Hello and thanks for the answers for both Daniel and Paul.

I chose to use the signal blocking/unblocking method.
I now add a new data attribute "value-changed-signal" to the spin button. The data value contains the signal handler id which I can later read and use. The code looks like this:

        adj = gtk.Adjustment(orig_width, 1, orig_width, 1, 50, 0)
        self.width_spin = gtk.SpinButton(adj, climb_rate=0.0, digits=0)
        self.width_spin.show()
        self.width_spin.set_numeric(True)

        # Save the signal handler to "value-changed-signal" attribute.
        self.width_spin.set_data("value-changed-signal", self.width_spin.connect("value-changed", self.image_size_changed_callback, None))


and later in...

def some_function()
     # Block signals
     self.width_spin.handler_block(self.width_spin.get_data("value-changed-signal"))
     self.width_spin.set_value(some_value)
     # Unblock signals
     self.width_spin.handler_unblock(self.width_spin.get_data("value-changed-signal"))

Ok, thanks for now
Osmo Antero

Daniel Hernández Bahr wrote:

p { margin: 0; }body { font-family: 'Verdana'; font-size: 10pt; color: #000000}I guess you can always do:
self.width_spin.freeze_child_notify()
self.width_spin.set_value(some_value)
self.width_spin.thaw_child_notify()

cheers
----- Original Message -----
From: "Osmo Maatta" <osmoma <at> gmail.com>
To: pygtk <at> daa.com.au
Sent: Friday, November 21, 2008 2:52:53 PM (GMT-0500) Auto-Detected
Subject: [pygtk] Setting value of gtk.SpinButton without triggering the "value-changed" event.

Hello,

I need to change the self.width_spin (gtk.SpinButton) value, but in some cases I do not want the changed event to fire. How do I set the value?  This is my code:

        adj = gtk.Adjustment(orig_width, 1, orig_width, 1, 50, 0)
        self.width_spin = gtk.SpinButton(adj, climb_rate=0.0, digits=0)
        self.width_spin.show()
        self.width_spin.set_numeric(True)
        self.width_spin.connect("value-changed", self.image_size_changed_callback, "width")
        hbox1.pack_start(self.width_spin, False, False, 0)

This call will trigger the "value-changed" event so I want to avoid it.
    self.width_spin.set_value(some_value)

gtk.SpinButton is derived from gtk.Entry, so if I could grab the entry field from gtk.SpinButton so it may be possible to write:
entry.set_data("value", some_value)

Do you know how to do this right?

Am writing a filter/resize/and scale plugin in Python for my screendump program http://bildr.no/view/291282. Screendump is written in GTK and c.

TIA
  Osmo Antero (moma)
  Oslo

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--

Daniel Hernández Bahr
Universidad de las Ciencias Informáticas.

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