typedef struct {
  guint32 pixel;
  guint16 red;
  guint16 green;
  guint16 blue;
} GdkColor;

./color_chk

////////////////////////////////////////////////////////////////////////////////
#include <gtk/gtk.h>

GtkWidget *window;
GdkColor btn_color;

GtkWidget *red_entry;
GtkWidget *green_entry;
GtkWidget *blue_entry;


////////////////////////////////////////////////////////////////////////////////
void
cb_color_selected (GtkWidget *btn, gpointer user_data)
{
  gchar buf[10];

  gtk_color_button_get_color ( GTK_COLOR_BUTTON (btn), &btn_color);

  sprintf (buf, "%d", btn_color.red);
  gtk_entry_set_text (GTK_ENTRY (red_entry), buf);

  sprintf (buf, "%d", btn_color.green);
  gtk_entry_set_text (GTK_ENTRY (green_entry), buf);

  sprintf (buf, "%d", btn_color.blue);
  gtk_entry_set_text (GTK_ENTRY (blue_entry), buf);


}

//////////////////////////////////////////////////////////////////////////////
int
main (int argc, char **argv)
{
  GtkWidget *main_vbox;

  gtk_init (&argc, &argv);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title (GTK_WINDOW (window), "COLOR_CHK");
  gtk_container_set_border_width (GTK_CONTAINER (window), 2);
  g_signal_connect (G_OBJECT (window), "destroy",
                    G_CALLBACK (gtk_main_quit), NULL);
  gtk_widget_set_size_request (window, 400, 300);
  gtk_window_set_resizable(GTK_WINDOW (window), FALSE);

  main_vbox = gtk_vbox_new (FALSE, 2);
  gtk_container_add (GTK_CONTAINER (window), main_vbox);
  {
    GtkWidget *color_select_btn;
    GtkWidget *rgb_entry_table;
    GtkWidget *exit_btn;

    btn_color.red   = 0xffff;
    btn_color.green = 0xffff;
    btn_color.blue  = 0xffff;

    color_select_btn = gtk_color_button_new_with_color(&btn_color);

    gtk_box_pack_start (GTK_BOX (main_vbox), color_select_btn,
                      TRUE, TRUE, 2);

    rgb_entry_table = gtk_table_new (3, 2, FALSE);  // col, row

    gtk_box_pack_start (GTK_BOX (main_vbox), rgb_entry_table,
                      TRUE, TRUE, 2);
    {
      GtkWidget *red_label;
      GtkWidget *green_label;
      GtkWidget *blue_label;

      red_label = gtk_label_new ("Red (16bit dec)");
      green_label = gtk_label_new ("Green (16bit dec)");
      blue_label = gtk_label_new ("Blue (16bit dec)");

      red_entry = gtk_entry_new ();
      green_entry = gtk_entry_new ();
      blue_entry = gtk_entry_new ();

      gtk_widget_set_size_request (red_entry,   200, 28);
      gtk_widget_set_size_request (green_entry, 200, 28);
      gtk_widget_set_size_request (blue_entry,  200, 28);

      gtk_table_attach (GTK_TABLE (rgb_entry_table), red_label,
                      0, 1, // left - rigth
                      0, 1, // top - bottom
                      GTK_FILL | GTK_SHRINK | GTK_EXPAND,
                      GTK_FILL | GTK_SHRINK ,
                      2, 2);
      gtk_table_attach (GTK_TABLE (rgb_entry_table), red_entry,
                      1, 2, // left - rigth
                      0, 1, // top - bottom
                      GTK_FILL | GTK_SHRINK ,
                      GTK_FILL | GTK_SHRINK ,
                      2, 2);
      ////
      gtk_table_attach (GTK_TABLE (rgb_entry_table), green_label,
                      0, 1, // left - rigth
                      1, 2, // top - bottom
                      GTK_FILL | GTK_SHRINK | GTK_EXPAND,
                      GTK_FILL | GTK_SHRINK ,
                      2, 2);
      gtk_table_attach (GTK_TABLE (rgb_entry_table), green_entry,
                      1, 2, // left - rigth
                      1, 2, // top - bottom
                      GTK_FILL | GTK_SHRINK ,
                      GTK_FILL | GTK_SHRINK ,
                      2, 2);
      ////
      gtk_table_attach (GTK_TABLE (rgb_entry_table), blue_label,
                      0, 1, // left - rigth
                      2, 3, // top - bottom
                      GTK_FILL | GTK_SHRINK | GTK_EXPAND,
                      GTK_FILL | GTK_SHRINK ,
                      2, 2);
      gtk_table_attach (GTK_TABLE (rgb_entry_table), blue_entry,
                      1, 2, // left - rigth
                      2, 3, // top - bottom
                      GTK_FILL | GTK_SHRINK ,
                      GTK_FILL | GTK_SHRINK ,
                      2, 2);

    g_signal_connect ( G_OBJECT ( color_select_btn ), "color-set",
                       G_CALLBACK(cb_color_selected), NULL);


    }

    exit_btn = gtk_button_new_with_label ("Exit");
    gtk_box_pack_start (GTK_BOX (main_vbox), exit_btn,
                      TRUE, TRUE, 2);

    g_signal_connect (G_OBJECT (exit_btn), "clicked",
                      G_CALLBACK (gtk_main_quit), NULL);


  }

  gtk_widget_show_all (window);


  gtk_main ();

  return 0;
}
/////////////////////////////////////// EOF ////////////////////////////////////

CC		= gcc
CFLAGS		= `pkg-config --cflags gtk+-2.0` -g
LDFLAGS		= `pkg-config --libs-only-L gtk+-2.0`
LIBS		= `pkg-config --libs-only-l gtk+-2.0`
SRCS		= color_chk.c
OBJS		= $(SRCS:.c=.o)

PROGRAM		= color_chk

all:		$(PROGRAM)

$(PROGRAM):	$(OBJS) $(HDRS) 
		$(CC) $(OBJS) $(LDFLAGS) $(LIBS) -o $(PROGRAM)

clean:;		rm -f *.o *~ $(PROGRAM)