Well, I hope this isn't a show stopper. I need XInitThreads() to be
able to fire off a separate video (v4l) object to monitor video input.
But when I put it in my GTk application, it freezes up any time I try to
enter text into a text box.
I'm also using g_threads_init and gdk_threads_enter ..
Hello,
I'm using the simple method for the GtkItemFactory. Namely:
GtkItemFactoryEntry menu_items[] = {
{ "/_File", NULL, NULL, 0, "" },
{ "/File/_Open","O", open_file, 0, NULL },
and so on. But I don't see how I can place a data pointer into this
structure as I c
I'd like to have a vertical line scroll from Left to Right on a
gtk_curve. I can probably figure out how to do the movement, but
I don't see exactly how to draw the line.
Thanks,
DT
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Hi folks,
I'm trying to set up text entry boxes that are empty. Unfortunately,
when I create one as such, I get the following error:
Gtk-CRITICAL **: file gtkentry.c: line 398 (gtk_entry_set_text):
assertion `text != NULL' failed.
It's not a show stopper, but I'd rather avoid it.
Isn't there
Hi folks,
Ok, this works. It doesn't solve problems with using the GUI event
scheulder, but I'll take it for now. Basically, I have my function
return FALSE, which terminates the current "timer." But before doing
that, I have it set a timer with the current interval value. Makes nice
smooth t
Paul Davis wrote:
> yes, this makes sense, but its still a bad practice to use the GUI
> event loop to deliver precisely timed events. you'd be much better off
> using sigitimer(), although alas the obvious method is to use
> sigitimer and threads, and thats a problematic area (pthreads + POSIX
>
Hi folks,
Well, at least I know what's possible. The problem I'm having isn't
because of GUI latency or anything like that. It's due to the nature of
gtk_timeout_add() and gtk_timeout_remove(). It's a different paradigm.
If I have a timeout pulsing every 0.3 seconds, then change that to
somet
Havoc Pennington wrote:
> There isn't a way to change it, other than add/remove. The add/remove
> should work fine though, it's only a couple more lines of code to
> type.
It does "work" just not smoothly. Basically, I'm working on a simple audio
app. where I use gtk_timeout_add() to trigger a
Is there something like this? I tried but don't see it. It would come
in a lot more handy than having to remove the timeout, then set it
again. A good example is a timer linked to a slider. The timer doesn't
get updated until the slider motion stops.
Imagine an app that simply had a flashing
Sorry folks. I didn't notice clist_moveto. Works great. Bravi.
DT
--
Technical Director - Virginia Center for Computer Music
http://www.virginia.edu/music/vccm.html
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I'm trying to automatically scroll down a CList. Simply moving the
selection with:
gtk_clist_select_row()
doesn't do it. I've also tried linking with:
gtk_scrolled_window_set_vadjustment()
but have had no luck. Is it possible? Are there some examples?
What would be great is if I
Hey Havoc,
I tried the gtk_grab_focus and still no dice. It really *should* work.
The object in question is actually a large gtk_box, with a row of
frames, inside each of which is a gtk_entry.
Just doesn't work ...
DT
--
Technical Director - Virginia Center for Computer Music
http://www.virgin
I've got a chain of gtk_entrys that I want to advance between when I hit
tab. I've almost got it working, but all the following does is select
text ... it does not allow me to edit. I have to manually click the
mouse.
?
void cb_move_next (GtkWidget *text, GdkEventKey *event, signal_object
*s_o
I've said it before, and I'll say it again. This list rocks! So do all
like it, and all things remotely resembling it. The net ... in its
best, truest, most noble, free, open, ass kicking, bug crunching form!
Specifically, I have to thank Havoc and Owen for some recent (good)
advice. Their in
sumith chitanand wrote:
> 1.i have the mouse pointer position. how do I draw a widget at this position or how
>can I insert text at that point?
You need to look into the Gnome or Gtk Canvas. The latter is a "hack" of the former
which I actually have had better
luck with.
It gets a bit compli
Hey folks,
Since I've been getting so much from this list I thought I'd try and
give back. My observations on signal_connect have been:
1. It doesn't like large pointers. I've had trouble passing in (double
*) from time to time.
2. It is very sensitive to typecasting. Make sure you've got
So I just took out my gtk_widget_destroy() of the dialog window when
"ok" is pressed.
Things seem to work fine until I actually hit "cancel" which deletes the
window. Then the malloc hooks kick in. I get an additional message of
an invalid pointer to free() when setting MALLOC_CHECK_=3. But th
Owen Taylor wrote:
> When set, GNU libc writes some extra information around memory blocks and
> checks it on free() so that it can detect double frees and some other forms of
> memory corruption.
>
> Now, this might be coincidental memory corruption elsewhere in
> your app (in which case you mig
Owen Taylor wrote:
> Segfault in free == memory corruption somewhere else in
> your app. It's most likely a double free - to catch that
> on Linux, try:
>
> $ gdb myprog
> (gdb) set env MALLOC_CHECK_=2
> (gdb) r
Hey, thanks a bunch. That seems useful. I at least get a halt right away,
but n
Hi folks,
I seem to be getting strange crashes in my app, back tracing shows a
long list of gtk function calls ... which do not help me debug. Here's
a brief snippet:
#0 0x40318c00 in free () from /lib/libc.so.6
#1 0x40318a9b in free () from /lib/libc.so.6
#2 0x40174855 in g_free (mem=0x809a
Havoc Pennington wrote:
> They're in pixels. However widget->allocation is only filled in when
> the widget actually goes through the request/allocate process, it
> isn't magically kept up-to-date at all times.
It would seem to make sense to have this happen when gtk_widget_show() is
called, no?
Hi folks,
I'm trying to get size data on widgets to pass along to canvas
routines. But when I print out GtkWidget->allocation.width, etc ...
I get numbers like 0 and 1 only.
What units are these? Or is this broken in GTK 1.2.8?
DT
--
Technical Director - Virginia Center for Computer Music
htt
Hi folks,
I'm creating a small window that takes in parameters for the creation of
objects on the fly. So I'm using a bunch of gtk_entrys to grab those
settings. But I seem unable to control the actual (physical) width of
these entries. Using gtk_entry_max_length() has no effect on that.
I *g
Hi all,
I've gotten some feedback on this, but still need help. From what
I gather, signals are specific to types. So a gtk adjustment, for
example, has two signals associated with it: "changed" and "value
changed". Fine.
I've been looking for another kind of signal, perhaps rarely used, or
Havoc Pennington wrote:
> "David J. Topper" <[EMAIL PROTECTED]> writes:
> >
> > I mean a window, they are GtkWindows, not popups. I'm using them to get
> > parameters for items created on the fly (eg., length, width, height) and
> > I don't w
Jeroen Benckhuijsen wrote:
>
> I don't think you want GdkEvents. Most (or all) of them are translations
> of X Window Events, like an event to redraw a window, resize it, move a
> mouse, etc, etc.
You're correct. Signals are what I really want. But I'm unable to find
a list on the Gnome pages.
Havoc Pennington wrote:
>
> "David J. Topper" <[EMAIL PROTECTED]> writes:
> >
> > Is there a way for me to force a window to remain in focus? I've got
> > some popup windows on a canvas, that of course drop to back when focus
> > moves off
Hi folks,
I'm having some trouble sending events around CanvasItems and
GtkAdjustments. I'm thinking I need to create a new event type,
something like "activate" or "trigger_my_event." But the functions
listed to do that seem a bit heavy for my used (eg., # of bytes for
function() pointer?).
W
Hi folks,
Is there a way for me to force a window to remain in focus? I've got
some popup windows on a canvas, that of course drop to back when focus
moves off them. I'm looking for an easy way to force them to remain on
top.
Thanks,
Dave Topper
--
Technical Director - Virginia Center for Com
I'm packing widgets into GnomeCanvasItems ... but need a nice way to get
the underlying widget's size so that the parent GnomeCanvasItem can be
drawn accordingly.
Primary example is a slider (range widget) with an adjacent scale. If I
draw the GnomeCanvasItem to small, I won't get all my scale i
Hi folks,
Can anyone explain arg 2?
gtk_item_factory_new (GtkType container_type,
const gchar *path,
GtkAccelGroup *accel_group);
What is the "path" all about? The examples / docs reference but
that has l
Hi folks,
Let's say I want a menu to pop up at current mouse x/y cordinates when
I press mouse button 3. I see an easy way to do it with the older
gtk_menu() functions and whatnot. But they seem to fall sort on a
couple of areas:
1. Separators? Everything is a menu item?
2. How to make sub
Sylvain Trias wrote:
>
> Hi
> We are coding a chat program under linux and we use gtk and pthreads...
>
> When we run our soft, the window get updated only when the mouse is upper the window.
> We run 1 thread for gtk, 1 for the server and 1 by extra client.
Perhaps make sure both threads are i
Hi folks,
I notice that when you resize a Gtk or Gnome canvas, any regular
GtkWidget contained therein DOES NOT get moved or resized properly.
Instead, it remains in it's exact original location. This messes things
up majorly.
Anyone have a workaround? Like, is there a way to get the message b
Hi all,
Can someone point me to an example that illustrates how to change basic
widget colors? I mean things like boxes, range widget controls
(different colors for actually slider or button) and so on.
Similarly, how do I set the default background color for the gtk_canvas?
Thanks,
DT
--
Tec
Hi folks,
Does anyone know / or have a good example of how to move (drag w/ mouse)
widgets (eg., range widgets, buttons, boxes, etc ...) around a window?
I've tried using the gnome canvas, but it doesn't work properly (ie.,
event signals don't always make it to the widget).
Thanks,
Dave Topper
Hi folks,
I've been trying to find a nice way to pack widgets into a canvas, and
then move them around. I've hacked up some code from the gnome_canvas
example. It works for the most part. But I am limited to what seems
like the widget's original area ... as far as "dragging range" is
concerned
Hi all,
1. Are there gnome mailing lists? I didn't see any reference on
developer.gnome.org.
2. Are there some better examples than those on developer.gnome.org?
I'm parsing through the gnome-canvas example included with the library
... the arrowhead one to be specific.
Can someone fill me o
I'm NOT trying to spark a flame war here. Rather, I've been happily
using GTK for a while. Now it seems I need to extend things a bit with
GNOMEcanvas. I know there's also a GTKcanvas, but the consensus seems
to be "use GNOME."
So I've been checking out the GNOME pages, but unfortunately haven
Can I pack widgets into slots in a Clist? I'm just mucking with the
code from testgtk.c now and can't tell offhand if it would work.
Basically I'd like to be able to move sliders (range widgets) around the
window. Not necessarily with complete range of motion, but perhaps at
least in a fashion
Hi folks,
I've looked through the testgtk script and the examples. Unfortunately
I don't see what I'm looking for. Here's a brief description:
1. Insert little boxes, and be able to connect them like a graph
2. Be able to click on connections and cut/paste them
Even better:
1. Insert GTK
Vlad Harchev wrote:
> Could you post your stripped-down source (probably with main function) to
> help us helping you?
It's a bit hard to strip down but I'll try. The following compiles with:
gcc -g slider_stuff.c `gtk-config --cflags` `gtk-config --libs`
Just start moving the sliders and yo
Vlad Harchev wrote:
> Could you post your stripped-down source (probably with main function) to
> help us helping you?
A bit hard to strip down but I'll try.
> I addressed this about half a year ago without any problems.
A key issue for me is to be able to do non standard mappings. Regardle
Hi all,
I've been going nuts over this and can't believe there isn't a built in
mechanism in GTK to do it. Bascially, I'm trying to attach a numeric
scale onto a range widget. I've attached a (very small) gif. It
consists of a gtk table (the scale) that sits next to a range widget,
which lies
Hi all,
Getting back into GTK again. Trying to expand my little application
into different windows and such. I'm trying to create a "main" window
which, among other things, establishes a connection to a server
process. But once the user clicks on "connect" I want all the other
widgets (eg., te
Hi folks,
What's the difference between the gtk_signal_connect and
gtk_signal_conect_object (and related) functions? I recall an earlier
tutorial had early example with both. I can't find any info on the
difference.
Examples?
Thanks,
Dave Topper
--
Technical Director - Virginia Center for Co
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