QComboBox and item

[drow]

Hi,
I have a question:
I have 3 item in a combo: red, green, blue.
I want to remove "blue" but I don't have any index

Hou can I remove a item in QComboBox withuot use index?

bye!

[Bojan]

I don't know the specifics of your situation, but I guess you could clear the combobox, and then re-insert all the items except the "blue" one. But this isn't as nice as if you had the index.

Bojan

[jpn]

I have 3 item in a combo: red, green, blue.

Do you mean items named "red", "green" and "blue"?

Why don't you just search for it?

// iterate through the items and find the one to be removed
for (int = 0; i < combo->count(); ++i) {
    if (combo->text(i) == "blue") {
        combo->removeItem(i);
        break;
    }
}
 
// OR make use of QComboBox::setCurrentText()
combo->setCurrentText("blue");
combo->removeItem(combo->currentItem());

// iterate through the items and find the one to be removed
for (int = 0; i < combo->count(); ++i) {
    if (combo->text(i) == "blue") {
        combo->removeItem(i);
        break;
    }
}

// OR make use of QComboBox::setCurrentText()
combo->setCurrentText("blue");
combo->removeItem(combo->currentItem());

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[drow]

I don't know the specifics of your situation, but I guess you could clear the combobox, and then re-insert all the items except the "blue" one. But this isn't as nice as if you had the index.

Bojan

I mast remove more item ( 100 - 800 item ) and this solution isn't efficent

// OR make use of QComboBox::setCurrentText()
combo->setCurrentText("blue");
combo->removeItem(combo->currentItem());

I'll try this solution

thk's all

drow

[wysota]

If you have this many items, it'll be best if you store indices of all items, for example in a QHash or something like that (but you have to use the model approach with persistant indices for that).