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<HTML><HEAD><TITLE>Packing Demonstration Program</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.49"><LINKREL="HOME"TITLE="GTK+ 1.2 Tutorial"HREF="gtk-tut.html"><LINKREL="UP"TITLE="Packing Widgets"HREF="ch-packingwidgets.html"><LINKREL="PREVIOUS"TITLE="Details of Boxes"HREF="sec-detailsofboxes.html"><LINKREL="NEXT"TITLE="Packing Using Tables"HREF="sec-packingusingtables.html"></HEAD></head><body bgcolor="#FFFFFF" marginheight=0 marginwidth=0 width="100%"><table cellspacing=6 border=0 cellpadding=0 width="100%"> <tr> <td bgcolor="#FFFFFF" valign=top nowrap> <centeR><A HREF="/"><img src="/images/gtk-logo-rgb.gif" width=107 height=140 border=0></A> <font face="helvetica,lucidia" color="#000000"><BR><BR><b>GTK+<BR>The GIMP Toolkit</b></center><BR><table width=100% cellspacing=0 cellpadding=2 border=0><tr><td bgcolor="#000000"><table width=100% cellspacing=0 cellpadding=4 border=0><tr><td bgcolor="#AAAAEE" nowrap><B>General</B></td></tr><tr><td bgcolor="#FFFFFF" nowrap><A HREF="/">Introduction</A><BR><A HREF="/screenshots/">Screenshots</A><br><A HREF="/download/">Download</A><br><A HREF="/mailinglists.html">Mailing Lists</A><BR><A HREF="/bindings.html">Language Bindings</A><BR><A HREF="http://gtk.themes.org/">Themes</A><BR><A HREF="/bugs.html">Bug Tracker</A><BR></td></tr></table></td></tr></table><BR> <table width=100% cellspacing=0 cellpadding=2 border=0><tr><td bgcolor="#000000"><table width=100% cellspacing=0 cellpadding=4 border=0><tr><td bgcolor="#AAAAEE" nowrap><B>Documentation</B></td></tr><tr><td bgcolor="#FFFFFF" nowrap><A HREF="/faq/">FAQ</A><br><A HREF="/tutorial/">Tutorial</A><BR><A HREF="/api/">API Reference</A><br><A HREF="/books.html">Published Books</A><BR></td></tr></table></td></tr></table><BR> <table width=100% cellspacing=0 cellpadding=2 border=0><tr><td bgcolor="#000000"><table width=100% cellspacing=0 cellpadding=4 border=0><tr><td bgcolor="#AAAAEE" nowrap><B>Projects</B></td></tr><tr><td bgcolor="#FFFFFF" nowrap><A HREF="http://www.pango.org/">Pango</A><BR><A HREF="http://sources.redhat.com/inti/">Inti</A><BR><A HREF="http://www.gnome.org/">GNOME</A><BR><A HREF="http://user.sgic.fi/~tml/gimp/win32/">GTK+ for Win32</A><br><A HREF="http://people.redhat.com/sopwith/gtkfb/">GtkFB (Framebuffer)</A><br><A HREF="http://www.directfb.org/gtk.xml">GTK+ on DirectFB</A><BR><A HREF="/beos/">GTK+ for BeOS</A></td></tr></table></td></tr></table><BR> <table width=100% cellspacing=0 cellpadding=2 border=0><tr><td bgcolor="#000000"><table width=100% cellspacing=0 cellpadding=4 border=0><tr><td bgcolor="#AAAAEE" nowrap><B><B>Applications</B></B></td></tr><tr><td bgcolor="#FFFFFF" nowrap><A HREF="http://www.gimp.org/">GIMP</A><BR><A HREF="http://www.abiword.org/">Abiword</A><BR><A HREF="http://www.lysator.liu.se/~alla/dia/dia.html">Dia</A><BR><A HREF="http://glade.pn.org/">Glade</A><BR><A HREF="http://www.gnucash.org/">GnuCash</A><BR><A HREF="http://www.gnome.org/projects/gnumeric/">Gnumeric</A><BR><BR><A HREF="http://www.gnome.org/applist/">GNOME Software Map</A><br></td></tr></table></td></tr></table><BR> </td> <td bgcolor="#ffffff" valign=top width="99%"><font face="lucida,helvetica"><BODYCLASS="SECT1"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">GTK+ 1.2 Tutorial</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="sec-detailsofboxes.html"><<< Previous</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 4. Packing Widgets</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="sec-packingusingtables.html">Next >>></A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="SEC-PACKINGDEMONSTRATIONPROGRAM">4.3. Packing Demonstration Program</A></H1><TABLEBORDER="0"BGCOLOR="#E0E0E0"WIDTH="100%"><TR><TD><PRECLASS="PROGRAMLISTING">/* example-start packbox packbox.c */#include <stdio.h>#include <stdlib.h>#include "gtk/gtk.h"gint delete_event( GtkWidget *widget, GdkEvent *event, gpointer data ){ gtk_main_quit(); return(FALSE);}/* 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.\n"); /* 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 delete_event signal * to the main window. This is very important for proper intuitive * behavior */ gtk_signal_connect (GTK_OBJECT (window), "delete_event", GTK_SIGNAL_FUNC (delete_event), NULL); gtk_container_set_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 = TRUE, 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 is 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 terminate the program when the button is clicked */ gtk_signal_connect_object (GTK_OBJECT (button), "clicked", GTK_SIGNAL_FUNC (gtk_main_quit), 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);}/* example-end */</PRE></TD></TR></TABLE></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="sec-detailsofboxes.html"><<< Previous</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="gtk-tut.html">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="sec-packingusingtables.html">Next >>></A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Details of Boxes</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ch-packingwidgets.html">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Packing Using Tables</TD></TR></TABLE></DIV> </td> </tr></table> </td> </tr></table></body></BODY></HTML>⌨️ 快捷键说明
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