GtkTreeView issues (porting from GtkCList)
Hi everybody! Now I'm porting some project from Gtk+-1.2 to Gtk+-2.6 and have some questions on GtkTreeView (with GtkListStore as a model): 1) Rows in GtkTreeView are higher than in GtkCList because of the much free space between them. How can I make GtkTreeView more compact? 2) When pressing the left mouse button and moving the cursor vertically the selection in GtkCList follow the cursor. In GtkTreeView -- not. How can I obtain in GtkTreeView the same behavior as in GtkCList? Thanks in advance! Yury. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GnomeDateEdit
hi Could someone please tell me how to access the GtkEntry field in the GnomeDateEdit widget. Or it would be cooler if someone could tell me how to extract the date and time from time_t data type. Thanks Abhishek Samuel ___ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Distinguish between G_IO_ERR and G_IO_HUP
Hi, I'm trying to catch the returned error message of the unzip executable with GIOChannel. I use g_spawn_async_with_pipes and then I create a GIOChannel and then i call g_io_add_watch. I run unzip with an incomplete zip file so the have the unzip executable fails with an error message but the G_IO_ERR conditions is never met, while the G_IO_HUP is met when both the pipe ends and when the unzip returns an error; how can I distinguish the two conditions so to have my application emits an appropriate gtk_dialog with an error message when unzip fails to open the zip archive ? -- Colossus Cpsed, a Linux OpenGL 3D scene editor http://cpsed.sourceforge.net/ ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Distinguish between G_IO_ERR and G_IO_HUP
On Monday 30 May 2005 13:31, Colossus wrote: I'm trying to catch the returned error message of the unzip executable with GIOChannel. I use g_spawn_async_with_pipes and then I create a GIOChannel and then i call g_io_add_watch. I run unzip with an incomplete zip file so the unzip executable fails with an error message but the G_IO_ERR condition is never met, while the G_IO_HUP is met when both the pipe ends and when the unzip returns an error; how can I distinguish the two conditions so to have my application emits an appropriate gtk_dialog with an error message when unzip fails to open the zip archive ? The G_IO_ERR condition only occurs if there is an error on the pipe/iochannel. It has nothing to do with the child program being executed. To catch an error in your spawned unzip program, you'll need to: * pass the G_SPAWN_DO_NOT_REAP_CHILD flag to g_spawn_* * watch the child yourself via g_child_watch_add () When the child exits, the callback function you passed to g_child_watch_add() is called with the exit status of the child, which will tell you if the child exited with an error or not. On unix, you'll need the macros described in the waitpid manpage to interpret the exit code (e.g. if (WIFEXITED(status) WEXITSTATUS(status) == EXIT_SUCCESS) then it's a normal exit, otherwise there was an error or the program received a fatal signal). No idea how to interpret the exit code on win32. Alternatively, or in addition, you could just watch stderr for messages, and assume that an error has occured if unzip prints a message to stderr. Cheers -Tim ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GnomeDateEdit
On 05/30/2005 05:42:49 AM, abhi rocks wrote: hi Could someone please tell me how to access the GtkEntry field in the GnomeDateEdit widget. I believe you can't. Or it would be cooler if someone could tell me how to extract the date and time from time_t data type. g_date_set_time will initialize a GDate from GTime (= time_t). To get the time of day: gmtime_r or localtime_r? Peter ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
get parent
Hi, how can I get the parent of a widget? I'm using gtk 1.2. thanks Giovanni ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: get parent
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Giovanni Manenti [EMAIL PROTECTED] writes: Hi, how can I get the parent of a widget? I'm using gtk 1.2. Check gtk/gtkwidget.h (widget-parent). GTK+ 1.2 is well past it's use by date, though. Use gtk_widget_get_parent() in GTK+ 2.x. Regards, Roger - -- Roger Leigh Printing on GNU/Linux? http://gimp-print.sourceforge.net/ Debian GNU/Linuxhttp://www.debian.org/ GPG Public Key: 0x25BFB848. Please sign and encrypt your mail. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iD8DBQFCmyAJVcFcaSW/uEgRAkpiAKCkkvgPeV8K+ya5bmdpPBGPnBA+wQCg3Mz1 /h8sBGiyAcS5A1rk4oSfBGI= =OlT1 -END PGP SIGNATURE- ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
State changing of Toggle Buttons
Hi, I was wondering if it is possible to set a Toggle Button's state to something else when you are inside another Toogle Button's callback. I know there is the gtk_toggle_button_set_active method but that requires you to have the GtkToggleButton. Is there another method that only uses the Widget to change its state? Or is there an easy way of accessing the GtkToggleButton from the Widget? Thanks in advance Michal ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Arguments in GObject-based object constructor
Lets say I've written an abstract class Foo (a class that is not
supposed to be instantiated), and a
class that inherits from Foo called Bar, which is instantiable. Foo
takes 2 constructor arguments/properties
x and y. Bar:s constructor takes the samt arguments. In order to
initialize some of Bar:s attributes,
it needs to know both x and y. In the bar_init() function I can't
get the x and y properties,
because they arent set yet, so where do I initialize the attributes?
Should I hook into the get/set property of
both x and y, and once both are set (check with some boolean
variables), I can initialize them in bar_set_property() ?
That way sounds a little too complicated so I think I'm missing something.
The GObject documentation states:
static void
maman_bar_init (GTypeInstance *instance,
gpointer g_class)
{
MamanBar *self = (MamanBar *)instance;
self-private = g_new0 (MamanBarPrivate, 1);
/* initialize all public and private members to reasonable default values. */
/* If you need specific consruction properties to complete initialization,
* delay initialization completion until the property is set.
*/
}
What does it mean by delay initialization completion until the property
is set ?
Regards Jacob Kroon
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Re: State changing of Toggle Buttons
On 05/30/2005 04:44:00 PM, Michal Porzuczek wrote: Hi, I was wondering if it is possible to set a Toggle Button's state to something else when you are inside another Toogle Button's callback. I know there is the gtk_toggle_button_set_active method but that requires you to have the GtkToggleButton. Is there another method that only uses the Widget to change its state? Or is there an easy way of accessing the GtkToggleButton from the Widget? GTK_TOGGLE_BUTTON(widget) ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Arguments in GObject-based object constructor
Jacob Kroon wrote: [...] What does it mean by delay initialization completion until the property is set ? You can override the constructor in your class_init function see: le-hacker.org/papers/gobject/ and read about the constructor, it is important that you chain up to the real gobject constructor in your constructor, after the real constructor returns, your my_instance_init() function will have been called and all construct properties will have been applied. Cheers, -Tristan ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Arguments in GObject-based object constructor
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Jacob Kroon [EMAIL PROTECTED] writes: Lets say I've written an abstract class Foo (a class that is not supposed to be instantiated), and a class that inherits from Foo called Bar, which is instantiable. Foo takes 2 constructor arguments/properties x and y. Bar:s constructor takes the samt arguments. In order to initialize some of Bar:s attributes, it needs to know both x and y. In the bar_init() function I can't get the x and y properties, because they arent set yet, so where do I initialize the attributes? Object properties are set after construction has finished. That is, after the contructors and init functions have been called. You need to override the get_property and set_property vfuncs of GObjectClass, and install properties of type G_PARAM_CONSTRUCT. As an example, have a look at http://arch.debian.org/cgi-bin/archzoom.cgi/[EMAIL PROTECTED]/uterm--mainline--0.1--patch-41/cse/cse-selection.h?template=plain http://arch.debian.org/cgi-bin/archzoom.cgi/[EMAIL PROTECTED]/uterm--mainline--0.1--patch-41/cse/cse-selection.c?template=plain This is a type derived from GObject. Here's an example for a type derived from GtkWidget (hrm, just spotted a bug!): http://arch.debian.org/cgi-bin/archzoom.cgi/[EMAIL PROTECTED]/uterm--mainline--0.1--patch-41/cse/cse-canvas.h?template=plain http://arch.debian.org/cgi-bin/archzoom.cgi/[EMAIL PROTECTED]/uterm--mainline--0.1--patch-41/cse/cse-canvas.c?template=plain Should I hook into the get/set property of both x and y, and once both are set (check with some boolean variables), I can initialize them in bar_set_property() ? That way sounds a little too complicated so I think I'm missing something. If x and y are properties of the parent Bar class, simply call g_object_new() with the properties to set. You don't need to do anything more, since it will handle setting the properties for you. Regards, Roger - -- Roger Leigh Printing on GNU/Linux? http://gimp-print.sourceforge.net/ Debian GNU/Linuxhttp://www.debian.org/ GPG Public Key: 0x25BFB848. Please sign and encrypt your mail. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 http://mailcrypt.sourceforge.net/ iD8DBQFCm5EwVcFcaSW/uEgRArahAKCl+DyuixROOQQJmae/5mP5Wc8fzwCbBYm5 Ow8w5Mjsn8qcsHqnp6MZWWw= =jCfR -END PGP SIGNATURE- ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
simple example of using gdk_pixbuf_new_from_file
-- Forwarded message -- From: Raghavendra [EMAIL PROTECTED] Date: May 25, 2005 9:59 AM Subject: Re: simple example of using gdk_pixbuf_new_from_file To: Muthiah Annamalai [EMAIL PROTECTED] Cc: gtk-app-devel-list@gnome.org i sucessfully loaded a image using pixbufs. thanks to Mr.Muthiah. but now i face the difiiculty of loading multiple images in a window and those images are transparent one. so each must be visible. Any suggestions? Please anyone help me out! Thanks Vishnu ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
RE: simple example of using gdk_pixbuf_new_from_file
I sucessfully loaded a image using pixbufs, but now i face the difiiculty of loading multiple images in a window and those images are transparent one. so each must be visible. You mean all overlapping each other? You can only display a single flat image (animations not counted). So if they're one ontop of another, you need to composit them together into a single image. The preferred monster, is; void gdk_draw_pixbuf (GdkDrawable *drawable, GdkGC *gc, GdkPixbuf *pixbuf, gint src_x, gint src_y, gint dest_x, gint dest_y, gint width, gint height, GdkRgbDither dither, gint x_dither, gint y_dither); ... or, if you don't mind using depreciated functions ... void gdk_pixbuf_render_to_drawable_alpha (GdkPixbuf *pixbuf, GdkDrawable *drawable, int src_x, int src_y, int dest_x, int dest_y, int width, int height, GdkPixbufAlphaMode alpha_mode, int alpha_threshold, GdkRgbDither dither, int x_dither, int y_dither); (I didn't actually know the latter had been depreciated... Seems they've ditched the alpha_mode and alpha_threshold, and added a gc instead.) That's basically your main tool. Composit them all together, probably into a new image of the appropriate size (unless you don't mind trashing the one at the bottom of the heap) and stick the result into a GtkImage or equivelant. Fredderic ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
gtk clist append
hi; i have a pbm, using fileslection widget i am selecting the file and i would like to append the same to the clist_widget. create_window_new2 is the window name, clist_sst_file_sel is the name of the clist. sst_file_sel = create_window_new2 (); clist_file_sel = lookup_widget (sst_file_sel, clist_file_sel); data[0] = Hello; data[1] = World; gtk_clist_append (GTK_CLIST (clist_file_sel), data); data[0] = Second; data[1] = Row; gtk_clist_append (GTK_CLIST (clist_file_sel), data); message = (gchararray *) gtk_file_selection_get_filename (GTK_FILE_SELECTION (fs)); op = (GtkFileSelection *)gtk_file_selection_get_filename (GTK_FILE_SELECTION (fs)); g_print (%s\n, op); - //gtk_widget_show (sst_file_sel); now using this i am trying to append the text to the clist widget. the appended text is visible only when if i gave the gtk_widget_show (sst_file_sel); but using this another window is popping up. i need in the same window it has to be appended. how can i get this; thanks; vasu. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Glade C code a bad thing? (was: root windows)
Maciej Katafiasz wrote: Unless by build of glade you mean autogenerated C code, which is bad, bad, bad thing to use. Use libglade, really. why it is bad? I use it and it works just fine and I don't have glade dependiencies. Because it makes it impossible to later rework UI without rewriting the code. In general, mixing autogenerated and hand-written code is always a bad idea, and that's exactly what is being done here. Besides, it hardcodes interface in code, which is also very bad thing. Fortunately, glade-3 won't support generating C, making it painfully obvious that libglade is the right thing. Do all conceptual decisions by all developers make painfully obvious that they are / were doing the right thing? If Glade 4 were to add support for QT or MS-Windows resources or other nonsense, would it still be painfully obviously the right thing? Possibly contrary to you I've been using both ways, libglade and hardcoded C source. After quite some time of performance drawbacks and other quirks I returned to Glade C code and am very happy with it. I'm co-working on a rather large Glade-based project, btw, with the .glade file being 1 MB in size. For performance reasons, such files are inherently unsuitable for being accessed via libglade. In contrast, we have never experienced any impossibilities of reworking UIs. There is no more Glade-related code to rewrite (just custom handler code) when using Glade C code than when using libglade. I also don't see why mixing auto-generated code with hand-written code is always a bad idea or hardcoded interface is also very bad thing? Imagine that a hardcoded interface is actually exactly what some people (developers and users) WANT to have, for several reasons! (Speed, size, GUI can't be altered by unauthorized people, installations, easier to program, etc.) See URL below for an extended discussion of why Glade generated C code is actually preferrable, why its ceasing support is regrettable and will certainly cause quite some professional developers to stick to Glade 2. http://mail.gnome.org/archives/gtk-app-devel-list/2005-January/msg00227.html ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
