彻底改版2.0

other/lineeditnext/lineeditnext.pro

@@ -0,0 +1,13 @@
+QT += core gui
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+greaterThan(QT_MAJOR_VERSION, 5): QT += core5compat
+
+TARGET      = lineeditnext
+TEMPLATE    = app
+DESTDIR     = $$PWD/../bin
+CONFIG      += warn_off
+
+SOURCES     += main.cpp
+SOURCES     += widget.cpp
+HEADERS     += widget.h
+FORMS       += widget.ui

other/lineeditnext/main.cpp

@@ -0,0 +1,11 @@
+#include "widget.h"
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    Widget w;
+    w.show();
+
+    return a.exec();
+}

other/lineeditnext/widget.cpp

@@ -0,0 +1,30 @@
+#include "widget.h"
+#include "ui_widget.h"
+#include "qlineedit.h"
+
+Widget::Widget(QWidget *parent) :
+    QWidget(parent),
+    ui(new Ui::Widget)
+{
+    ui->setupUi(this);
+    connect(ui->lineEdit1, SIGNAL(returnPressed()), this, SLOT(next()));
+    connect(ui->lineEdit2, SIGNAL(returnPressed()), this, SLOT(next()));
+    connect(ui->lineEdit3, SIGNAL(returnPressed()), this, SLOT(next()));
+}
+
+Widget::~Widget()
+{
+    delete ui;
+}
+
+void Widget::next()
+{
+    QLineEdit *lineEdit = (QLineEdit *)sender();
+    if (lineEdit == ui->lineEdit1) {
+        ui->lineEdit2->setFocus();
+    } else if (lineEdit == ui->lineEdit2) {
+        ui->lineEdit3->setFocus();
+    } else if (lineEdit == ui->lineEdit3) {
+        ui->lineEdit1->setFocus();
+    }
+}

other/lineeditnext/widget.h

@@ -0,0 +1,25 @@
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include <QWidget>
+
+namespace Ui {
+class Widget;
+}
+
+class Widget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit Widget(QWidget *parent = 0);
+    ~Widget();
+
+private:
+    Ui::Widget *ui;
+
+private slots:
+    void next();
+};
+
+#endif // WIDGET_H

other/lineeditnext/widget.ui

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Widget</class>
+ <widget class="QWidget" name="Widget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>回车自动跳转</string>
+  </property>
+  <widget class="QLineEdit" name="lineEdit1">
+   <property name="geometry">
+    <rect>
+     <x>10</x>
+     <y>10</y>
+     <width>113</width>
+     <height>20</height>
+    </rect>
+   </property>
+  </widget>
+  <widget class="QLineEdit" name="lineEdit2">
+   <property name="geometry">
+    <rect>
+     <x>10</x>
+     <y>40</y>
+     <width>113</width>
+     <height>20</height>
+    </rect>
+   </property>
+  </widget>
+  <widget class="QLineEdit" name="lineEdit3">
+   <property name="geometry">
+    <rect>
+     <x>10</x>
+     <y>70</y>
+     <width>113</width>
+     <height>20</height>
+    </rect>
+   </property>
+  </widget>
+ </widget>
+ <layoutdefault spacing="6" margin="11"/>
+ <resources/>
+ <connections/>
+</ui>