Here is a port of SDLvncviewer to GTK+2.

I think it may encourage people to implement more features for the viewer,
because a GTK GUI seems to be easier to implement than a SDL one
(and it is more integrated with the major Linux Desktops out there).

Signed-off-by: Christian Beier <dontmind@freeshell.org>

2 files changed, 677 insertions, 1 deletions

diff --git a/client_examples/Makefile.am b/client_examples/Makefile.am
index 8619dc2..2779d53 100644
--- a/client_examples/Makefile.am
+++ b/client_examples/Makefile.am
@@ -28,7 +28,15 @@ endif
 SDLvncviewer_LDADD=$(LDADD) $(SDL_LIBS) $(X11_LIB)
 endif
 
-noinst_PROGRAMS=ppmtest $(SDLVIEWER) $(FFMPEG_CLIENT) backchannel
+if HAVE_LIBGTK
+GTKVIEWER=gtkvncviewer
+gtkvncviewer_SOURCES=gtkvncviewer.c
+gtkvncviewer_CFLAGS=$(GTK_CFLAGS)
+gtkvncviewer_LDADD=$(LDADD) $(GTK_LIBS)
+endif
+
+
+noinst_PROGRAMS=ppmtest $(SDLVIEWER) $(GTKVIEWER) $(FFMPEG_CLIENT) backchannel
 
 
 
diff --git a/client_examples/gtkvncviewer.c b/client_examples/gtkvncviewer.c
new file mode 100644
index 0000000..9e9e72b
--- /dev/null
+++ b/client_examples/gtkvncviewer.c
@@ -0,0 +1,668 @@
+
+/*
+ * Copyright (C) 2007 - Mateus Cesar Groess
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <stdlib.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+#include <rfb/rfbclient.h>
+
+static rfbClient *cl;
+static gchar *server_cut_text = NULL;
+static gboolean framebuffer_allocated = FALSE;
+
+/* Redraw the screen from the backing pixmap */
+static gboolean expose_event (GtkWidget      *widget,
+                              GdkEventExpose *event)
+{
+	static GdkImage *image = NULL;
+
+	if (framebuffer_allocated == FALSE) {
+
+		rfbClientSetClientData (cl, gtk_init, widget);
+
+		image = gdk_drawable_get_image (widget->window, 0, 0,
+		                                widget->allocation.width,
+		                                widget->allocation.height);
+
+		cl->frameBuffer= image->mem;
+
+		cl->width  = widget->allocation.width;
+		cl->height = widget->allocation.height;
+
+		cl->format.bitsPerPixel = image->bits_per_pixel;
+		cl->format.redShift     = image->visual->red_shift;
+		cl->format.greenShift   = image->visual->green_shift;
+		cl->format.blueShift    = image->visual->blue_shift;
+
+		cl->format.redMax   = (1 << image->visual->red_prec) - 1;
+		cl->format.greenMax = (1 << image->visual->green_prec) - 1;
+		cl->format.blueMax  = (1 << image->visual->blue_prec) - 1;
+
+		SetFormatAndEncodings (cl);
+
+		framebuffer_allocated = TRUE;
+	}
+
+	gdk_draw_image (GDK_DRAWABLE (widget->window),
+	                widget->style->fg_gc[gtk_widget_get_state(widget)],
+	                image,
+	                event->area.x, event->area.y,
+	                event->area.x, event->area.y,
+	                event->area.width, event->area.height);
+
+	return FALSE;
+}
+
+struct { int gdk; int rfb; } buttonMapping[] = {
+	{ GDK_BUTTON1_MASK, rfbButton1Mask },
+	{ GDK_BUTTON2_MASK, rfbButton2Mask },
+	{ GDK_BUTTON3_MASK, rfbButton3Mask },
+	{ 0, 0 }
+};
+
+static gboolean button_event (GtkWidget      *widget,
+                              GdkEventButton *event)
+{
+	int x, y;
+	GdkModifierType state;
+	int i, buttonMask;
+
+	gdk_window_get_pointer (event->window, &x, &y, &state);
+
+	for (buttonMask = 0, i = 0; buttonMapping[i].gdk; i++)
+		if (state & buttonMapping[i].gdk)
+			buttonMask |= buttonMapping[i].rfb;
+	SendPointerEvent (cl, x, y, buttonMask);
+
+	return TRUE;
+}
+
+static gboolean motion_notify_event (GtkWidget *widget,
+                                     GdkEventMotion *event)
+{
+	int x, y;
+	GdkModifierType state;
+	int i, buttonMask;
+
+	if (event->is_hint)
+		gdk_window_get_pointer (event->window, &x, &y, &state);
+	else {
+		x = event->x;
+		y = event->y;
+		state = event->state;
+	}
+
+	for (buttonMask = 0, i = 0; buttonMapping[i].gdk; i++)
+		if (state & buttonMapping[i].gdk)
+			buttonMask |= buttonMapping[i].rfb;
+	SendPointerEvent (cl, x, y, buttonMask);
+
+	return TRUE;
+}
+
+static void got_cut_text (rfbClient *cl, const char *text, int textlen)
+{
+	if (server_cut_text != NULL) {
+		g_free (server_cut_text);
+		server_cut_text = NULL;
+	}
+
+	server_cut_text = g_strdup (text);
+}
+
+void received_text_from_clipboard (GtkClipboard *clipboard,
+                                   const gchar *text,
+                                   gpointer data)
+{
+	if (text)
+		SendClientCutText (cl, (char *) text, strlen (text));
+}
+
+static void clipboard_local_to_remote (GtkMenuItem *menuitem,
+                                       gpointer     user_data)
+{
+	GtkClipboard *clipboard;
+
+	clipboard = gtk_widget_get_clipboard (GTK_WIDGET (menuitem),
+	                                      GDK_SELECTION_CLIPBOARD);
+	gtk_clipboard_request_text (clipboard, received_text_from_clipboard,
+	                            NULL);
+}
+
+static void clipboard_remote_to_local (GtkMenuItem *menuitem,
+                                       gpointer     user_data)
+{
+	GtkClipboard *clipboard;
+
+	clipboard = gtk_widget_get_clipboard (GTK_WIDGET (menuitem),
+	                                      GDK_SELECTION_CLIPBOARD);
+
+	gtk_clipboard_set_text (clipboard, server_cut_text,
+	                        strlen (server_cut_text));
+}
+
+static void request_screen_refresh (GtkMenuItem *menuitem,
+                                    gpointer     user_data)
+{
+	SendFramebufferUpdateRequest (cl, 0, 0, cl->width, cl->height, FALSE);
+}
+
+static void send_f8 (GtkMenuItem *menuitem,
+                     gpointer     user_data)
+{
+	SendKeyEvent(cl, XK_F8, TRUE);
+	SendKeyEvent(cl, XK_F8, FALSE);
+}
+
+static void send_crtl_alt_del (GtkMenuItem *menuitem,
+                               gpointer     user_data)
+{
+	SendKeyEvent(cl, XK_Control_L, TRUE);
+	SendKeyEvent(cl, XK_Alt_L, TRUE);
+	SendKeyEvent(cl, XK_Delete, TRUE);
+	SendKeyEvent(cl, XK_Alt_L, FALSE);
+	SendKeyEvent(cl, XK_Control_L, FALSE);
+	SendKeyEvent(cl, XK_Delete, FALSE);
+}
+
+GtkWidget *dialog_connecting = NULL;
+
+static void show_connect_window(int argc, char **argv)
+{
+	GtkWidget *label;
+	char buf[256];
+
+	dialog_connecting = gtk_dialog_new_with_buttons ("VNC Viewer",
+	                                       NULL,
+	                                       GTK_DIALOG_DESTROY_WITH_PARENT,
+	                                       /*GTK_STOCK_CANCEL,
+	                                       GTK_RESPONSE_CANCEL,*/
+	                                       NULL);
+
+	/* FIXME: this works only when address[:port] is at end of arg list */
+	char *server;
+	if(argc==1)
+	    server = "localhost";
+	else
+	   server = argv[argc-1];
+	snprintf(buf, 255, "Connecting to %s...", server);
+
+	label = gtk_label_new (buf);
+	gtk_widget_show (label);
+
+	gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog_connecting)->vbox),
+	                   label);
+
+	gtk_widget_show (dialog_connecting);
+
+	while (gtk_events_pending ())
+		gtk_main_iteration ();
+}
+
+static void show_popup_menu()
+{
+	GtkWidget *popup_menu;
+	GtkWidget *menu_item;
+
+	popup_menu = gtk_menu_new ();
+
+	menu_item = gtk_menu_item_new_with_label ("Dismiss popup");
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menu_item);
+
+	menu_item = gtk_menu_item_new_with_label ("Clipboard: local -> remote");
+	g_signal_connect (G_OBJECT (menu_item), "activate",
+	                  G_CALLBACK (clipboard_local_to_remote), NULL);
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menu_item);
+
+	menu_item = gtk_menu_item_new_with_label ("Clipboard: local <- remote");
+	g_signal_connect (G_OBJECT (menu_item), "activate",
+	                  G_CALLBACK (clipboard_remote_to_local), NULL);
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menu_item);
+
+	menu_item = gtk_menu_item_new_with_label ("Request refresh");
+	g_signal_connect (G_OBJECT (menu_item), "activate",
+	                  G_CALLBACK (request_screen_refresh), NULL);
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menu_item);
+
+	menu_item = gtk_menu_item_new_with_label ("Send ctrl-alt-del");
+	g_signal_connect (G_OBJECT (menu_item), "activate",
+	                  G_CALLBACK (send_crtl_alt_del), NULL);
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menu_item);
+
+	menu_item = gtk_menu_item_new_with_label ("Send F8");
+	g_signal_connect (G_OBJECT (menu_item), "activate",
+	                  G_CALLBACK (send_f8), NULL);
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (popup_menu), menu_item);
+
+	gtk_menu_popup (GTK_MENU (popup_menu), NULL, NULL, NULL, NULL, 0,
+	                gtk_get_current_event_time());
+}
+
+static rfbKeySym gdkKey2rfbKeySym(guint keyval)
+{
+	rfbKeySym k = 0;
+	switch(keyval) {
+	case GDK_BackSpace: k = XK_BackSpace; break;
+	case GDK_Tab: k = XK_Tab; break;
+	case GDK_Clear: k = XK_Clear; break;
+	case GDK_Return: k = XK_Return; break;
+	case GDK_Pause: k = XK_Pause; break;
+	case GDK_Escape: k = XK_Escape; break;
+	case GDK_space: k = XK_space; break;
+	case GDK_Delete: k = XK_Delete; break;
+	case GDK_KP_0: k = XK_KP_0; break;
+	case GDK_KP_1: k = XK_KP_1; break;
+	case GDK_KP_2: k = XK_KP_2; break;
+	case GDK_KP_3: k = XK_KP_3; break;
+	case GDK_KP_4: k = XK_KP_4; break;
+	case GDK_KP_5: k = XK_KP_5; break;
+	case GDK_KP_6: k = XK_KP_6; break;
+	case GDK_KP_7: k = XK_KP_7; break;
+	case GDK_KP_8: k = XK_KP_8; break;
+	case GDK_KP_9: k = XK_KP_9; break;
+	case GDK_KP_Decimal: k = XK_KP_Decimal; break;
+	case GDK_KP_Divide: k = XK_KP_Divide; break;
+	case GDK_KP_Multiply: k = XK_KP_Multiply; break;
+	case GDK_KP_Subtract: k = XK_KP_Subtract; break;
+	case GDK_KP_Add: k = XK_KP_Add; break;
+	case GDK_KP_Enter: k = XK_KP_Enter; break;
+	case GDK_KP_Equal: k = XK_KP_Equal; break;
+	case GDK_Up: k = XK_Up; break;
+	case GDK_Down: k = XK_Down; break;
+	case GDK_Right: k = XK_Right; break;
+	case GDK_Left: k = XK_Left; break;
+	case GDK_Insert: k = XK_Insert; break;
+	case GDK_Home: k = XK_Home; break;
+	case GDK_End: k = XK_End; break;
+	case GDK_Page_Up: k = XK_Page_Up; break;
+	case GDK_Page_Down: k = XK_Page_Down; break;
+	case GDK_F1: k = XK_F1; break;
+	case GDK_F2: k = XK_F2; break;
+	case GDK_F3: k = XK_F3; break;
+	case GDK_F4: k = XK_F4; break;
+	case GDK_F5: k = XK_F5; break;
+	case GDK_F6: k = XK_F6; break;
+	case GDK_F7: k = XK_F7; break;
+	case GDK_F8: k = XK_F8; break;
+	case GDK_F9: k = XK_F9; break;
+	case GDK_F10: k = XK_F10; break;
+	case GDK_F11: k = XK_F11; break;
+	case GDK_F12: k = XK_F12; break;
+	case GDK_F13: k = XK_F13; break;
+	case GDK_F14: k = XK_F14; break;
+	case GDK_F15: k = XK_F15; break;
+	case GDK_Num_Lock: k = XK_Num_Lock; break;
+	case GDK_Caps_Lock: k = XK_Caps_Lock; break;
+	case GDK_Scroll_Lock: k = XK_Scroll_Lock; break;
+	case GDK_Shift_R: k = XK_Shift_R; break;
+	case GDK_Shift_L: k = XK_Shift_L; break;
+	case GDK_Control_R: k = XK_Control_R; break;
+	case GDK_Control_L: k = XK_Control_L; break;
+	case GDK_Alt_R: k = XK_Alt_R; break;
+	case GDK_Alt_L: k = XK_Alt_L; break;
+	case GDK_Meta_R: k = XK_Meta_R; break;
+	case GDK_Meta_L: k = XK_Meta_L; break;
+#if 0
+	/* TODO: find out keysyms */
+	case GDK_Super_L: k = XK_LSuper; break;      /* left "windows" key */
+	case GDK_Super_R: k = XK_RSuper; break;      /* right "windows" key */
+	case GDK_Multi_key: k = XK_Compose; break;
+#endif
+	case GDK_Mode_switch: k = XK_Mode_switch; break;
+	case GDK_Help: k = XK_Help; break;
+	case GDK_Print: k = XK_Print; break;
+	case GDK_Sys_Req: k = XK_Sys_Req; break;
+	case GDK_Break: k = XK_Break; break;
+	default: break;
+	}
+	if (k == 0) {
+		if (keyval < 0x100)
+			k = keyval;
+		else
+			rfbClientLog ("Unknown keysym: %d\n", keyval);
+	}
+
+	return k;
+}
+
+static gboolean key_event (GtkWidget *widget, GdkEventKey *event,
+                                 gpointer user_data)
+{
+	if ((event->type == GDK_KEY_PRESS) && (event->keyval == GDK_F8))
+		show_popup_menu();
+	else
+		SendKeyEvent(cl, gdkKey2rfbKeySym (event->keyval),
+		             (event->type == GDK_KEY_PRESS) ? TRUE : FALSE);
+	return FALSE;
+}
+
+void quit ()
+{
+	exit (0);
+}
+
+static rfbBool resize (rfbClient *client) {
+	GtkWidget *window;
+	GtkWidget *scrolled_window;
+	GtkWidget *drawing_area=NULL;
+	static char first=TRUE;
+	int tmp_width, tmp_height;
+
+	if (first) {
+		first=FALSE;
+
+		/* Create the drawing area */
+
+		drawing_area = gtk_drawing_area_new ();
+		gtk_widget_set_size_request (GTK_WIDGET (drawing_area),
+		                             client->width, client->height);
+
+		/* Signals used to handle backing pixmap */
+
+		g_signal_connect (G_OBJECT (drawing_area), "expose_event",
+		                  G_CALLBACK (expose_event), NULL);
+
+		/* Event signals */
+
+		g_signal_connect (G_OBJECT (drawing_area),
+		                  "motion-notify-event",
+		                  G_CALLBACK (motion_notify_event), NULL);
+		g_signal_connect (G_OBJECT (drawing_area),
+		                  "button-press-event",
+		                  G_CALLBACK (button_event), NULL);
+		g_signal_connect (G_OBJECT (drawing_area),
+		                  "button-release-event",
+		                  G_CALLBACK (button_event), NULL);
+
+		gtk_widget_set_events (drawing_area, GDK_EXPOSURE_MASK
+		                       | GDK_LEAVE_NOTIFY_MASK
+		                       | GDK_BUTTON_PRESS_MASK
+		                       | GDK_BUTTON_RELEASE_MASK
+		                       | GDK_POINTER_MOTION_MASK
+		                       | GDK_POINTER_MOTION_HINT_MASK);
+
+		gtk_widget_show (drawing_area);
+
+		scrolled_window = gtk_scrolled_window_new (NULL, NULL);
+		gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
+		                                GTK_POLICY_AUTOMATIC,
+		                                GTK_POLICY_AUTOMATIC);
+		gtk_scrolled_window_add_with_viewport (
+		                  GTK_SCROLLED_WINDOW (scrolled_window),
+		                  drawing_area);
+		g_signal_connect (G_OBJECT (scrolled_window),
+		                  "key-press-event", G_CALLBACK (key_event),
+		                  NULL);
+		g_signal_connect (G_OBJECT (scrolled_window),
+		                  "key-release-event", G_CALLBACK (key_event),
+		                  NULL);
+		gtk_widget_show (scrolled_window);
+
+		window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+		gtk_window_set_title (GTK_WINDOW (window), client->desktopName);
+		gtk_container_add (GTK_CONTAINER (window), scrolled_window);
+		tmp_width = (int) (
+		            gdk_screen_get_width (gdk_screen_get_default ())
+		            * 0.85);
+		if (client->width > tmp_width) {
+			tmp_height = (int) (
+			             gdk_screen_get_height (
+			                     gdk_screen_get_default ())
+			             * 0.85);
+			gtk_widget_set_size_request (window,
+			                             tmp_width, tmp_height);
+		} else {
+			gtk_widget_set_size_request (window,
+			       client->width + 2,
+			       client->height + 2);
+		}
+
+		g_signal_connect (G_OBJECT (window), "destroy",
+		                  G_CALLBACK (quit), NULL);
+
+		gtk_widget_show (window);
+	} else {
+		gtk_widget_set_size_request (GTK_WIDGET (drawing_area),
+		                             client->width, client->height);
+	}
+
+	return TRUE;
+}
+
+static void update (rfbClient *cl, int x, int y, int w, int h) {
+	GtkWidget *drawing_area = rfbClientGetClientData (cl, gtk_init);
+
+	if (drawing_area != NULL)
+		gtk_widget_queue_draw_area (drawing_area, x, y, w, h);
+}
+
+static void kbd_leds (rfbClient *cl, int value, int pad) {
+        /* note: pad is for future expansion 0=unused */
+        fprintf (stderr, "Led State= 0x%02X\n", value);
+        fflush (stderr);
+}
+
+/* trivial support for textchat */
+static void text_chat (rfbClient *cl, int value, char *text) {
+        switch (value) {
+        case rfbTextChatOpen:
+                fprintf (stderr, "TextChat: We should open a textchat window!\n");
+                TextChatOpen (cl);
+                break;
+        case rfbTextChatClose:
+                fprintf (stderr, "TextChat: We should close our window!\n");
+                break;
+        case rfbTextChatFinished:
+                fprintf (stderr, "TextChat: We should close our window!\n");
+                break;
+        default:
+                fprintf (stderr, "TextChat: Received \"%s\"\n", text);
+                break;
+        }
+        fflush (stderr);
+}
+
+static gboolean on_entry_key_press_event (GtkWidget *widget, GdkEventKey *event,
+                                          gpointer user_data)
+{
+	if (event->keyval == GDK_Escape)
+		gtk_dialog_response (GTK_DIALOG(user_data), GTK_RESPONSE_REJECT);
+	else if (event->keyval == GDK_Return)
+		gtk_dialog_response (GTK_DIALOG(user_data), GTK_RESPONSE_ACCEPT);
+
+	return FALSE;
+}
+
+static void GtkErrorLog (const char *format, ...)
+{
+	GtkWidget *dialog, *label;
+	va_list args;
+	char buf[256];
+
+	if (dialog_connecting != NULL) {
+		gtk_widget_destroy (dialog_connecting);
+		dialog_connecting = NULL;
+	}
+
+	va_start (args, format);
+	vsnprintf (buf, 255, format, args);
+	va_end (args);
+
+	if (g_utf8_validate (buf, strlen (buf), NULL)) {
+		label = gtk_label_new (buf);
+	} else {
+		const gchar *charset;
+		gchar       *utf8;
+
+		(void) g_get_charset (&charset);
+		utf8 = g_convert_with_fallback (buf, strlen (buf), "UTF-8",
+		                                charset, NULL, NULL, NULL, NULL);
+
+		if (utf8) {
+			label = gtk_label_new (utf8);
+			g_free (utf8);
+		} else {
+			label = gtk_label_new (buf);
+			g_warning ("Message Output is not in UTF-8"
+			           "nor in locale charset.\n");
+		}
+	}
+
+	dialog = gtk_dialog_new_with_buttons ("Error",
+	                                       NULL,
+	                                       GTK_DIALOG_DESTROY_WITH_PARENT,
+	                                       GTK_STOCK_OK,
+	                                       GTK_RESPONSE_ACCEPT,
+	                                       NULL);
+	label = gtk_label_new (buf);
+	gtk_widget_show (label);
+
+	gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox),
+	                   label);
+	gtk_widget_show (dialog);
+
+	switch (gtk_dialog_run (GTK_DIALOG (dialog))) {
+	case GTK_RESPONSE_ACCEPT:
+		break;
+	default:
+		break;
+	}
+	gtk_widget_destroy (dialog);
+}
+
+static void GtkDefaultLog (const char *format, ...)
+{
+	va_list args;
+	char buf[256];
+	time_t log_clock;
+
+	va_start (args, format);
+
+	time (&log_clock);
+	strftime (buf, 255, "%d/%m/%Y %X ", localtime (&log_clock));
+	fprintf (stdout, buf);
+
+	vfprintf (stdout, format, args);
+	fflush (stdout);
+
+	va_end (args);
+}
+
+static char * get_password (rfbClient *client)
+{
+	GtkWidget *dialog, *entry;
+	char *password;
+
+	gtk_widget_destroy (dialog_connecting);
+	dialog_connecting = NULL;
+
+	dialog = gtk_dialog_new_with_buttons ("Password",
+	                                       NULL,
+	                                       GTK_DIALOG_DESTROY_WITH_PARENT,
+	                                       GTK_STOCK_CANCEL,
+	                                       GTK_RESPONSE_REJECT,
+	                                       GTK_STOCK_OK,
+	                                       GTK_RESPONSE_ACCEPT,
+	                                       NULL);
+	entry = gtk_entry_new ();
+	gtk_entry_set_visibility (GTK_ENTRY (entry),
+	                          FALSE);
+	g_signal_connect (GTK_OBJECT(entry), "key-press-event",
+	                    G_CALLBACK(on_entry_key_press_event),
+	                    GTK_OBJECT (dialog));
+	gtk_widget_show (entry);
+
+	gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox),
+	                   entry);
+	gtk_widget_show (dialog);
+
+	switch (gtk_dialog_run (GTK_DIALOG (dialog))) {
+	case GTK_RESPONSE_ACCEPT:
+		password = strdup (gtk_entry_get_text (GTK_ENTRY (entry)));
+		break;
+	default:
+		password = NULL;
+		break;
+	}
+	gtk_widget_destroy (dialog);
+	return password;
+}
+
+int main (int argc, char *argv[])
+{
+	int i;
+	GdkImage *image;
+
+	rfbClientLog = GtkDefaultLog;
+	rfbClientErr = GtkErrorLog;
+
+	gtk_init (&argc, &argv);
+
+	/* create a dummy image just to make use of its properties */
+	image = gdk_image_new (GDK_IMAGE_FASTEST, gdk_visual_get_system(),
+				200, 100);
+
+	cl = rfbGetClient (image->depth / 3, 3, image->bpp);
+
+	cl->format.redShift     = image->visual->red_shift;
+	cl->format.greenShift   = image->visual->green_shift;
+	cl->format.blueShift    = image->visual->blue_shift;
+
+	cl->format.redMax   = (1 << image->visual->red_prec) - 1;
+	cl->format.greenMax = (1 << image->visual->green_prec) - 1;
+	cl->format.blueMax  = (1 << image->visual->blue_prec) - 1;
+
+	g_object_unref (image);
+
+	cl->MallocFrameBuffer = resize;
+	cl->canHandleNewFBSize = TRUE;
+	cl->GotFrameBufferUpdate = update;
+	cl->GotXCutText = got_cut_text;
+	cl->HandleKeyboardLedState = kbd_leds;
+	cl->HandleTextChat = text_chat;
+	cl->GetPassword = get_password;
+
+	show_connect_window (argc, argv);
+
+	if (!rfbInitClient (cl, &argc, argv))
+		return 1;
+
+	while (1) {
+		while (gtk_events_pending ())
+			gtk_main_iteration ();
+		i = WaitForMessage (cl, 500);
+		if (i < 0)
+			return 0;
+		if (i && framebuffer_allocated == TRUE)
+			if (!HandleRFBServerMessage(cl))
+				return 0;
+	}
+
+	gtk_main ();
+
+	return 0;
+}
+