WxWidgets wxSingleChoiceDialog

This dialog shows a list of choices, plus OK and (optionally) Cancel. The user can select one of them. The selection can be obtained from the dialog as an index, a string or client data.

if (dialog.ShowModal() == wxID_OK)
{
    ...
}

ShowModal()

Shows the dialog, returning either wxID_OK or wxID_CANCEL.

GetStringSelection()

Returns the selected string.