Combobox Signals

[b1]

G'Day All,

I am fairly new to QT. I am using QT4.1.1 and I am having a problem with combobox signals.

I have created a widget with a multiple lineedits and comboboxes. The comboboxes are prefilled by a function that calls data from a database. This part works fine. When I click on the combobox I can select any of the line items that have been entered.
I have created a signal/slot to run a function that fills the remainder of the widgets based on the combobox selection.
However, when I press tab, enter or click another lineedit/combobox, the highlighted item remians displayed, the focus moves, but the function does not get run. It appears the signal is not emmited. I have tried each of the following to avail.

connect( comboBox_3, SIGNAL( currentIndexChanged() ), this, SLOT( readSData() ) );
connect( comboBox_3, SIGNAL( highlighted() ), this, SLOT( readSData() ) );
connect( comboBox_3, SIGNAL( returnPressed() ), this, SLOT( readSData() ) );


The "readSData()" is declared as a slot and runs if called manually.

The signal/slots used for the "lineedits" and "pushbuttons" all work correctly. It is only the "comboboxes" that don't work.

Any thoughts or suggestions would be appreciated.

Regards, rod

[munna]

It should be

connect( comboBox_3, SIGNAL( currentIndexChanged(int) ), this, SLOT( readSData() ) );
connect( comboBox_3, SIGNAL( highlighted(int) ), this, SLOT( readSData() ) );

connect( comboBox_3, SIGNAL( currentIndexChanged(int) ), this, SLOT( readSData() ) );
connect( comboBox_3, SIGNAL( highlighted(int) ), this, SLOT( readSData() ) );

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There is no signal called returnPressed that is emitted by QComboBox.

[jpn]

There is no signal called returnPressed that is emitted by QComboBox.

You may, however, connect to combo box's internal line edit:

connect( comboBox_3->lineEdit(), SIGNAL( returnPressed() ), this, SLOT( readSData() ) );

connect( comboBox_3->lineEdit(), SIGNAL( returnPressed() ), this, SLOT( readSData() ) );

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[sumsin]

Have you defined th Q_OBJECT macro in your header file.