QT乱翻书-QStringDemo
作者：互联网
QT乱翻书-QStringDemo
#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 slots:
void on_pushButton_clicked();
void on_pushButton_2_clicked();
void on_pushButton_3_clicked();
void on_pushButton_4_clicked();
void on_pushButton_5_clicked();
void on_pushButton_6_clicked();
void on_pushButton_7_clicked();
void on_pushButton_8_clicked();
void on_pushButton_9_clicked();
void on_pushButton_10_clicked();
void on_pushButton_11_clicked();
void on_pushButton_12_clicked();
void on_pushButton_13_clicked();
void on_pushButton_14_clicked();
void on_pushButton_15_clicked();
void on_pushButton_16_clicked();
void on_pushButton_17_clicked();
void on_pushButton_18_clicked();
private:
Ui::Widget *ui;
};
#endif // WIDGET_H
/********************************************************************************
** Form generated from reading UI file 'widget.ui'
**
** Created by: Qt User Interface Compiler version 5.9.1
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
********************************************************************************/
#ifndef UI_WIDGET_H
#define UI_WIDGET_H
#include <QtCore/QVariant>
#include <QtWidgets/QAction>
#include <QtWidgets/QApplication>
#include <QtWidgets/QButtonGroup>
#include <QtWidgets/QCheckBox>
#include <QtWidgets/QComboBox>
#include <QtWidgets/QGridLayout>
#include <QtWidgets/QGroupBox>
#include <QtWidgets/QHBoxLayout>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QLabel>
#include <QtWidgets/QLineEdit>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QSpinBox>
#include <QtWidgets/QVBoxLayout>
#include <QtWidgets/QWidget>
QT_BEGIN_NAMESPACE
class Ui_Widget
{
public:
QVBoxLayout *verticalLayout;
QGridLayout *gridLayout_2;
QLabel *label;
QComboBox *comboBox1;
QLabel *label_2;
QComboBox *comboBox2;
QHBoxLayout *horizontalLayout;
QGroupBox *groupBox;
QGridLayout *gridLayout_3;
QPushButton *pushButton_14;
QPushButton *pushButton;
QPushButton *pushButton_2;
QPushButton *pushButton_11;
QPushButton *pushButton_12;
QPushButton *pushButton_15;
QPushButton *pushButton_16;
QPushButton *pushButton_17;
QPushButton *pushButton_13;
QGroupBox *groupBox_3;
QVBoxLayout *verticalLayout_2;
QPushButton *pushButton_4;
QPushButton *pushButton_5;
QPushButton *pushButton_7;
QPushButton *pushButton_9;
QGroupBox *groupBox_2;
QGridLayout *gridLayout_5;
QPushButton *pushButton_6;
QPushButton *pushButton_10;
QPushButton *pushButton_3;
QPushButton *pushButton_18;
QPushButton *pushButton_8;
QGridLayout *gridLayout;
QLabel *label_3;
QLineEdit *edtResult;
QCheckBox *checkBox;
QLabel *LabSpin;
QSpinBox *spinBox;
void setupUi(QWidget *Widget)
{
if (Widget->objectName().isEmpty())
Widget->setObjectName(QStringLiteral("Widget"));
Widget->resize(526, 339);
QFont font;
font.setPointSize(11);
Widget->setFont(font);
verticalLayout = new QVBoxLayout(Widget);
verticalLayout->setSpacing(6);
verticalLayout->setContentsMargins(11, 11, 11, 11);
verticalLayout->setObjectName(QStringLiteral("verticalLayout"));
gridLayout_2 = new QGridLayout();
gridLayout_2->setSpacing(6);
gridLayout_2->setObjectName(QStringLiteral("gridLayout_2"));
label = new QLabel(Widget);
label->setObjectName(QStringLiteral("label"));
label->setMaximumSize(QSize(50, 16777215));
gridLayout_2->addWidget(label, 0, 0, 1, 1);
comboBox1 = new QComboBox(Widget);
comboBox1->setObjectName(QStringLiteral("comboBox1"));
comboBox1->setEditable(true);
gridLayout_2->addWidget(comboBox1, 0, 2, 1, 1);
label_2 = new QLabel(Widget);
label_2->setObjectName(QStringLiteral("label_2"));
label_2->setMaximumSize(QSize(50, 16777215));
gridLayout_2->addWidget(label_2, 1, 0, 1, 1);
comboBox2 = new QComboBox(Widget);
comboBox2->setObjectName(QStringLiteral("comboBox2"));
comboBox2->setEditable(true);
gridLayout_2->addWidget(comboBox2, 1, 2, 1, 1);
verticalLayout->addLayout(gridLayout_2);
horizontalLayout = new QHBoxLayout();
horizontalLayout->setSpacing(6);
horizontalLayout->setObjectName(QStringLiteral("horizontalLayout"));
groupBox = new QGroupBox(Widget);
groupBox->setObjectName(QStringLiteral("groupBox"));
gridLayout_3 = new QGridLayout(groupBox);
gridLayout_3->setSpacing(6);
gridLayout_3->setContentsMargins(11, 11, 11, 11);
gridLayout_3->setObjectName(QStringLiteral("gridLayout_3"));
pushButton_14 = new QPushButton(groupBox);
pushButton_14->setObjectName(QStringLiteral("pushButton_14"));
gridLayout_3->addWidget(pushButton_14, 3, 1, 1, 1);
pushButton = new QPushButton(groupBox);
pushButton->setObjectName(QStringLiteral("pushButton"));
gridLayout_3->addWidget(pushButton, 0, 0, 1, 1);
pushButton_2 = new QPushButton(groupBox);
pushButton_2->setObjectName(QStringLiteral("pushButton_2"));
gridLayout_3->addWidget(pushButton_2, 0, 1, 1, 1);
pushButton_11 = new QPushButton(groupBox);
pushButton_11->setObjectName(QStringLiteral("pushButton_11"));
gridLayout_3->addWidget(pushButton_11, 1, 0, 1, 1);
pushButton_12 = new QPushButton(groupBox);
pushButton_12->setObjectName(QStringLiteral("pushButton_12"));
gridLayout_3->addWidget(pushButton_12, 1, 1, 1, 1);
pushButton_15 = new QPushButton(groupBox);
pushButton_15->setObjectName(QStringLiteral("pushButton_15"));
gridLayout_3->addWidget(pushButton_15, 2, 0, 1, 1);
pushButton_16 = new QPushButton(groupBox);
pushButton_16->setObjectName(QStringLiteral("pushButton_16"));
gridLayout_3->addWidget(pushButton_16, 2, 1, 1, 1);
pushButton_17 = new QPushButton(groupBox);
pushButton_17->setObjectName(QStringLiteral("pushButton_17"));
gridLayout_3->addWidget(pushButton_17, 4, 0, 1, 1);
pushButton_13 = new QPushButton(groupBox);
pushButton_13->setObjectName(QStringLiteral("pushButton_13"));
gridLayout_3->addWidget(pushButton_13, 4, 1, 1, 1);
horizontalLayout->addWidget(groupBox);
groupBox_3 = new QGroupBox(Widget);
groupBox_3->setObjectName(QStringLiteral("groupBox_3"));
verticalLayout_2 = new QVBoxLayout(groupBox_3);
verticalLayout_2->setSpacing(6);
verticalLayout_2->setContentsMargins(11, 11, 11, 11);
verticalLayout_2->setObjectName(QStringLiteral("verticalLayout_2"));
pushButton_4 = new QPushButton(groupBox_3);
pushButton_4->setObjectName(QStringLiteral("pushButton_4"));
verticalLayout_2->addWidget(pushButton_4);
pushButton_5 = new QPushButton(groupBox_3);
pushButton_5->setObjectName(QStringLiteral("pushButton_5"));
verticalLayout_2->addWidget(pushButton_5);
pushButton_7 = new QPushButton(groupBox_3);
pushButton_7->setObjectName(QStringLiteral("pushButton_7"));
verticalLayout_2->addWidget(pushButton_7);
pushButton_9 = new QPushButton(groupBox_3);
pushButton_9->setObjectName(QStringLiteral("pushButton_9"));
verticalLayout_2->addWidget(pushButton_9);
horizontalLayout->addWidget(groupBox_3);
groupBox_2 = new QGroupBox(Widget);
groupBox_2->setObjectName(QStringLiteral("groupBox_2"));
gridLayout_5 = new QGridLayout(groupBox_2);
gridLayout_5->setSpacing(6);
gridLayout_5->setContentsMargins(11, 11, 11, 11);
gridLayout_5->setObjectName(QStringLiteral("gridLayout_5"));
pushButton_6 = new QPushButton(groupBox_2);
pushButton_6->setObjectName(QStringLiteral("pushButton_6"));
gridLayout_5->addWidget(pushButton_6, 0, 0, 1, 1);
pushButton_10 = new QPushButton(groupBox_2);
pushButton_10->setObjectName(QStringLiteral("pushButton_10"));
gridLayout_5->addWidget(pushButton_10, 0, 1, 1, 1);
pushButton_3 = new QPushButton(groupBox_2);
pushButton_3->setObjectName(QStringLiteral("pushButton_3"));
gridLayout_5->addWidget(pushButton_3, 1, 0, 1, 1);
pushButton_18 = new QPushButton(groupBox_2);
pushButton_18->setObjectName(QStringLiteral("pushButton_18"));
gridLayout_5->addWidget(pushButton_18, 2, 0, 1, 1);
pushButton_8 = new QPushButton(groupBox_2);
pushButton_8->setObjectName(QStringLiteral("pushButton_8"));
gridLayout_5->addWidget(pushButton_8, 2, 1, 1, 1);
horizontalLayout->addWidget(groupBox_2);
verticalLayout->addLayout(horizontalLayout);
gridLayout = new QGridLayout();
gridLayout->setSpacing(6);
gridLayout->setObjectName(QStringLiteral("gridLayout"));
label_3 = new QLabel(Widget);
label_3->setObjectName(QStringLiteral("label_3"));
label_3->setMaximumSize(QSize(50, 16777215));
gridLayout->addWidget(label_3, 0, 0, 1, 1);
edtResult = new QLineEdit(Widget);
edtResult->setObjectName(QStringLiteral("edtResult"));
gridLayout->addWidget(edtResult, 0, 1, 1, 3);
checkBox = new QCheckBox(Widget);
checkBox->setObjectName(QStringLiteral("checkBox"));
gridLayout->addWidget(checkBox, 1, 0, 1, 2);
LabSpin = new QLabel(Widget);
LabSpin->setObjectName(QStringLiteral("LabSpin"));
LabSpin->setAlignment(Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter);
gridLayout->addWidget(LabSpin, 1, 2, 1, 1);
spinBox = new QSpinBox(Widget);
spinBox->setObjectName(QStringLiteral("spinBox"));
spinBox->setMaximum(1000);
gridLayout->addWidget(spinBox, 1, 3, 1, 1);
verticalLayout->addLayout(gridLayout);
retranslateUi(Widget);
QMetaObject::connectSlotsByName(Widget);
} // setupUi
void retranslateUi(QWidget *Widget)
{
Widget->setWindowTitle(QApplication::translate("Widget", "QString\345\270\270\347\224\250\345\212\237\350\203\275", Q_NULLPTR));
label->setText(QApplication::translate("Widget", "str1", Q_NULLPTR));
comboBox1->clear();
comboBox1->insertItems(0, QStringList()
<< QApplication::translate("Widget", "G:\\Qt5Book\\QT5.9Study", Q_NULLPTR)
<< QApplication::translate("Widget", "G:\\Qt5Book\\QT5.9Study\\qw.cpp", Q_NULLPTR)
<< QApplication::translate("Widget", "\345\255\246\347\224\237\345\247\223\345\220\215\357\274\214\347\224\267\357\274\2141984-3-4\357\274\214\346\261\211\346\227\217\357\274\214\345\261\261\344\270\234", Q_NULLPTR)
);
label_2->setText(QApplication::translate("Widget", "str2", Q_NULLPTR));
comboBox2->clear();
comboBox2->insertItems(0, QStringList()
<< QApplication::translate("Widget", "\\", Q_NULLPTR)
<< QApplication::translate("Widget", ".cpp", Q_NULLPTR)
<< QApplication::translate("Widget", ":", Q_NULLPTR)
<< QApplication::translate("Widget", "\357\274\214", Q_NULLPTR)
);
groupBox->setTitle(QApplication::translate("Widget", "\345\255\227\347\254\246\344\270\262", Q_NULLPTR));
pushButton_14->setText(QApplication::translate("Widget", "section", Q_NULLPTR));
pushButton->setText(QApplication::translate("Widget", "Append", Q_NULLPTR));
pushButton_2->setText(QApplication::translate("Widget", "Prepend", Q_NULLPTR));
pushButton_11->setText(QApplication::translate("Widget", "toUpper", Q_NULLPTR));
pushButton_12->setText(QApplication::translate("Widget", "toLower", Q_NULLPTR));
pushButton_15->setText(QApplication::translate("Widget", "left", Q_NULLPTR));
pushButton_16->setText(QApplication::translate("Widget", "right", Q_NULLPTR));
pushButton_17->setText(QApplication::translate("Widget", "simplified", Q_NULLPTR));
pushButton_13->setText(QApplication::translate("Widget", "trimmed", Q_NULLPTR));
groupBox_3->setTitle(QApplication::translate("Widget", "\346\225\260\345\255\227", Q_NULLPTR));
pushButton_4->setText(QApplication::translate("Widget", "count", Q_NULLPTR));
pushButton_5->setText(QApplication::translate("Widget", "size", Q_NULLPTR));
pushButton_7->setText(QApplication::translate("Widget", "indexOf", Q_NULLPTR));
pushButton_9->setText(QApplication::translate("Widget", "lastIndexOf", Q_NULLPTR));
groupBox_2->setTitle(QApplication::translate("Widget", "\351\200\273\350\276\221\345\210\244\346\226\255", Q_NULLPTR));
pushButton_6->setText(QApplication::translate("Widget", "endsWith", Q_NULLPTR));
pushButton_10->setText(QApplication::translate("Widget", "startsWith", Q_NULLPTR));
pushButton_3->setText(QApplication::translate("Widget", "contains", Q_NULLPTR));
pushButton_18->setText(QApplication::translate("Widget", "isNull", Q_NULLPTR));
pushButton_8->setText(QApplication::translate("Widget", "isEmpty", Q_NULLPTR));
label_3->setText(QApplication::translate("Widget", "\347\273\223\346\236\234", Q_NULLPTR));
checkBox->setText(QApplication::translate("Widget", "CheckBox", Q_NULLPTR));
LabSpin->setText(QApplication::translate("Widget", "LabSpin", Q_NULLPTR));
} // retranslateUi
};
namespace Ui {
class Widget: public Ui_Widget {};
} // namespace Ui
QT_END_NAMESPACE
#endif // UI_WIDGET_H
#include "widget.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_pushButton_clicked()
{//append()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=ui->comboBox2->currentText();
str1.append(str2);
ui->edtResult->setText(str1);
}
void Widget::on_pushButton_2_clicked()
{//prepend()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=ui->comboBox2->currentText();
str1.prepend(str2);
ui->edtResult->setText(str1);
}
void Widget::on_pushButton_3_clicked()
{//contains()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=ui->comboBox2->currentText();
bool chk;
chk=str1.contains(str2);
ui->checkBox->setChecked(chk);
ui->checkBox->setText("contains()");
ui->checkBox->sizeHint();
}
void Widget::on_pushButton_4_clicked()
{//count()函数
QString str1=ui->comboBox1->currentText();
int i=str1.count();
// int i=str1.length();
ui->spinBox->setValue(i);
ui->LabSpin->setText("count()");
}
void Widget::on_pushButton_5_clicked()
{//size()函数
QString str1;
str1=ui->comboBox1->currentText();
int i=str1.size();
ui->spinBox->setValue(i);
ui->LabSpin->setText("size()");
}
void Widget::on_pushButton_6_clicked()
{//endsWith()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=ui->comboBox2->currentText();
bool chk;
chk=str1.endsWith(str2);
ui->checkBox->setChecked(chk);
ui->checkBox->setText("endsWith()");
ui->checkBox->sizeHint();
}
void Widget::on_pushButton_7_clicked()
{//indexOf()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=ui->comboBox2->currentText();
int i;
i=str1.indexOf(str2);
ui->spinBox->setValue(i);
ui->LabSpin->setText("indexOf()");
}
void Widget::on_pushButton_8_clicked()
{//isEmpty()函数
QString str1;
str1=ui->comboBox1->currentText();
bool chk;
chk=str1.isEmpty();
ui->checkBox->setChecked(chk);
ui->checkBox->setText("isEmpty()");
ui->checkBox->sizeHint();
}
void Widget::on_pushButton_9_clicked()
{//lastIndexOf()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=ui->comboBox2->currentText();
int i;
i=str1.lastIndexOf(str2);
ui->spinBox->setValue(i);
ui->LabSpin->setText("lastIndexOf()");
}
void Widget::on_pushButton_10_clicked()
{//startsWith()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=ui->comboBox2->currentText();
bool chk;
chk=str1.startsWith(str2);
ui->checkBox->setChecked(chk);
ui->checkBox->setText("startsWith()");
ui->checkBox->sizeHint();
}
void Widget::on_pushButton_11_clicked()
{//toUpper()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=str1.toUpper();
ui->edtResult->setText(str2);
}
void Widget::on_pushButton_12_clicked()
{//toLower()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
str2=str1.toLower();
ui->edtResult->setText(str2);
}
void Widget::on_pushButton_13_clicked()
{//trimmed()函数
QString str1;
str1=ui->comboBox1->currentText();
str1=str1.trimmed();
ui->edtResult->setText(str1);
}
void Widget::on_pushButton_14_clicked()
{//section()函数
int i;
QString str1,str2,str3;
str1=ui->comboBox1->currentText();
i=ui->spinBox->value();
// str2=str1.section('\\',2,2);
str3=ui->comboBox2->currentText();
if (QString::compare(str3,"\\",Qt::CaseInsensitive)==0)
str2=str1.section('\\',i,i+1); //
else
str2=str1.section(str3,i,i+1); //
ui->edtResult->setText(str2);
}
void Widget::on_pushButton_15_clicked()
{//left()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
int v=ui->spinBox->value();
str2=str1.left(v);
ui->edtResult->setText(str2);
}
void Widget::on_pushButton_16_clicked()
{//right()函数
QString str1,str2;
str1=ui->comboBox1->currentText();
int cnt=str1.size();
int v=ui->spinBox->value();
str2=str1.right(cnt-v-1);
ui->edtResult->setText(str2);
}
void Widget::on_pushButton_17_clicked()
{//simplified()函数
QString str1;
str1=ui->comboBox1->currentText();
str1=str1.simplified();
ui->edtResult->setText(str1);
}
void Widget::on_pushButton_18_clicked()
{//isNull()函数
QString str1;
str1=ui->comboBox1->currentText();
bool chk;
chk=str1.isNull();
ui->checkBox->setChecked(chk);
ui->checkBox->setText("isNull()");
ui->checkBox->sizeHint();
}
<?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>746</width>
<height>438</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>11</pointsize>
</font>
</property>
<property name="windowTitle">
<string>QString常用功能</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<layout class="QGridLayout" name="gridLayout_2">
<item row="0" column="0">
<widget class="QLabel" name="label">
<property name="maximumSize">
<size>
<width>50</width>
<height>16777215</height>
</size>
</property>
<property name="text">
<string>str1</string>
</property>
</widget>
</item>
<item row="0" column="2">
<widget class="QComboBox" name="comboBox1">
<property name="editable">
<bool>true</bool>
</property>
<item>
<property name="text">
<string>G:\Qt5Book\QT5.9Study</string>
</property>
</item>
<item>
<property name="text">
<string>G:\Qt5Book\QT5.9Study\qw.cpp</string>
</property>
</item>
<item>
<property name="text">
<string>学生姓名，男，1984-3-4，汉族，山东</string>
</property>
</item>
</widget>
</item>
<item row="1" column="0">
<widget class="QLabel" name="label_2">
<property name="maximumSize">
<size>
<width>50</width>
<height>16777215</height>
</size>
</property>
<property name="text">
<string>str2</string>
</property>
</widget>
</item>
<item row="1" column="2">
<widget class="QComboBox" name="comboBox2">
<property name="editable">
<bool>true</bool>
</property>
<item>
<property name="text">
<string>\</string>
</property>
</item>
<item>
<property name="text">
<string>.cpp</string>
</property>
</item>
<item>
<property name="text">
<string>:</string>
</property>
</item>
<item>
<property name="text">
<string>，</string>
</property>
</item>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QGroupBox" name="groupBox">
<property name="title">
<string>字符串</string>
</property>
<layout class="QGridLayout" name="gridLayout_3">
<item row="3" column="1">
<widget class="QPushButton" name="pushButton_14">
<property name="text">
<string>section</string>
</property>
</widget>
</item>
<item row="0" column="0">
<widget class="QPushButton" name="pushButton">
<property name="text">
<string>Append</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QPushButton" name="pushButton_2">
<property name="text">
<string>Prepend</string>
</property>
</widget>
</item>
<item row="1" column="0">
<widget class="QPushButton" name="pushButton_11">
<property name="text">
<string>toUpper</string>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="QPushButton" name="pushButton_12">
<property name="text">
<string>toLower</string>
</property>
</widget>
</item>
<item row="2" column="0">
<widget class="QPushButton" name="pushButton_15">
<property name="text">
<string>left</string>
</property>
</widget>
</item>
<item row="2" column="1">
<widget class="QPushButton" name="pushButton_16">
<property name="text">
<string>right</string>
</property>
</widget>
</item>
<item row="4" column="0">
<widget class="QPushButton" name="pushButton_17">
<property name="text">
<string>simplified</string>
</property>
</widget>
</item>
<item row="4" column="1">
<widget class="QPushButton" name="pushButton_13">
<property name="text">
<string>trimmed</string>
</property>
</widget>
</item>
</layout>
</widget>
</item>
<item>
<widget class="QGroupBox" name="groupBox_3">
<property name="title">
<string>数字</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout_2">
<item>
<widget class="QPushButton" name="pushButton_4">
<property name="text">
<string>count</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_5">
<property name="text">
<string>size</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_7">
<property name="text">
<string>indexOf</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="pushButton_9">
<property name="text">
<string>lastIndexOf</string>
</property>
</widget>
</item>
</layout>
</widget>
</item>
<item>
<widget class="QGroupBox" name="groupBox_2">
<property name="title">
<string>逻辑判断</string>
</property>
<layout class="QGridLayout" name="gridLayout_5">
<item row="0" column="0">
<widget class="QPushButton" name="pushButton_6">
<property name="text">
<string>endsWith</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QPushButton" name="pushButton_10">
<property name="text">
<string>startsWith</string>
</property>
</widget>
</item>
<item row="1" column="0">
<widget class="QPushButton" name="pushButton_3">
<property name="text">
<string>contains</string>
</property>
</widget>
</item>
<item row="2" column="0">
<widget class="QPushButton" name="pushButton_18">
<property name="text">
<string>isNull</string>
</property>
</widget>
</item>
<item row="2" column="1">
<widget class="QPushButton" name="pushButton_8">
<property name="text">
<string>isEmpty</string>
</property>
</widget>
</item>
</layout>
</widget>
</item>
</layout>
</item>
<item>
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0">
<widget class="QLabel" name="label_3">
<property name="maximumSize">
<size>
<width>50</width>
<height>16777215</height>
</size>
</property>
<property name="text">
<string>结果</string>
</property>
</widget>
</item>
<item row="0" column="1" colspan="3">
<widget class="QLineEdit" name="edtResult"/>
</item>
<item row="1" column="0" colspan="2">
<widget class="QCheckBox" name="checkBox">
<property name="text">
<string>CheckBox</string>
</property>
</widget>
</item>
<item row="1" column="2">
<widget class="QLabel" name="LabSpin">
<property name="text">
<string>LabSpin</string>
</property>
<property name="alignment">
<set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
</property>
</widget>
</item>
<item row="1" column="3">
<widget class="QSpinBox" name="spinBox">
<property name="maximum">
<number>1000</number>
</property>
</widget>
</item>
</layout>
</item>
</layout>
</widget>
<layoutdefault spacing="6" margin="11"/>
<resources/>
<connections/>
</ui>
标签：Widget,setText,QT,pushButton,gridLayout,ui,翻书,QStringDemo,str1 来源： https://www.cnblogs.com/kanbuxiaqu/p/15685600.html