getting the allocated size of a widget
I'm writing an image viewer application and I want to be able to scale the image being shown to fit the window, whatever size that may be. There's other stuff in the window too so getting just the window size isn't an option. What's the easiest/correct way to get the current width and height of a widget (in this case a scrolled window/viewport)? Can it be obtained from the widget's GtkAllocation? ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
signals stop working
I have an application with several GtkEntry's and a GtkTextView. I wanted to put the cut, copy and paste commands in my edit menu with the GTK_STOCK images and accelerators just for cosmetic value (GtkTextView and GtkTextEntry support the Ctrl+C, Ctrl+X and Ctrl+V shortcuts natively). To do this I have callbacks containin the commands gtk_text_buffer_cut_clipboard, gtk_text_buffer_copy_clipboard and gtk_text_buffer_paste_clipboard. The problem is that since i have accelerators now attached to these callbacks, the shortcuts like Ctrl+X only work on the main GtkTextView and won't work on the GtkEntry's when they have focus instead. How can I tell the application to simply respond how it normall would and still be able to use the GTK_STOCK items in my menus (I REALLY don't want to rewrite the menu code which currently uses the ui-manager commands)? I thought it would be something like the return FALSE or return TRUE in the standard delete_event which tells the application to procede with the action or not. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
clipboards under win32
I'm having a little difficulty understanding the concepts behind clipboards in GTK. I want to use these functions in a text editing app: gtk_text_buffer_paste_clipboard() gtk_text_buffer_copy_clipboard() gtk_text_buffer_cut_clipboard() but they all require a GtkClipboard object as an argument. After searching through the API docs, I found out that I could get the default clipboard as an object by passing GDK_NONE as the GdkAtom argument to gtk_clipboard_get(), but I still keep getting these errors when the program starts: (application.exe:612): GLib-GObject-CRITICAL **: gtype.c:2254: initialization asser tion failed, use g_type_init() prior to this function (application.exe:612): Gtk-CRITICAL **: gtk_clipboard_get_for_display: assertion `G DK_IS_DISPLAY (display)' failed and these ones whenever I use the cut, copy and paste functions: (application.exe:612): Gtk-CRITICAL **: gtk_clipboard_set_with_data: assertion `cli pboard != NULL' failed (application.exe:612): Gtk-CRITICAL **: gtk_clipboard_request_contents: assertion ` clipboard != NULL' failed Is the gtk_clipboard_get() function not working properly? Do these clipboard functions just requrire an X server? What's the deal? ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GtkTextTag usage
I'm trying to implement syntax highlighting in my text widget. Here is my
code:
static void create_tags(GtkTextBuffer *buffer)
{
gtk_text_buffer_create_tag(buffer, doctype, background,
grey, editable, FALSE, NULL);
}
static void text_changed(GtkTextBuffer *buffer, gpointer data)
{
changed = 1;
GtkTextIter start;
GtkTextIter end;
gtk_text_buffer_get_iter_at_offset(buffer, start, 0);
gtk_text_buffer_get_iter_at_offset(buffer, end, -1);
gtk_text_buffer_remove_all_tags(buffer, start, end);
gtk_text_buffer_get_iter_at_line_offset(buffer, start, 0, 0);
gtk_text_buffer_get_iter_at_line_offset(buffer, end, 1, 0);
gtk_text_buffer_apply_tag_by_name(buffer, doctype, start,
end);
}
The text_changed function is connected to the changed signal of the
buffer, and i can apply the tag fine, but when I start the application I get
this error:
(application.exe:2792): GtkWarning **: Unknown tag 'doctype'
It doesn't seem to have any affect so right now I'm just letting sleeping
dogs lie, but does anyone know what's wrong?
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activeX embedding
Does anyone know if it is possible to embed an activeX control in a GTK+ app? In particular the mozilla control or if I get desperate enough the IE one? For win32 so gtkmozembed is out although I'll probably use that when I port to linux. Thanks guys. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
g_date_set_time error on folder selection
On Windows XP. I've got a GtkFileChooser widget set up with the GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER action. Whenever I go to the My Pictures directory with the file chooser widget, I get a whole bunch of identical errors that all say: Glib-CRITICAL **: g_date_set_time: assertion 'ptm != NULL' failed Why does this happen for certain directories? Is there a way to fix it? I think it may be the same error that is causing Inkscape to crash when I try to look at the My Pictures folder as well. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
UI manager problem, more concise
Umm, lets see. I have a whole bunch of UImanager code, but none of it causes
an error until I get to this:
if (!gtk_ui_manager_add_ui_from_string (ui, ui_info, -1, error))
{
g_message (building menus failed: %s, error-message);
g_error_free (error);
}
The weird thing is that although I get a bunch of Gtk-CRITICAL errors in the
program, the GError error is not set and the message is not
displayed. Is there any problem with using the uimanager functions inside
the main() or gtk_main() functions of your program?
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Image display without window
I've seen applications (eg. mozilla and blender) display an image at startup without any (visible) container such as a window or dialog. I would like to add this touch of class to my app, anyone know the easiest way? I tried just adding a GtkImage to a GtkWindow, removing window decorations with gtk_window_set_decorated() and setting the container border width to 0, but there is still a grey border. thanks. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
UIManager errors
I'm trying to create a simple menu for my app with the new UIManager
functions under GTK+ 2.6. I've copied most of my code for it from
the the gtk-demo.exe app and I still can't get it to work. Compiles fine,
but I get a long list of errors, all of which are like these (same error for
similar code fragments):
Gtk-WARNING **: FileMenu: missing action
Gtk-CRITICAL **: gtk_container_foreach: assertion
'GTK_IS_CONTAINER(container)' failed
Gtk-CRITICAL **: gtk_menu_shell_insert: assertion
'GTK_IS_MENU_SHELL(menu_shell)' failed
Gtk-CRITICAL **: find_menu_position: assertion
'GTK_IS_MENU_SHELL(menushell)' failed
Glib-GObject-WARNING **: invalid (NULL) pointer instance
Glib-GObject-CRITICAL **: g_signal_connect_data: assertion
'G_TYPE_CHECK_INSTANCE(instance)' failed
I've been over the example and the API docs and I can't work out why this is
happening. My code is below. If anyone can help I'd be very appreciative.
-Nick
**
static GtkActionEntry entries[] = {
{ Filemenu, NULL, _File },
{ Editmenu, NULL, _Edit },
{ Helpmenu, NULL, _Help },
{ New, GTK_STOCK_NEW, _New, controln, Create New File,
G_CALLBACK(function_pendingm) },
{ Open, GTK_STOCK_OPEN, _Open, controlo, Open File,
G_CALLBACK(function_pendingm) },
{ Save, GTK_STOCK_SAVE, _Save, controls, Save File,
G_CALLBACK(function_pendingm) },
{ SaveAs, GTK_STOCK_SAVE, Save As, NULL, Save a Copy,
G_CALLBACK(function_pendingm) },
{ Quit, GTK_STOCK_QUIT, _Quit, controlq, Quit ClearSky,
G_CALLBACK(function_pendingm) },
{ Cut, GTK_STOCK_CUT, Cut, controlx, Cut Text,
G_CALLBACK(function_pendingm) },
{ Copy, GTK_STOCK_COPY, Copy, controlc, Copy Text,
G_CALLBACK(function_pendingm) },
{ Paste, GTK_STOCK_PASTE, Paste, controlv, Paste Text,
G_CALLBACK(function_pendingm) },
{ SelectAll, NULL, Select _All, controla, Select All Text,
G_CALLBACK(function_pendingm) },
{ Find, GTK_STOCK_FIND_AND_REPLACE, _Find and Replace, controlf,
Find and Replace Text, G_CALLBACK(function_pendingm) },
{ Preferences, GTK_STOCK_PREFERENCES, Preferences, NULL, Set Viewing
Preferences, G_CALLBACK(function_pendingm) },
{ HelpContents, GTK_STOCK_HELP, _Help Contents, controlh, View Help
File Contents, G_CALLBACK(function_pendingm) },
{ About, GTK_STOCK_ABOUT, _About, controla, About ClearSky,
G_CALLBACK(function_pendingm) }
};
static guint n_entries = G_N_ELEMENTS (entries);
static const gchar *ui_info =
ui
menubar name='MenuBar'
menu action='FileMenu'
menuitem action='New'/
menuitem action='Open'/
menuitem action='Save'/
menuitem action='SaveAs'/
separator/
menuitem action='Quit'/
/menu
menu action='EditMenu'
menuitem action='Cut'/
menuitem action='Copy'/
menuitem action='Paste'/
menuitem action='SelectAll'/
menuitem action='Find'/
separator/
menuitem action='Preferences'/
/menu
menu action='HelpMenu'
menuitem action='HelpContents'/
separator/
menuitem action='About'/
/menu
/menubar
/ui;
GtkUIManager *ui;
GtkActionGroup *actions;
GError *error = NULL;
actions = gtk_action_group_new (Actions);
gtk_action_group_add_actions (actions, entries, n_entries, NULL);
ui = gtk_ui_manager_new ();
gtk_ui_manager_insert_action_group (ui, actions, 0);
gtk_window_add_accel_group (GTK_WINDOW (window),
gtk_ui_manager_get_accel_group (ui));
if (!gtk_ui_manager_add_ui_from_string (ui, ui_info, -1, error))
{
g_message (building menus failed: %s, error-message);
g_error_free (error);
}
gtk_box_pack_start (GTK_BOX(mainbox), gtk_ui_manager_get_widget(ui,
/MenuBar), FALSE, FALSE, 0);
**
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Removing themes under win32
I have installed the Wimp theme for GTK on windows and well... I hate it. GIMP now crashes when I create a new image!!! How do I properly remove it and go back to the regular GTK+ look and feel? Cheers ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Gdk Pixbuf file saving
I am trying to create a simple photo resizing app and I can't get the
gdk_pixbuf_save() function to work.
I have gdk_pixbuf_scale_simple() working so I evidently have the gdk
Here is my code:
==
static void save_image()
{
GdkPixbuf *savepixbuf;
savepixbuf = gtk_image_get_pixbuf(GTK_IMAGE(img));
GError *error;
gdk_pixbuf_save(savepixbuf, filename, jpeg, error, quality, 100,
NULL);
}
GtkWidget *img;
img = gtk_image_new_from_file(somephoto.jpg);
==
Compiles fine but upon attempting to save the file the GError returns thus:
message: \x08\x7f\xfc
code: 6770465
domain: G_FILE_ERROR
I can't figure out what's causing the error, if it's my code or if it is
something OS related (using win32 and GTK+ 2.6).
Any help much appreciated,
-Nick
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GdkColor to Hexadecimal conversion
Easiest way to convert a GdkColor to its hexadecimal equivalent? ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Easiest way to get browser functionality embedded on win32?
I'm writing my first mildly useful GTK+ app so still learning and I'd like to embed a web browser in it. I don't need to handle any input or output except getting it to load a HTML/Javascript file and render it properly. What's the easiest way to do this in GTK+ for win32? Currently I'm looking at 'porting' GtkMozEmbed as described at http://www.niccolai.ws/read_blob.php?news_id=18 to use in my app, but if there's an easier way (eg. a way to embed an active X control in a GTK+ app) I'd really like to hear it. Cheers guys. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
