gtk_tut-8.html

gtk 开发手册和参考文档。 包括gtk glib gdk等

    checkbutton = gtk_check_button_new_with_label ("Check me please!");
    gtk_widget_set_usize(checkbutton, 100, 75);
    gtk_widget_show (checkbutton);
    
    label = gtk_label_new ("Add spot");
    gtk_container_add (GTK_CONTAINER (checkbutton), label);
    gtk_widget_show (label);
    label = gtk_label_new ("Add page");
    gtk_notebook_insert_page (GTK_NOTEBOOK (notebook), checkbutton, label, 2);
    
    /* Now finally lets prepend pages to the notebook */
    for (i=0; i < 5; i++) {
        sprintf(bufferf, "Prepend Frame %d", i+1);
        sprintf(bufferl, "PPage %d", i+1);
        
        frame = gtk_frame_new (bufferf);
        gtk_container_border_width (GTK_CONTAINER (frame), 10);
        gtk_widget_set_usize (frame, 100, 75);
        gtk_widget_show (frame);
        
        label = gtk_label_new (bufferf);
        gtk_container_add (GTK_CONTAINER (frame), label);
        gtk_widget_show (label);
        
        label = gtk_label_new (bufferl);
        gtk_notebook_prepend_page (GTK_NOTEBOOK(notebook), frame, label);
    }
    
    /* Set what page to start at (page 4) */
    gtk_notebook_set_page (GTK_NOTEBOOK(notebook), 3);
    
    
    /* create a bunch of buttons */
    button = gtk_button_new_with_label ("close");
    gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
                               GTK_SIGNAL_FUNC (destroy), NULL);
    gtk_table_attach_defaults(GTK_TABLE(table), button, 0,1,1,2);
    gtk_widget_show(button);
    
    button = gtk_button_new_with_label ("next page");
    gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
                               (GtkSignalFunc) gtk_notebook_next_page,
                               GTK_OBJECT (notebook));
    gtk_table_attach_defaults(GTK_TABLE(table), button, 1,2,1,2);
    gtk_widget_show(button);
    
    button = gtk_button_new_with_label ("prev page");
    gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
                               (GtkSignalFunc) gtk_notebook_prev_page,
                               GTK_OBJECT (notebook));
    gtk_table_attach_defaults(GTK_TABLE(table), button, 2,3,1,2);
    gtk_widget_show(button);
    
    button = gtk_button_new_with_label ("tab position");
    gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
                               (GtkSignalFunc) rotate_book, GTK_OBJECT(notebook));
    gtk_table_attach_defaults(GTK_TABLE(table), button, 3,4,1,2);
    gtk_widget_show(button);
    
    button = gtk_button_new_with_label ("tabs/border on/off");
    gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
                               (GtkSignalFunc) tabsborder_book,
                               GTK_OBJECT (notebook));
    gtk_table_attach_defaults(GTK_TABLE(table), button, 4,5,1,2);
    gtk_widget_show(button);
    
    button = gtk_button_new_with_label ("remove page");
    gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
                               (GtkSignalFunc) remove_book,
                               GTK_OBJECT(notebook));
    gtk_table_attach_defaults(GTK_TABLE(table), button, 5,6,1,2);
    gtk_widget_show(button);
    
    gtk_widget_show(table);
    gtk_widget_show(window);
    
    gtk_main ();
    
    return 0;
}
</PRE>
</CODE></BLOCKQUOTE>

<P>
<P>
<H2><A NAME="ss8.2">8.2 卷动视窗</A>
</H2>

<P>
卷动视窗是用来产生在视窗内可卷动的区域.
您可以在卷动视窗中插入任意种物件,
而不管视窗大小如何, 这些物件因为在卷动区域内, 因此都可以被用到.

<P>您可以用以下函数来产生卷动视窗:
<P>
<BLOCKQUOTE><CODE>
<PRE>
GtkWidget* gtk_scrolled_window_new (GtkAdjustment *hadjustment,
                                    GtkAdjustment *vadjustment);
</PRE>
</CODE></BLOCKQUOTE>
<P>
第一个参数是水平调整方向,
第二个是垂直调整方向.
它们一般被设为NULL.

<P>
<BLOCKQUOTE><CODE>
<PRE>
void gtk_scrolled_window_set_policy      (GtkScrolledWindow *scrolled_window,
                                          GtkPolicyType      hscrollbar_policy,
                                                                                  GtkPolicyType      vscrollbar_policy);
</PRE>
</CODE></BLOCKQUOTE>
<P>
第一个参数是想要改变的视窗.
第二个是设定水平卷动的方式,
第三个是垂直卷动的方式.  

<P>
policy可以是GTK_POLICY_AUTOMATIC, 或GTK_POLICY_ALWAYS.
GTK_POLICY_AUTOMATIC会自动决定是否使用scrollbars.
GTK_POLICY_ALWAYS则scrollbars始终在那里.

<P>
这里是个将100个双态按钮包进一个卷动视窗的范例.

<P>
<BLOCKQUOTE><CODE>
<PRE>
#include &lt;gtk/gtk.h&gt;

void destroy(GtkWidget *widget, gpointer *data)
{
    gtk_main_quit();
}

int main (int argc, char *argv[])
{
    static GtkWidget *window;
    GtkWidget *scrolled_window;
    GtkWidget *table;
    GtkWidget *button;
    char buffer[32];
    int i, j;
    
    gtk_init (&amp;argc, &amp;argv);
    
    /* Create a new dialog window for the scrolled window to be
     * packed into.  A dialog is just like a normal window except it has a 
     * vbox and a horizontal seperator packed into it.  It's just a shortcut
     * for creating dialogs */
    window = gtk_dialog_new ();
    gtk_signal_connect (GTK_OBJECT (window), &quot;destroy&quot;,
                        (GtkSignalFunc) destroy, NULL);
    gtk_window_set_title (GTK_WINDOW (window), &quot;dialog&quot;);
    gtk_container_border_width (GTK_CONTAINER (window), 0);
    
    /* create a new scrolled window. */
    scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    
    gtk_container_border_width (GTK_CONTAINER (scrolled_window), 10);
    
    /* the policy is one of GTK_POLICY AUTOMATIC, or GTK_POLICY_ALWAYS.
     * GTK_POLICY_AUTOMATIC will automatically decide whether you need
     * scrollbars, wheras GTK_POLICY_ALWAYS will always leave the scrollbars
     * there.  The first one is the horizontal scrollbar, the second, 
     * the vertical. */
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
                                    GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
    /* The dialog window is created with a vbox packed into it. */                                                              
    gtk_box_pack_start (GTK_BOX (GTK_DIALOG(window)-&gt;vbox), scrolled_window, 
                        TRUE, TRUE, 0);
    gtk_widget_show (scrolled_window);
    
    /* create a table of 10 by 10 squares. */
    table = gtk_table_new (10, 10, FALSE);
    
    /* set the spacing to 10 on x and 10 on y */
    gtk_table_set_row_spacings (GTK_TABLE (table), 10);
    gtk_table_set_col_spacings (GTK_TABLE (table), 10);
    
    /* pack the table into the scrolled window */
    gtk_container_add (GTK_CONTAINER (scrolled_window), table);
    gtk_widget_show (table);
    
    /* this simply creates a grid of toggle buttons on the table
     * to demonstrate the scrolled window. */
    for (i = 0; i &lt; 10; i++)
            for (j = 0; j &lt; 10; j++) {
                sprintf (buffer, &quot;button (%d,%d)\n&quot;, i, j);
                button = gtk_toggle_button_new_with_label (buffer);
                gtk_table_attach_defaults (GTK_TABLE (table), button,
                                           i, i+1, j, j+1);
                gtk_widget_show (button);
            }
    
    /* Add a &quot;close&quot; button to the bottom of the dialog */
    button = gtk_button_new_with_label (&quot;close&quot;);
    gtk_signal_connect_object (GTK_OBJECT (button), &quot;clicked&quot;,
                               (GtkSignalFunc) gtk_widget_destroy,
                               GTK_OBJECT (window));
    
    /* this makes it so the button is the default. */
    
    GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (window)-&gt;action_area), button, TRUE, TRUE, 0);
    
    /* This grabs this button to be the default button. Simply hitting
     * the &quot;Enter&quot; key will cause this button to activate. */
    gtk_widget_grab_default (button);
    gtk_widget_show (button);
    
    gtk_widget_show (window);
    
    gtk_main();
    
    return(0);
}
</PRE>
</CODE></BLOCKQUOTE>
<P>
玩弄一下这个视窗.
您会看到scrollbars如何反应.
您也会想用用gtk_widget_set_usize()来设定视窗内定的大小.

<P>
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