Replace the g_timeout_add(1, (GtkFunction)cursor_change, data); with g_thread_create (cursor_change, data, TRUE, NULL);I also try on the function g_idle_add, but it does not perform correctly.Maybe there is a reason that can explain this phenomenon. You can launch a thread with g_idle_add or g_time_out_add, nevertheless, this new thread can not run with your main thread simultaneously. I mean , once program entering this new thread , it only can execute the main thread till it exiting from this new thread. Such function have the save effective with the follow list:gdk_threads_enter();g_thread_create (cursor_change, data, TRUE, NULL);gdk_threads_leave();We also can think this thread be locked.
gtk-list-request@xxxxxxxxx 写道:> Send gtk-list mailing list submissions to> gtk-list@xxxxxxxxx>> To subscribe or unsubscribe via the World Wide Web, visit> http://mail.gnome.org/mailman/listinfo/gtk-list> or, via email, send a message with subject or body 'help' to> gtk-list-request@xxxxxxxxx>> You can reach the person managing the list at> gtk-list-owner@xxxxxxxxx>> When replying, please edit your Subject line so it is more specific> than "Re: Contents of gtk-list digest...">>> Today's Topics:>> 1. A problem about programming with Gtk+ ( ??? )> 2. A problem about programming with Gtk+ (gordon)> 3. Application development using GTK and GLADE3 (Harinandan S)>>> ---------------------------------------------------------------------->> Message: 1> Date: Sun, 14 Dec 2008 16:55:43 +0800> From: " ??? " <gordonszkuo@xxxxxxxxx>> Subject: A problem about programming with Gtk+> To: gtk-list@xxxxxxxxx> Message-ID:> <447e7b560812140055v5b754a87g1baa5d35f0c1e95e@xxxxxxxxxxxxxx>> Content-Type: text/plain; charset="iso-8859-1">> Dear Gnome.> I got a prablem about programming in Gtk+. The following program> creat a 'Button'.But> there is a problem with the 'static void callback( GtkWidget *widget,> gpointer data )'.> In this part of the program ,i want to change the cursor before the program> executing the for-loop.> Here is the problem.In this program ,it always execute the for-loop first> and then change the> cursor.I do not understand what happen. Could you tell what's wrong with> my program and how to> fix it.Thanks.>> Gordon>>>> #include <unistd.h>> #include <stdlib.h>> #include <gtk/gtk.h>> #include <pthread.h>> /* Create a new hbox with an image and a label packed into it> * and return the box. */> static GtkWidget *xpm_label_box( gchar *xpm_filename,> gchar *label_text )> {> GtkWidget *box;> GtkWidget *label;> GtkWidget *image;>> /* Create box for image and label */> box = gtk_hbox_new (FALSE, 0);> gtk_container_set_border_width (GTK_CONTAINER (box), 2);>> /* Now on to the image stuff */> image = gtk_image_new_from_file (xpm_filename);>> /* Create a label for the button */> label = gtk_label_new (label_text);>> /* Pack the image and label into the box */> gtk_box_pack_start (GTK_BOX (box), image, FALSE, FALSE, 3);> gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 3);>> gtk_widget_show (image);> gtk_widget_show (label);>> return box;> }> static int cursor_change(gpointer data_pass)> {> GtkWidget *window = (GtkWidget *) data_pass;>>> gdk_threads_enter();> GThread *gthread;> g_thread_set_priority(gthread, G_THREAD_PRIORITY_URGENT);> g_thread_self();> {> //Set A Cursor> GdkCursor *new_cursor;> new_cursor=gdk_cursor_new(GDK_WATCH);> g_print ("I make it!");> gdk_window_set_cursor(window->window, new_cursor);> gdk_cursor_destroy(new_cursor);> }> gdk_threads_leave();> return 0;> }> /* Our usual callback function */> static void callback( GtkWidget *widget, gpointer data )> {> gint ptimer;> ptimer=g_timeout_add(1, (GtkFunction)cursor_change, data);> //ptimer=gdk_threads_add_timeout(100, (GtkFunction)cursor_change, data);>> sleep(1);>> int i,j;>> for(i=0;i<100;i++)> {> g_print ("Hello again - %s was pressed %d\n", (char *) data,i);> }>> /*> GdkCursor *renew_cursor;> renew_cursor=gdk_cursor_new(GDK_PENCIL);> gdk_window_set_cursor(window->window, renew_cursor);> gdk_cursor_destroy(renew_cursor);* */> }> int main( int argc, char *argv[] )> {> /* GtkWidget is the storage type for widgets */> GtkWidget *window;> GtkWidget *button;> GtkWidget *box;>>>> gtk_init (&argc, &argv);> /* // set foreground color is different from color key> {> GdkColor color;> GdkColormap *map;>> memset(&color, 0, sizeof(color));> color.blue = 10000;> map = gdk_colormap_get_system();> gdk_color_alloc(map, &color);> gdk_gc_set_foreground(window->style->black_gc, &color);> }*/>>>>>> gtk_rc_parse("/vpon/gui.rc");>> /* Create a new window */> window = gtk_window_new (GTK_WINDOW_TOPLEVEL);>> gtk_window_set_title (GTK_WINDOW (window), "Pixmap'd Buttons!");>> /* It's a good idea to do this for all windows. */> g_signal_connect (G_OBJECT (window), "destroy",> G_CALLBACK (gtk_main_quit), NULL);>> g_signal_connect (G_OBJECT (window), "delete_event",> G_CALLBACK (gtk_main_quit), NULL);>>>>>> /* Sets the border width of the window. */> gtk_container_set_border_width (GTK_CONTAINER (window), 10);>> /* Create a new button */> button = gtk_button_new ();>> /* Connect the "clicked" signal of the button to our callback */> g_signal_connect (G_OBJECT (button), "clicked", G_CALLBACK (callback),> (gpointer) window);>> /* This calls our box creating function */> box = xpm_label_box ("info.xpm", "cool button");>> /* Pack and show all our widgets */> gtk_widget_show (box);>> gtk_container_add (GTK_CONTAINER (button), box);>> gtk_widget_show (button);>> gtk_container_add (GTK_CONTAINER (window), button);>>> gtk_widget_show (window);>>>>>>> /* Rest in gtk_main and wait for the fun to begin! */> gtk_main ();>>> return 0;> }> -------------- next part --------------> An HTML attachment was scrubbed...> URL: </archives/gtk-list/attachments/20081214/0ea09ed5/attachment.html>>> ------------------------------>> Message: 2> Date: Mon, 15 Dec 2008 12:07:38 +0800> From: "gordon" <gordon@xxxxxxxxxxxxx>> Subject: A problem about programming with Gtk+> To: <gtk-list@xxxxxxxxx>> Message-ID: <5B2D10E518B94F1A86D865EC0F9E328D@formosa700c7a8>> Content-Type: text/plain; charset="big5">> Dear Gnome.> I got a prablem about programming in Gtk+. The following program creat a 'Button'.But > there is a problem with the 'static void callback( GtkWidget *widget, gpointer data )'.> In this part of the program ,i want to change the cursor before the program executing the for-loop.> Here is the problem.In this program ,it always execute the for-loop first and then change the > cursor.I do not understand what happen. Could you tell what's wrong with my program and how to > fix it.Thanks.> Gordon> > #include <unistd.h>> #include <stdlib.h>> #include <gtk/gtk.h>> #include <pthread.h>> /* Create a new hbox with an image and a label packed into it> * and return the box. */> static GtkWidget *xpm_label_box( gchar *xpm_filename,> gchar *label_text )> {> GtkWidget *box;> GtkWidget *label;> GtkWidget *image;> > /* Create box for image and label */> box = gtk_hbox_new (FALSE, 0);> gtk_container_set_border_width (GTK_CONTAINER (box), 2);> /* Now on to the image stuff */> image = gtk_image_new_from_file (xpm_filename);> /* Create a label for the button */> label = gtk_label_new (label_text);> /* Pack the image and label into the box */> gtk_box_pack_start (GTK_BOX (box), image, FALSE, FALSE, 3);> gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 3);> gtk_widget_show (image);> gtk_widget_show (label);> return box;> }> static int cursor_change(gpointer data_pass)> {> GtkWidget *window = (GtkWidget *) data_pass;> > > gdk_threads_enter();> GThread *gthread;> g_thread_set_priority(gthread, G_THREAD_PRIORITY_URGENT);> g_thread_self();> {> //Set A Cursor> GdkCursor *new_cursor;> new_cursor=gdk_cursor_new(GDK_WATCH);> g_print ("I make it!");> gdk_window_set_cursor(window->window, new_cursor);> gdk_cursor_destroy(new_cursor);> }> gdk_threads_leave();> return 0;> }> /* Our usual callback function */> static void callback( GtkWidget *widget, gpointer data )> {> gint ptimer;> ptimer=g_timeout_add(1, (GtkFunction)cursor_change, data);> //ptimer=gdk_threads_add_timeout(100, (GtkFunction)cursor_change, data);> > sleep(1);> > int i,j;> > for(i=0;i<100;i++)> {> g_print ("Hello again - %s was pressed %d\n", (char *) data,i);> } > > /* > GdkCursor *renew_cursor;> renew_cursor=gdk_cursor_new(GDK_PENCIL);> gdk_window_set_cursor(window->window, renew_cursor);> gdk_cursor_destroy(renew_cursor);* */ > } > int main( int argc, char *argv[] )> {> /* GtkWidget is the storage type for widgets */> GtkWidget *window;> GtkWidget *button;> GtkWidget *box;> > > gtk_init (&argc, &argv);> /* // set foreground color is different from color key> {> GdkColor color;> GdkColormap *map;> memset(&color, 0, sizeof(color));> color.blue = 10000;> map = gdk_colormap_get_system();> gdk_color_alloc(map, &color);> gdk_gc_set_foreground(window->style->black_gc, &color);> }*/> > > gtk_rc_parse("/vpon/gui.rc");> /* Create a new window */> window = gtk_window_new (GTK_WINDOW_TOPLEVEL);> gtk_window_set_title (GTK_WINDOW (window), "Pixmap'd Buttons!");> /* It's a good idea to do this for all windows. */> g_signal_connect (G_OBJECT (window), "destroy",> G_CALLBACK (gtk_main_quit), NULL);> g_signal_connect (G_OBJECT (window), "delete_event",> G_CALLBACK (gtk_main_quit), NULL);> >> > /* Sets the border width of the window. */> gtk_container_set_border_width (GTK_CONTAINER (window), 10);> /* Create a new button */> button = gtk_button_new ();>> /* Connect the "clicked" signal of the button to our callback */> g_signal_connect (G_OBJECT (button), "clicked", G_CALLBACK (callback), (gpointer) window);> /* This calls our box creating function */> box = xpm_label_box ("info.xpm", "cool button");> /* Pack and show all our widgets */> gtk_widget_show (box);> gtk_container_add (GTK_CONTAINER (button), box);> gtk_widget_show (button);> gtk_container_add (GTK_CONTAINER (window), button);> > gtk_widget_show (window);> >> > /* Rest in gtk_main and wait for the fun to begin! */> gtk_main ();> > return 0;> }> -------------- next part --------------> An HTML attachment was scrubbed...> URL: </archives/gtk-list/attachments/20081215/e8979c2f/attachment.html>>> ------------------------------>> Message: 3> Date: Tue, 16 Dec 2008 19:20:21 +0530> From: "Harinandan S" <harinandans@xxxxxxxxx>> Subject: Application development using GTK and GLADE3> To: gtk-list <gtk-list@xxxxxxxxx>> Message-ID:> <5a459d5e0812160550h6f8e14f7v54cfe9e0dcad1b76@xxxxxxxxxxxxxx>> Content-Type: text/plain; charset="iso-8859-1">> Hi All,>> I am using Gtk+ 2.12.2 and Glade 3. I create windows using glade3 and use> GtkBuilder to create widgets. My application has many windows and each> window has a builder object associated with this. At some point of time I> have many windows open. I need to change some widgets in one window> depending on changes done to other widgets in another window. For example in> one window I show a label, the current file selected and if user changes the> file using another window which has a file chooser dialog I'll update the> label.>> This requires pointer to the label. There are multiple dependencies like> this. Is there any way that I not maintain global variables and get the> pointer to other widgets? I have instances where there are more than two> windows open and multiple widget from other windows need to be accessed.> Also I cannot have all of them in one builder since I cannot afford to spend> memory to create all windows at a time.>> How to manage this and access different pointers in different windows?>> Regards,> Harinandan S> -------------- next part --------------> An HTML attachment was scrubbed...> URL: </archives/gtk-list/attachments/20081216/f08d878e/attachment.html>>> ------------------------------>> _______________________________________________> gtk-list mailing list> gtk-list@xxxxxxxxx> http://mail.gnome.org/mailman/listinfo/gtk-list>>> End of gtk-list Digest, Vol 56, Issue 22> ****************************************>>>
-- Sincerely,Alfred YoungR&D, Application Architectureswww.foxitsoftware.com
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