GTK入门导引

void gtk_box_pack_start (GtkBox*box,
 GtkWidget *child,
 gintexpand,
 gintfill,
 gintpadding);

GtkWidget * gtk_hbox_new (gint homogeneous,
gint spacing);

#include "gtk/gtk.h"
void
destroy (GtkWidget *widget, gpointer *data)
{
gtk_main_quit ();
}
/* Make a new hbox filled with button-labels. Arguments for the 
 * variables we're interested are passed in to this function. 
 * We do not show the box, but do show everything inside. */
GtkWidget *make_box (gint homogeneous, gint spacing,
 gint expand, gint fill, gint padding) 
{
GtkWidget *box;
GtkWidget *button;
char padstr[80];
/* create a new hbox with the appropriate homogeneous and spacing
 * settings */
box = gtk_hbox_new (homogeneous, spacing);
/* create a series of buttons with the appropriate settings */
button = gtk_button_new_with_label ("gtk_box_pack");
gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
gtk_widget_show (button);
button = gtk_button_new_with_label ("(box,");
gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
gtk_widget_show (button);
button = gtk_button_new_with_label ("button,");
gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
gtk_widget_show (button);
/* create a button with the label depending on the value of
 * expand. */
if (expand == TRUE)
button = gtk_button_new_with_label ("TRUE,");
else
button = gtk_button_new_with_label ("FALSE,");
gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
gtk_widget_show (button);
/* This is the same as the button creation for "expand"
 * above, but uses the shorthand form. */
button = gtk_button_new_with_label (fill ? "TRUE," : "FALSE,");
gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
gtk_widget_show (button);
sprintf (padstr, "%d);", padding);
button = gtk_button_new_with_label (padstr);
gtk_box_pack_start (GTK_BOX (box), button, expand, fill, padding);
gtk_widget_show (button);
return box;
}
int
main (int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *button;
GtkWidget *box1;
GtkWidget *box2;
GtkWidget *separator;
GtkWidget *label;
GtkWidget *quitbox;
int which;
/* Our init, don't forget this! :) */
gtk_init (&argc, &argv);
if (argc != 2) {
fprintf (stderr, "usage: packbox num, where num is 1, 2, or 3.
");
/* this just does cleanup in GTK, and exits with an exit status of 1. */
gtk_exit (1);
}
which = atoi (argv[1]);
/* Create our window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
/* You should always remember to connect the destroy signal to the
 * main window.This is very important for proper intuitive
 * behavior */
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (destroy), NULL);
gtk_container_border_width (GTK_CONTAINER (window), 10);
/* We create a vertical box (vbox) to pack the horizontal boxes into.
 * This allows us to stack the horizontal boxes filled with buttons one
 * on top of the other in this vbox. */
box1 = gtk_vbox_new (FALSE, 0);
/* which example to show.These correspond to the pictures above. */
switch (which) {
case 1:
/* create a new label. */
label = gtk_label_new ("gtk_hbox_new (FALSE, 0);");
/* Align the label to the left side.We'll discuss this function and 
 * others in the section on Widget Attributes. */
gtk_misc_set_alignment (GTK_MISC (label), 0, 0);
/* Pack the label into the vertical box (vbox box1).Remember that 
 * widgets added to a vbox will be packed one on top of the other in
 * order. */
gtk_box_pack_start (GTK_BOX (box1), label, FALSE, FALSE, 0);
/* show the label */
gtk_widget_show (label);
/* call our make box function - homogeneous = FALSE, spacing = 0,
 * expand = FALSE, fill = FALSE, padding = 0 */
box2 = make_box (FALSE, 0, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
/* call our make box function - homogeneous = FALSE, spacing = 0,
 * expand = FALSE, fill = FALSE, padding = 0 */
box2 = make_box (FALSE, 0, TRUE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
/* Args are: homogeneous, spacing, expand, fill, padding */
box2 = make_box (FALSE, 0, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
/* creates a separator, we'll learn more about these later, 
 * but they are quite simple. */
separator = gtk_hseparator_new ();
/* pack the separator into the vbox.Remember each of these
 * widgets are being packed into a vbox, so they'll be stacked
 * vertically. */
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
gtk_widget_show (separator);
/* create another new label, and show it. */
label = gtk_label_new ("gtk_hbox_new (TRUE, 0);");
gtk_misc_set_alignment (GTK_MISC (label), 0, 0);
gtk_box_pack_start (GTK_BOX (box1), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* Args are: homogeneous, spacing, expand, fill, padding */
box2 = make_box (TRUE, 0, TRUE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
/* Args are: homogeneous, spacing, expand, fill, padding */
box2 = make_box (TRUE, 0, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
/* another new separator. */
separator = gtk_hseparator_new ();
/* The last 3 arguments to gtk_box_pack_start are: expand, fill, padding. */
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
gtk_widget_show (separator);
break;
case 2:
/* create a new label, remember box1 is a vbox as created 
 * near the beginning of main() */
label = gtk_label_new ("gtk_hbox_new (FALSE, 10);");
gtk_misc_set_alignment (GTK_MISC (label), 0, 0);
gtk_box_pack_start (GTK_BOX (box1), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* Args are: homogeneous, spacing, expand, fill, padding */
box2 = make_box (FALSE, 10, TRUE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
/* Args are: homogeneous, spacing, expand, fill, padding */
box2 = make_box (FALSE, 10, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
separator = gtk_hseparator_new ();
/* The last 3 arguments to gtk_box_pack_start are: expand, fill, padding. */
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
gtk_widget_show (separator);
label = gtk_label_new ("gtk_hbox_new (FALSE, 0);");
gtk_misc_set_alignment (GTK_MISC (label), 0, 0);
gtk_box_pack_start (GTK_BOX (box1), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* Args are: homogeneous, spacing, expand, fill, padding */
box2 = make_box (FALSE, 0, TRUE, FALSE, 10);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
/* Args are: homogeneous, spacing, expand, fill, padding */
box2 = make_box (FALSE, 0, TRUE, TRUE, 10);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
separator = gtk_hseparator_new ();
/* The last 3 arguments to gtk_box_pack_start are: expand, fill, padding. */
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
gtk_widget_show (separator);
break;
case 3:
/* This demonstrates the ability to use gtk_box_pack_end() to
 * right justify widgets.First, we create a new box as before. */
box2 = make_box (FALSE, 0, FALSE, FALSE, 0);
/* create the label that will be put at the end. */
label = gtk_label_new ("end");
/* pack it using gtk_box_pack_end(), so it is put on the right side
 * of the hbox created in the make_box() call. */
gtk_box_pack_end (GTK_BOX (box2), label, FALSE, FALSE, 0);
/* show the label. */
gtk_widget_show (label);
/* pack box2 into box1 (the vbox remember ? :) */
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
/* a separator for the bottom. */
separator = gtk_hseparator_new ();
/* this explicitly sets the separator to 400 pixels wide by 5 pixels
 * high.This is so the hbox we created will also be 400 pixels wide,
 * and the "end" label will be separated from the other labels in the
 * hbox.Otherwise, all the widgets in the hbox would be packed as
 * close together as possible. */
gtk_widget_set_usize (separator, 400, 5);
/* pack the separator into the vbox (box1) created near the start 
 * of main() */
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
gtk_widget_show (separator);
}
/* Create another new hbox.. remember we can use as many as we need! */
quitbox = gtk_hbox_new (FALSE, 0);
/* Our quit button. */
button = gtk_button_new_with_label ("Quit");
/* setup the signal to destroy the window.Remember that this will send
 * the "destroy" signal to the window which will be caught by our signal
 * handler as defined above. */
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (gtk_widget_destroy),
GTK_OBJECT (window));
/* pack the button into the quitbox.
 * The last 3 arguments to gtk_box_pack_start are: expand, fill, padding. */
gtk_box_pack_start (GTK_BOX (quitbox), button, TRUE, FALSE, 0);
/* pack the quitbox into the vbox (box1) */
gtk_box_pack_start (GTK_BOX (box1), quitbox, FALSE, FALSE, 0);
/* pack the vbox (box1) which now contains all our widgets, into the
 * main window. */
gtk_container_add (GTK_CONTAINER (window), box1);
/* and show everything left */
gtk_widget_show (button);
gtk_widget_show (quitbox);
gtk_widget_show (box1);
/* Showing the window last so everything pops up at once. */
gtk_widget_show (window);
/* And of course, our main function. */
gtk_main ();
/* control returns here when gtk_main_quit() is called, but not when 
 * gtk_exit is used. */
return 0;
}