
    gtk_window_present ( GTK_WINDOW ( window ) );
}

int main ( void )
{
    GtkApplication *application;
    gint status;

    /// ***
    application = gtk_application_new ( "this.is.my-nice.app", G_APPLICATION_FLAGS_NONE );

    /// ***
    g_signal_connect ( application, "activate", G_CALLBACK ( activate_clbk ), NULL );

    /// ***
    status = g_application_run ( G_APPLICATION ( application ), FALSE, NULL );

    /// ***
    g_object_unref ( application );
    return status;
}