blocks|key|320037|text|您可以为所有项目设置QVariant数据，然后可以在需要时获取该值。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|320038|下面是针对这种情况的示例代码：|320039|ui.comboBoxSheetSize->addItem("128+m",+QVariant(128));
ui.comboBoxSheetSize->addItem("256+m",+QVariant(256));
ui.comboBoxSheetSize->addItem("512+m",+QVariant(512));
ui.comboBoxSheetSize->addItem("1024+m",+QVariant(1024));

...

void+Page::onComboSheetSizeChanged(+int+index+)
{
+int+value+=+ui.comboBoxSheetSize->itemData(index).toInt();
}|code-block|syntax|javascript|320040|320041|顺便说一下，我想我误解了你的问题。我觉得你获取数据的方式够聪明了吧？|320042|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|R|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|M|$]]

you can set QVariant data for all items, then you can get the value when you need it.

there is an example code for this situation:

<pre><code>ui.comboBoxSheetSize-&gt;addItem("128 m", QVariant(128));
ui.comboBoxSheetSize-&gt;addItem("256 m", QVariant(256));
ui.comboBoxSheetSize-&gt;addItem("512 m", QVariant(512));
ui.comboBoxSheetSize-&gt;addItem("1024 m", QVariant(1024));

...

void Page::onComboSheetSizeChanged( int index )
{
 int value = ui.comboBoxSheetSize-&gt;itemData(index).toInt();
}
</code></pre>

<hr>

by the way, i think i misunderstood your question. i think the way you get data is smart enough?

blocks|key|3282181|text|如果您想要获取QComboBox的当前数据，似乎需要执行combobox->itemData(combobox->currentIndex())。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3282182|如果您使用的是从QComboBox派生的类，则可以添加currentData()函数。|3282183|entityMap^0|S|18|0|R|D|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

It seems you need to do <code>combobox-&gt;itemData(combobox-&gt;currentIndex())</code> if you want to get the current data of the QComboBox.

If you are using your own class derived from QComboBox, you can add a <code>currentData()</code> function.

blocks|key|3282194|text|我确认最简单的方法是这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3282195|uiAnalyseAssets::AnalyseAssets(QWidget+*parent)
:+QWidget(parent)
{
ui.comboBox->addItem("text1");
ui.comboBox->addItem("text2");

...
}

void+mainFunction::yourFunction(+int+index+)
{
+int+value+=+ui.comboBox->currentText();
}|code-block|syntax|javascript|3282196|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I confirm the easiest way is to do this:

<pre><code>uiAnalyseAssets::AnalyseAssets(QWidget *parent)
: QWidget(parent)
{
ui.comboBox-&gt;addItem("text1");
ui.comboBox-&gt;addItem("text2");

...
}

void mainFunction::yourFunction( int index )
{
 int value = ui.comboBox-&gt;currentText();
}
</code></pre>

blocks|key|3069141|text|这个可以获取当前索引的文本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3069142|QString+cb+=+cbChoice+->currentText();|code-block|syntax|javascript|3069143|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This one can get the text of current index:

<pre><code>QString cb = cbChoice -&gt;currentText();
</code></pre>

blocks|key|3069160|text|这是我在QT+4.7中的OK代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3069161|+//add+combobox+list+
++++QString+val;
+++ui->startPage->clear();
++++val+=+"http://www.work4blue.com";
++++ui->startPage->addItem(tr("Navigation+page"),QVariant::fromValue(val));
++++val+=+"https://www.google.com";
++++ui->startPage->addItem("www.google.com",QVariant::fromValue(val));
++++val+=+"www.twitter.com";
++++ui->startPage->addItem("www.twitter.com",QVariant::fromValue(val));
++++val+=+"https://www.youtube.com";
++++ui->startPage->addItem("www.youtube.com",QVariant::fromValue(val));

+++//+get+current+value
++++qDebug()+<<+"current+value"<<+
+++++++ui->startPage->itemData(ui->startPage->currentIndex()).toString();|code-block|syntax|javascript|3069162|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is my OK code in QT 4.7:

<pre><code> //add combobox list 
 QString val;
 ui-&gt;startPage-&gt;clear();
 val = "http://www.work4blue.com";
 ui-&gt;startPage-&gt;addItem(tr("Navigation page"),QVariant::fromValue(val));
 val = "https://www.google.com";
 ui-&gt;startPage-&gt;addItem("www.google.com",QVariant::fromValue(val));
 val = "www.twitter.com";
 ui-&gt;startPage-&gt;addItem("www.twitter.com",QVariant::fromValue(val));
 val = "https://www.youtube.com";
 ui-&gt;startPage-&gt;addItem("www.youtube.com",QVariant::fromValue(val));

 // get current value
 qDebug() &lt;&lt; "current value"&lt;&lt; 
 ui-&gt;startPage-&gt;itemData(ui-&gt;startPage-&gt;currentIndex()).toString();
</code></pre>

blocks|key|323013|text|我有个问题，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|323014|QString+str+=+m_UI->myComboBox->currentText();|code-block|syntax|javascript|323015|解决了这个问题。|323016|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had the issue and 

<pre><code>QString str = m_UI-&gt;myComboBox-&gt;currentText();
</code></pre>

solved this.

blocks|key|323018|text|成员函数QComboBox::currentData在提出此问题后已添加，请参阅此commit|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|323019|entityMap|0|LINK|mutability|MUTABLE|url|https://qt.gitorious.org/qt/tavestbos-qtbase/commit/cada1fb4ef04b64593156be1190884c314d7c041^0|15|6|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

The member function QComboBox::currentData has been added since this question was asked, see this <a href="https://qt.gitorious.org/qt/tavestbos-qtbase/commit/cada1fb4ef04b64593156be1190884c314d7c041">commit</a>

blocks|key|3282249|text|我也有同样的问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3282250|我已经解决了|3282251|value+=+self.comboBox.currentText()
print+value|code-block|syntax|javascript|3282252|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had same issue 

I have solved by 

<pre><code>value = self.comboBox.currentText()
print value
</code></pre>

blocks|key|3069253|text|我很惊讶，没有激活的信号，也有同样的问题。我通过创建QComboBox的子类解决了这个问题。我认为最好避免直接访问对象和调用它的函数，因为这意味着更紧密的耦合，这与Qt的哲学背道而驰。这是我制作的类，它适用于我自己。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3069254|class+SmartComboBox+:+public+QComboBox+{

++++Q_OBJECT

private+slots:

++++void+triggerVariantActivated(int+index);

public:

++++SmartComboBox(QWidget+*parent);

signals:

++++void+activated(const+QVariant+&);

};|code-block|syntax|javascript|3069255|和实现|3069256|void+SmartComboBox::triggerVariantActivated(int+index)
{
++++activated(itemData(index));
}

SmartComboBox::SmartComboBox(QWidget+*parent)
:QComboBox(parent)
{
++++connect(this,+SIGNAL(activated(int)),+this,+SLOT(triggerVariantActivated(int)));
}|3069257|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I'm astonished that there isn't an activated signal and have the same problem. I solved it by making a subclass of QComboBox. I think it's better to avoid having to directly access the object and call its functions because that means more tight coupling and goes against Qt's philosophy. So here's the class I made that works for me.

<pre><code>class SmartComboBox : public QComboBox {

 Q_OBJECT

private slots:

 void triggerVariantActivated(int index);

public:

 SmartComboBox(QWidget *parent);

signals:

 void activated(const QVariant &amp;);

};
</code></pre>

And the implementation

<pre><code>void SmartComboBox::triggerVariantActivated(int index)
{
 activated(itemData(index));
}

SmartComboBox::SmartComboBox(QWidget *parent)
:QComboBox(parent)
{
 connect(this, SIGNAL(activated(int)), this, SLOT(triggerVariantActivated(int)));
}
</code></pre>

blocks|key|321085|text|我知道我来晚了，但是对于那些仍然有这个问题的人来说，这个问题可以很容易地解决。我使用的是Qt+5.3，它工作得很好。不需要创建函数或所有这些。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|321086|int+valueComboBox;
valueComboBox+=+comboBox->currentIndex();|code-block|syntax|javascript|321087|而且它起作用了！希望它能帮上忙！|321088|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I know I'm very late but for those who still have that problem, it can be solved easily.
I use Qt 5.3 and it works fine. No need to create a function or all that.

<pre><code>int valueComboBox;
valueComboBox = comboBox-&gt;currentIndex();
</code></pre>

and it works ! 
Hope it helps !

blocks|key|3282337|text|如果您正在开发QGIS插件，那么只需|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3282338|self.dlg.cbo_load_net.currentIndex()|code-block|syntax|javascript|3282339|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

if you are developing QGIS plugins then simply 

<pre><code>self.dlg.cbo_load_net.currentIndex()
</code></pre>

blocks|key|321090|text|这是我做的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|321091|QDir+path("/home/user/");
QStringList+_dirs+=+path.entryList(QDir::Dirs);
std::cout+<<+"_dirs_count+=+"+<<+_dirs.count()+<<+std::endl;
ui->cmbbox->addItem(Files);
ui->cmbbox->show();|code-block|syntax|javascript|321092|您将看到，名为_dirs的QStringList的结构类似于一个数组，您可以通过索引访问其成员，直到_dirs.count()返回的值为止|321093|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I did this

<pre><code>QDir path("/home/user/");
QStringList _dirs = path.entryList(QDir::Dirs);
std::cout &lt;&lt; "_dirs_count = " &lt;&lt; _dirs.count() &lt;&lt; std::endl;
ui-&gt;cmbbox-&gt;addItem(Files);
ui-&gt;cmbbox-&gt;show();
</code></pre>

You will see with this that the QStringList named _dirs is structured like an array whose members you can access via an index up to the value returned by _dirs.count()

blocks|key|323070|text|这个问题很古老，但也许有人需要一个实际的答案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|323071|在QGIS3.4中，您可以使用currentData()方法从QComboBox获取值。|offset|length|style|CODE|323072|示例：comboBox.currentData()|323073|链接：https://doc.qt.io/qt-5/qcombobox.html#currentData-prop|323074|entityMap|0|LINK|mutability|MUTABLE|url|https://doc.qt.io/qt-5/qcombobox.html#currentData-prop^0|0|F|D|V|9|0|3|M|0|3|1I|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@$D|V|E|W|F|G]|$D|X|E|Y|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@$D|10|E|11|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|12|8|@]|9|@$D|13|E|14|1|15]]|A|$]]|$1|L|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

The question is old, but maybe, somebody need an actual answer. 

In the QGIS 3.4 you can get the value from the <code>QComboBox</code> with the method <code>currentData()</code>.

Example: <code>comboBox.currentData()</code>

Link: <a href="https://doc.qt.io/qt-5/qcombobox.html#currentData-prop" rel="nofollow noreferrer">https://doc.qt.io/qt-5/qcombobox.html#currentData-prop</a>

In Qt, I can get the <code>selected text</code> of a <code>QComboBox</code> by using the 
<code>combobox-&gt;currentText()</code> method.
How can I get the <code>selected value</code>?

I searched for help but I couldn't find a method <code>currentData()</code> which I expected to find. I could only find <code>combobox-&gt;currentIndex()</code>

Is there a smarter way to do it other than <code>combobox-&gt;itemData(combobox-&gt;currentIndex())</code>?

Update: This is no longer necessary as of Qt 5. A <code>currentData()</code> method has been added <a href="http://doc.qt.io/qt-5/qcombobox.html#currentData-prop" rel="noreferrer">http://doc.qt.io/qt-5/qcombobox.html#currentData-prop</a>

How can I get the selected VALUE out of a QCombobox?

在Qt中，我可以使用combobox->currentText()方法获取QComboBox的selected text。如何获取selected value我寻找帮助，但是我找不到我期望找到的方法currentData()。我只能找到combobox->currentIndex()有没有比combobox->item...

问如何从QCombobox中获取所选值？
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