gtk: Fixed enabling/disabling sample control buttons

diff --git a/devselect.c b/devselect.c
index 3b842eaf76642277767a634b11d5add4529e0d44..7ed45e4a884f8bed2be9372ab3da05dd7fc0ad2c 100644 (file)
--- a/devselect.c
+++ b/devselect.c
@@ -24,6 +24,7 @@
 static void dev_selected(GtkComboBox *devbox, GObject *parent)
 {
        GtkTreeModel *devlist = gtk_combo_box_get_model(devbox);
+       GtkEntry *timesamples = g_object_get_data(parent, "timesamples");
        GtkComboBox *timeunit = g_object_get_data(parent, "timeunit");
        GtkTreeIter iter;
        const gchar *name;
@@ -47,11 +48,15 @@ static void dev_selected(GtkComboBox *devbox, GObject *parent)
        }
        g_object_set_data(parent, "dev", dev);
 
-       /* Update timeunit depending on device capabilities. */
-       if (sr_driver_hwcap_exists(dev->driver, SR_HWCAP_LIMIT_SAMPLES))
-               gtk_combo_box_set_active(timeunit, 0);
-       else
-               gtk_combo_box_set_active(timeunit, 1);
+       /*
+        * Grey out the time unless the device is valid,
+        * and it supports sample limiting
+        */
+       const gboolean limit_samples = dev &&
+               sr_driver_hwcap_exists(dev->driver,
+               SR_HWCAP_LIMIT_SAMPLES);
+       gtk_widget_set_sensitive((GtkWidget*)timesamples, limit_samples);
+       gtk_widget_set_sensitive((GtkWidget*)timeunit, limit_samples);
 }
 
 static void dev_menuitem_toggled(GtkMenuItem *item, GtkComboBox *combo)