[Paraview] Custom Qt Filter Panel

[clinton at elemtech.com]

You can call isValid() at the beginning of the constructor to verify your UI 
file loaded correctly.  If not, you're most likely missing the prefix path to 
it so it matches what you put in your .qrc file.

Or the ui file you created doesn't have a pqDoubleRangeWidget or it isn't 
named "ThresholdBetween_0".

Clint

On Monday 05 November 2007 11:10:24 am Robert Maynard wrote:
> I am trying to make a custom UI panel based on the current Threshold panel.
> So far I created the UI file and copied and modified the pq files for the
> UI.
>
> The problem is I get this error when loading the filter:
>
> QObject::connect: Cannot connect (null)::valueChanged(double) to
> SumBillboardPanel::upperChanged(double)
> QObject::connect: Cannot connect (null)::valueChanged(double) to
> SumBillboardPanel::lowerChanged(double)
>
>
> Which references this section of my file:
>
> pqSumBillboardPanel::pqSumBillboardPanel(pqProxy* pxy, QWidget* p) :
>   pqLoadedFormObjectPanel("SumBillboard.ui", pxy, p)
> {
>   this->Lower =
> this->findChild<pqDoubleRangeWidget*>("ThresholdBetween_0"); this->Upper =
> this->findChild<pqDoubleRangeWidget*>("ThresholdBetween_1");
>
>    QObject::connect(this->Lower, SIGNAL(valueChanged(double)),
>                     this, SLOT(lowerChanged(double)));
>    QObject::connect(this->Upper, SIGNAL(valueChanged(double)),
>                     this, SLOT(upperChanged(double)));
>
>   this->linkServerManagerProperties();
> }
>
> Now I think the problem is that the UI file isn't being loaded properly,
> but I have no clue why as everything is in the same directory and named
> correctly. Does anybody have any tips on getting this to work?