[Qt-interest] Multiple signals to one slot

[Andreas Pakulat]

On 30.01.10 20:09:41, Neville Dastur wrote:
> Hi
> 
> I have a group of checkboxes. Using the QSignalMapper I "connect" all of 
> them to a single member function
> 
> connect(ui->checkBoxDescriptionStatus_Current,
>     SIGNAL(stateChanged(int)),
>     m_signalMapperDescriptionFilters,
>     SLOT(map()));
> connect(ui->checkBoxDescriptionStatus_Retired,
>     SIGNAL(stateChanged(int)),
>     m_signalMapperDescriptionFilters,
>     SLOT(map()));
> 
> etc ...
> 
> I use the setMapper to specify a int for each checkbox
> 
> m_signalMapperDescriptionFilters->setMapping(ui->checkBoxDescriptionStatus_Current,
>     NBD::ND_SNOMED_DESCRIPTIONSTATUS_Current);
> m_signalMapperDescriptionFilters->setMapping(ui->checkBoxDescriptionStatus_Retired, 
> 
>     NBD::ND_SNOMED_DESCRIPTIONSTATUS_Retired);
> 
> and finally connect the whole thing together with:
> connect(m_signalMapperDescriptionFilters,
>     SIGNAL(mapped(int)),
>     this,
>     SLOT(map_DescriptionStatusFilterChange(int)));
> 
> My problem now is how do a get the actual state of the checkbox that 
> fired the signal?

Either store a map of int->QCheckBox, or use the QWidget* version of
setMapping to transport the checkbox, then you can simply cast it in the
slot.

Andreas

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