一、模糊搜索界面由QLineEdit、QCombox组合实现，原始界面如下图所示
二、实现效果如下图所示
三、示例代码
① .h文件
1 #ifndef MAINWINDOW_H 2 #define MAINWINDOW_H
3
4 #include <QMainWindow>
5
6 namespace Ui { 7 class MainWindow; 8 } 9
10 class MainWindow : public QMainWindow 11 { 12 Q_OBJECT 13
14 public: 15 explicit MainWindow(QWidget *parent = nullptr); 16 ~MainWindow(); 17
18 void FuzzySearch(); 19
20 private: 21 Ui::MainWindow *ui; 22 }; 23
24 #endif // MAINWINDOW_H
② cpp文件
1 #include "MainWindow.h"
2 #include "ui_MainWindow.h"
3 #include <QCompleter>
4 #include <QListView>
5
6 MainWindow::MainWindow(QWidget *parent) : 7 QMainWindow(parent), 8 ui(new Ui::MainWindow) 9 { 10 ui->setupUi(this); 11 FuzzySearch(); 12 } 13
14 MainWindow::~MainWindow() 15 { 16 delete ui; 17 } 18
19 void MainWindow::FuzzySearch() 20 { 21 QStringList wordList; 22 wordList << "alpha" << "omega" << "omicron" << "zeta"; 23 ui->comboBox->addItems(wordList); 24
25 ui->comboBox->setView(new QListView()); 26 ui->comboBox->setEditable(true); 27 ui->comboBox->setLineEdit(ui->lineEdit); 28 ui->comboBox->setMaxVisibleItems(5);//下拉列表显示item数 29
30 // QString arrowImagePath = ":/res/combox.png"; 31 // ui->comboBox->setStyleSheet("QComboBox {font-family: \"Arial\"; font-size: 13px; padding: 3px 0x 3px 5px;}" 32 // "QComboBox::drop-down {subcontrol-origin: padding; subcontrol-position: top right; width: 30 px; border: 0px;}" 33 // "QComboBox::down-arrow {image: url("+ arrowImagePath +");}");
34
35 ui->comboBox->view()->setStyleSheet("QListView {font-family: \"Arial\"; font-size: 13px; outline: 0px;}"
36 "QListView::item {padding: 3px 0x 3px 5px; border-width: 0px;}"
37 "QListView::item:selected {background-color: rgb(74, 144, 226);}"); 38
39 QCompleter *pCompleter = new QCompleter(wordList, this); 40 ui->lineEdit->setCompleter(pCompleter); 41 pCompleter->setCaseSensitivity(Qt::CaseInsensitive); 42 ui->comboBox->setCompleter(pCompleter); 43
44 ui->lineEdit->clear(); 45 }