how to increase dropdown rectangle of ComboBox

[Yunus]

I have a combobox item of Qml.

I want to increase the width of drop down rectangle(white area) but I want to keep header rectangle in the same size. Is there a way to do that ?

[lemons]

sure, simply adjust the related parts of the combobox:
https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customizing-combobox

ComboBox {
    // [...]
    popup: Popup {
        // [...]
        implicitWidth: 222
        // [...]
    }
}

[Yunus]

yeah Ihave also solved by simply the code:

comboBox.popup.width = 200