Re: how to display initial information of program
Hi Jh What language are you writing in? I can help in C (5+ years with GTK) and PyGtk.. just started using it. Be aware that once gtk_main() has been called everything must be done by callbacks. Anything else will cause subtle faults, although it may appear to work. The gtk_main loop controls everything until you exit the program Rgds Bill+ On 22/06/11 14:24, jh_wang2004 wrote: Hello Bill: Thanks a lot for you answer, i'm new to GTK indeed??and please forgive my poor English. Maybe I did not clearly express the intent. My app display a login dialog at first, when user clicks button, it connects database, after connection established, it destroy login dialog, then build GIOChannel , enroll some timeout callbcak function,initial video compression card's four channel etc., after these have been done, shows main window and enter mainloop. I want to display these message before main window shows, because it is relatively time-consuming. Maybe i shall use gtkprogressbar, but i can't refresh it using timeout function, for it didn't enter mainloop at that time, so i intend to display those message by using a bolderless window container, i don't know how to realize that. Can you give me some tips? Regars At 2011-06-22 06:29:21??Bill Cbi...@netspace.net.au wrote: On 22/06/11 01:16, jh_wang2004 wrote: hi all: In my app program initialization, it connects database, initializes SDL video channel,etc . these actions have been done before gtk mainloop, i want to display these initial message to user, and destroy the widget after initialization has been done, which widget shall i use? I try to use gtkdialog without button, but it seems prevents theFollow-upinstructions??for that wait for response. Regards ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list I assume you are new to GTK. So try displaying the data on the screen with a button, which when clicked destroys the fields you dont want. Alternatively have an Details button which allows the user to see this information. As they say, many ways to kill a cat (English expression; maybe they don't kill cats in your country) A modal dialog without a button should prevent any user corrupting the system, but is not normally used. Ideal for use by government employees when security is absolutely important. Rgds Bill ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: how to display initial information of program
On 22/06/11 14:24, jh_wang2004 wrote: Hello Bill: Thanks a lot for you answer, i'm new to GTK indeed??and please forgive my poor English. Maybe I did not clearly express the intent. My app display a login dialog at first, when user clicks button, it connects database, after connection established, it destroy login dialog, then build GIOChannel , enroll some timeout callbcak function,initial video compression card's four channel etc., after these have been done, shows main window and enter mainloop. I want to display these message before main window shows, because it is relatively time-consuming. What you want to do is to arrange everything around the mainloop: 1. Show the login dialog. 2. start mainloop. 3. Accept user login and start doing database stuff, video stuff in a callback of the login dialog. You could also show a progress window before doing the database stuff... 4. once the callback has done its work, hide the progress window and show the main window at the end of the callback function. see, you enter main loop pretty early. Normally, if you want to start something after the GUI is shown, you should use a idle_add() function to start your stuff in the callback, before the main loop is called. Then the idled callback will be called once the mainloop start running and the GUI is shown. Maybe i shall use gtkprogressbar, but i can't refresh it using timeout function, for it didn't enter mainloop at that time, so i intend to display those message by using a bolderless window container, i don't know how to realize that. Can you give me some tips? ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Changing a GtkToolButton icon_widget on the fly
On 22 June 2011 05:43, James jamesstew...@optusnet.com.au wrote:
Hi,
I've been trying to change the icon_widget that's displayed for a
toolbar button while the main window is displayed. I can't seem to get
the actual image to change, although the functions that call
gtk_tool_button_set_icon_widget(0 do get called. There's no warnings
either.
I do something like...
GtkWidget *eject_widget;
GtkWidget *eject_red_widget;
GtkToolButton *eject_button;
void green(void)
{
gtk_tool_button_set_icon_widget(eject_button, eject_widget);
}
void red(void)
{
gtk_tool_button_set_icon_widget(eject_button, eject_red_widget);
}
int main(int argc, char **argv)
{
snip
GtkBuilder *builder;
builder = gtk_builder_new();
gtk_builder_add_from_file(builder, stridemaster.xml, NULL);
eject_widget = GTK_WIDGET(gtk_builder_get_object(builder,
eject_tracker_image));
eject_red_widget = GTK_WIDGET(gtk_builder_get_object(builder,
eject_tracker_red_image));
eject_button = GTK_TOOL_BUTTON(gtk_builder_get_object(builder,
toolbutton_eject_tracker));
g_object_unref(G_OBJECT(builder));
gtk_widget_show(window);
gtk_main();
snip
}
What am I missing?
The problem might be to do with floating versus fixed references. GTK
will usually unreference the images once it thinks they're finished
with - ie when you change the icon, it will think you no longer wish
to use the previous icon.
Try calling g_object_ref_sink on all of the widget icons once you've
created them, and then g_object_unref after you're done.
James.
Regards,
James.
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