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<HTML><HEAD><TITLE>A GtkText Example</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="Text Widget"HREF="ch-textwidget.html"><LINKREL="PREVIOUS"TITLE="Keyboard Shortcuts"HREF="sec-keyboardshortcuts.html"><LINKREL="NEXT"TITLE="Undocumented Widgets"HREF="ch-undocwidgets.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-keyboardshortcuts.html"><<< Previous</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 15. Text Widget</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="ch-undocwidgets.html">Next >>></A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="SEC-AGTKTEXTEXAMPLE">15.4. A GtkText Example</A></H1><TABLEBORDER="0"BGCOLOR="#E0E0E0"WIDTH="100%"><TR><TD><PRECLASS="PROGRAMLISTING">/* example-start text text.c *//* text.c */#include <stdio.h>#include <gtk/gtk.h>void text_toggle_editable (GtkWidget *checkbutton, GtkWidget *text){ gtk_text_set_editable(GTK_TEXT(text), GTK_TOGGLE_BUTTON(checkbutton)->active);}void text_toggle_word_wrap (GtkWidget *checkbutton, GtkWidget *text){ gtk_text_set_word_wrap(GTK_TEXT(text), GTK_TOGGLE_BUTTON(checkbutton)->active);}void close_application( GtkWidget *widget, gpointer data ){ gtk_main_quit();}int main( int argc, char *argv[] ){ GtkWidget *window; GtkWidget *box1; GtkWidget *box2; GtkWidget *hbox; GtkWidget *button; GtkWidget *check; GtkWidget *separator; GtkWidget *table; GtkWidget *vscrollbar; GtkWidget *text; GdkColormap *cmap; GdkColor color; GdkFont *fixed_font; FILE *infile; gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_widget_set_usize (window, 600, 500); gtk_window_set_policy (GTK_WINDOW(window), TRUE, TRUE, FALSE); gtk_signal_connect (GTK_OBJECT (window), "destroy", GTK_SIGNAL_FUNC(close_application), NULL); gtk_window_set_title (GTK_WINDOW (window), "Text Widget Example"); gtk_container_set_border_width (GTK_CONTAINER (window), 0); box1 = gtk_vbox_new (FALSE, 0); gtk_container_add (GTK_CONTAINER (window), box1); gtk_widget_show (box1); box2 = gtk_vbox_new (FALSE, 10); gtk_container_set_border_width (GTK_CONTAINER (box2), 10); gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0); gtk_widget_show (box2); table = gtk_table_new (2, 2, FALSE); gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2); gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2); gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0); gtk_widget_show (table); /* Create the GtkText widget */ text = gtk_text_new (NULL, NULL); gtk_text_set_editable (GTK_TEXT (text), TRUE); gtk_table_attach (GTK_TABLE (table), text, 0, 1, 0, 1, GTK_EXPAND | GTK_SHRINK | GTK_FILL, GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0); gtk_widget_show (text); /* Add a vertical scrollbar to the GtkText widget */ vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj); gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1, GTK_FILL, GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0); gtk_widget_show (vscrollbar); /* Get the system color map and allocate the color red */ cmap = gdk_colormap_get_system(); color.red = 0xffff; color.green = 0; color.blue = 0; if (!gdk_color_alloc(cmap, &color)) { g_error("couldn't allocate color"); } /* Load a fixed font */ fixed_font = gdk_font_load ("-misc-fixed-medium-r-*-*-*-140-*-*-*-*-*-*"); /* Realizing a widget creates a window for it, * ready for us to insert some text */ gtk_widget_realize (text); /* Freeze the text widget, ready for multiple updates */ gtk_text_freeze (GTK_TEXT (text)); /* Insert some colored text */ gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL, "Supports ", -1); gtk_text_insert (GTK_TEXT (text), NULL, &color, NULL, "colored ", -1); gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL, "text and different ", -1); gtk_text_insert (GTK_TEXT (text), fixed_font, &text->style->black, NULL, "fonts\n\n", -1); /* Load the file text.c into the text window */ infile = fopen("text.c", "r"); if (infile) { char buffer[1024]; int nchars; while (1) { nchars = fread(buffer, 1, 1024, infile); gtk_text_insert (GTK_TEXT (text), fixed_font, NULL, NULL, buffer, nchars); if (nchars < 1024) break; } fclose (infile); } /* Thaw the text widget, allowing the updates to become visible */ gtk_text_thaw (GTK_TEXT (text)); hbox = gtk_hbutton_box_new (); gtk_box_pack_start (GTK_BOX (box2), hbox, FALSE, FALSE, 0); gtk_widget_show (hbox); check = gtk_check_button_new_with_label("Editable"); gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, FALSE, 0); gtk_signal_connect (GTK_OBJECT(check), "toggled", GTK_SIGNAL_FUNC(text_toggle_editable), text); gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), TRUE); gtk_widget_show (check); check = gtk_check_button_new_with_label("Wrap Words"); gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, TRUE, 0); gtk_signal_connect (GTK_OBJECT(check), "toggled", GTK_SIGNAL_FUNC(text_toggle_word_wrap), text); gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), FALSE); gtk_widget_show (check); separator = gtk_hseparator_new (); gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0); gtk_widget_show (separator); box2 = gtk_vbox_new (FALSE, 10); gtk_container_set_border_width (GTK_CONTAINER (box2), 10); gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0); gtk_widget_show (box2); button = gtk_button_new_with_label ("close"); gtk_signal_connect (GTK_OBJECT (button), "clicked", GTK_SIGNAL_FUNC(close_application), NULL); gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0); GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT); gtk_widget_grab_default (button); gtk_widget_show (button); gtk_widget_show (window); gtk_main (); 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-keyboardshortcuts.html"><<< Previous</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="gtk-tut.html">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="ch-undocwidgets.html">Next >>></A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Keyboard Shortcuts</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ch-textwidget.html">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Undocumented Widgets</TD></TR></TABLE></DIV> </td> </tr></table> </td> </tr></table></body></BODY></HTML>⌨️ 快捷键说明
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