Thanks to pinotree and tsdgeos, this is now solved. For the record: my ui file 
had been converted with uic3, which was not enough to support KDE widgets. So 
adding the lines below to the ui file solved the problem:
  <customwidgets>
    <customwidget>
      <class>KNumInput</class>
      <extends>QWidget</extends>
      <header>knuminput.h</header>
      <container>0</container>
      <pixmap></pixmap>
    </customwidget>
    <customwidget>
      <class>KIntNumInput</class>
      <extends>KNumInput</extends>
      <header>knuminput.h</header>
      <container>0</container>
      <pixmap></pixmap>
    </customwidget>
  </customwidgets>

Regards,

Kleag
Le mercredi 13 septembre 2006 22:09, Kleag a écrit :
> Hello,
>
> In KGraphViewer, I have a KIntNumInput used in a ui file (Qt4 version
> converted from the Qt3 one by the trolltech conversion tool). When compiled
> by uic, it produces the include:
> #include <kintnuminput.h>
>
> where it seems that this class is now defined in knuminput.h .
>
> So, where is the association between KDE class names and headers defined ?
> Is there a bug here ?
>
> Regards,
>
> Kleag

-- 
KsirK - a turn-based strategy game for KDE
http://gna.org/projects/ksirk

KGraphViewer - a GraphViz dot graphs viewer
http://extragear.kde.org/apps/kgraphviewer
 
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