1 QT += core gui
2
3 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
4
5 CONFIG += c++11
6 TRANSLATIONS += qt_en_cn.ts
7
8 # The following define makes your compiler emit warnings if you use
9 # any Qt feature that has been marked deprecated (the exact warnings
10 # depend on your compiler). Please consult the documentation of the
11 # deprecated API in order to know how to port your code away from it.
12 DEFINES += QT_DEPRECATED_WARNINGS
13
14 # You can also make your code fail to compile if it uses deprecated APIs.
15 # In order to do so, uncomment the following line.
16 # You can also select to disable deprecated APIs only up to a certain version of Qt.
17 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
18
19 SOURCES += \
20 main.cpp \
21 mainwindow.cpp
22
23 HEADERS += \
24 mainwindow.h
25
26 FORMS += \
27 mainwindow.ui
28
29 #TRANSLATION += translation_simpleChinese.qm
30 #RANSLATIONS += qzher_en.ts
31
32 # Default rules for deployment.
33 qnx: target.path = /tmp/$${TARGET}/bin
34 else: unix:!android: target.path = /opt/$${TARGET}/bin
35 !isEmpty(target.path): INSTALLS += target
36
37 RESOURCES += \
38 resources.qrc
1 #include "mainwindow.h"
2
3 #include <QApplication>
4 #include <QTranslator>
5
6 int main(int argc, char *argv[])
7 {
8 QApplication a(argc, argv);
9 MainWindow w;
10
11 // 我的路径为D:\RuanJian\QT5\Qt5.14.2\5.14.2\msvc2017_64\translations（仅作为参考）
12 QTranslator tran;
13 bool IsLoad = tran.load(":/new/prefix1/qt_zh_CN.qm");//注,这里使用的是绝对路径,建议把.qm拷贝到工程目录下,然后使用相对路径.
14 if(IsLoad)
15 {
16 a.installTranslator(&tran);
17 }
18 w.show();
19 return a.exec();
20 }
1 #ifndef MAINWINDOW_H
2 #define MAINWINDOW_H
3
4 #include <QMainWindow>
5 #include <QMessageBox>
6 #include <QDebug>
7
8 QT_BEGIN_NAMESPACE
9 namespace Ui { class MainWindow; }
10 QT_END_NAMESPACE
11
12 class MainWindow : public QMainWindow
13 {
14 Q_OBJECT
15
16 public:
17 MainWindow(QWidget *parent = nullptr);
18 ~MainWindow();
19
20 private slots:
21 void on_pushButton_clicked();
22
23 void on_pushButton_2_clicked();
24
25 void on_pushButton_3_clicked();
26
27 void on_pushButton_4_clicked();
28
29 void on_pushButton_5_clicked();
30
31 void on_pushButton_6_clicked();
32
33 void on_pushButton_7_clicked();
34
35 void on_pushButton_8_clicked();
36
37 void on_pushButton_9_clicked();
38
39 void on_pushButton_10_clicked();
40
41 void on_pushButton_11_clicked();
42
43 void on_pushButton_12_clicked();
44
45 void on_pushButton_13_clicked();
46
47 void on_pushButton_14_clicked();
48
49 void on_pushButton_15_clicked();
50
51 void on_pushButton_16_clicked();
52
53 void on_pushButton_17_clicked();
54
55 void on_pushButton_18_clicked();
56
57 private:
58 Ui::MainWindow *ui;
59 };
60 #endif // MAINWINDOW_H
8 #include "mainwindow.h"
9 #include "ui_mainwindow.h"
10
11 MainWindow::MainWindow(QWidget *parent)
12 : QMainWindow(parent)
13 , ui(new Ui::MainWindow)
14 {
15 ui->setupUi(this);
16 }
17
18 MainWindow::~MainWindow()
19 {
20 delete ui;
21 }
22
23 // 常用法
24 void MainWindow::on_pushButton_clicked()
25 {
26 QMessageBox::information(NULL, "Title", "Content",
27 QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
28 }
29 // 第四第五为默认参数
30 void MainWindow::on_pushButton_2_clicked()
31 {
32 QMessageBox::information(NULL, "Title", "Content");
33 }
34 // 与实例1相同
35 void MainWindow::on_pushButton_3_clicked()
36 {
37 QMessageBox::information(NULL, "Title", "Content",QMessageBox::Yes|QMessageBox::No);
38 }
39 // 添加多个按钮用|运算符连接
40 void MainWindow::on_pushButton_4_clicked()
41 {
42 QMessageBox::information(NULL, "Title", "Content",QMessageBox::Yes|QMessageBox::No|
43 QMessageBox::Abort);
44 }
45 // 创建消息提示框后，我们怎么知道用户点了什么呢
46 void MainWindow::on_pushButton_5_clicked()
47 {
48 QMessageBox:: StandardButton result= QMessageBox::information(NULL, "Title", "Content",QMessageBox::Yes|QMessageBox::No);
49 switch (result)
50 {
51 case QMessageBox::Yes:
52 setWindowTitle("Yes");
53 break;
54 case QMessageBox::No:
55 setWindowTitle("No");
56 break;
57 default:
58 break;
59 }
60 }
61 // critical adj. 关键的; 批评的，爱挑剔的; 严重的; 极重要的;
62 void MainWindow::on_pushButton_6_clicked()
63 {
64 QMessageBox::critical(NULL, "critical", "Content", QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
65 }
66 // warning adj.警告的;告诫的;引以为戒的
67 void MainWindow::on_pushButton_7_clicked()
68 {
69 QMessageBox::warning(NULL, "warning", "Content", QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
70 }
71 // 问题;疑问;(待讨论或处理的)事情;议题;课题;怀疑;困惑
72 void MainWindow::on_pushButton_8_clicked()
73 {
74 QMessageBox::question(NULL, "question", "Content", QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
75 }
76 // 关于;对于;目的是;为了;涉及…方面;忙于;从事于
77 void MainWindow::on_pushButton_9_clicked()
78 {
79 QMessageBox::about(NULL, "About", "https://www.cnblogs.com/FKdelphi/");
80 }
81 // 创建的QMessageBox对象，而不是用上面的static函数,
82 // messageBox是函数局部变量,函数结束后它的生命周期也结束了。会出现消息框一闪而过
83 void MainWindow::on_pushButton_10_clicked()
84 {
85 QMessageBox messageBox;
86 messageBox.show();
87 }
88 // 这样就好理解了，c++函数里面的static变量在函数结束时不会被回收。
89 void MainWindow::on_pushButton_11_clicked()
90 {
91 static QMessageBox messageBox;
92 messageBox.show();
93 }
94 // 这样写也能显示提示框，但是这样会内存泄漏。
95 void MainWindow::on_pushButton_12_clicked()
96 {
97 QMessageBox *messageBox=new QMessageBox;
98 messageBox->show();
99 }
100 // 因为QMessageBox继承QDialog，而QDialog有一个神奇的函数exec()，
101 // 调用这个函数后，消息循环会在这个函数里面进行更新，而调用它的函数是被“暂停”的，
102 // 就是说等用户点击按钮后，调用exec()的函数才继续执行。
103 void MainWindow::on_pushButton_13_clicked()
104 {
105 QMessageBox messageBox(QMessageBox::NoIcon,
106 QStringLiteral("退出"), QStringLiteral("你确定要退出吗?"),
107 QMessageBox::Yes | QMessageBox::No, NULL); ;
108 int result=messageBox.exec();
109
110
111 switch (result)
112 {
113 case QMessageBox::Yes:
114 qDebug("Yes");
115 close();
116 break;
117 case QMessageBox::No:
118 setWindowTitle("No");
119 break;
120 default:
121 break;
122 }
123 }
124
125 void MainWindow::on_pushButton_14_clicked()
126 {
127 QMessageBox box(QMessageBox::Warning, QStringLiteral("警告"), QStringLiteral("不能点击这个按钮！"));
128 box.setStandardButtons(QMessageBox::Ok);
129 box.setButtonText(QMessageBox::Ok, QStringLiteral("确定"));
130 box.exec();
131 }
132
133 void MainWindow::on_pushButton_15_clicked()
134 {
135 QMessageBox box(QMessageBox::Warning, tr("Qt warning"), tr("Qt wo re you daye"));
136 box.exec();
137 }
138
139 void MainWindow::on_pushButton_16_clicked()
140 {
141 int result = QMessageBox::information(NULL,
142 QStringLiteral("提示"),
143 QStringLiteral("显示信息！"),
144 QStringLiteral("确定"),
145 QStringLiteral("取消"));
146 setWindowTitle(QString::number(result));
147 }
148
149 void MainWindow::on_pushButton_17_clicked()
150 {
151 QPushButton *okbtn=new QPushButton(QStringLiteral("确定"));
152 QPushButton *cancelbtn=new QPushButton(QStringLiteral("取消"));
153 QMessageBox *mymsgbox=new QMessageBox;
154 mymsgbox->addButton(okbtn,QMessageBox::AcceptRole);
155 mymsgbox->addButton(cancelbtn,QMessageBox::RejectRole);
156 int result = mymsgbox->exec();
157 switch (result)
158 {
159 case QMessageBox::AcceptRole:
160 qDebug("ok");
161 close();
162 break;
163 case QMessageBox::RejectRole:
164 setWindowTitle("No");
165 break;
166 default:
167 break;
168 }
169 // 你TMD记得删除呀，要不有内存泄漏。
170 return;
171 delete okbtn;
172 delete cancelbtn;
173 delete mymsgbox;
174 }
175
176 void MainWindow::on_pushButton_18_clicked()
177 {
178 QMessageBox::information(NULL,
179 QStringLiteral("提示"),
180 QStringLiteral("有人说可以修改qt_en.qm和 qt_zh_CN.qm，反正我没实现！"),
181 QStringLiteral("他娘的"));
182 }
1 <?xml version="1.0" encoding="UTF-8"?> 2 <ui version="4.0"> 3 <class>MainWindow</class> 4 <widget class="QMainWindow" name="MainWindow"> 5 <property name="geometry"> 6 <rect> 7 <x>0</x> 8 <y>0</y> 9 <width>602</width> 10 <height>287</height> 11 </rect> 12 </property> 13 <property name="windowTitle"> 14 <string>MainWindow</string> 15 </property> 16 <widget class="QWidget" name="centralwidget"> 17 <widget class="QPushButton" name="pushButton"> 18 <property name="geometry"> 19 <rect> 20 <x>30</x> 21 <y>20</y> 22 <width>100</width> 23 <height>23</height> 24 </rect> 25 </property> 26 <property name="text"> 27 <string>information常规</string> 28 </property> 29 </widget> 30 <widget class="QPushButton" name="pushButton_2"> 31 <property name="geometry"> 32 <rect> 33 <x>30</x> 34 <y>50</y> 35 <width>100</width> 36 <height>23</height> 37 </rect> 38 </property> 39 <property name="text"> 40 <string>4、5默认参数</string> 41 </property> 42 </widget> 43 <widget class="QPushButton" name="pushButton_3"> 44 <property name="geometry"> 45 <rect> 46 <x>30</x> 47 <y>80</y> 48 <width>100</width> 49 <height>23</height> 50 </rect> 51 </property> 52 <property name="text"> 53 <string>与实例1相同</string> 54 </property> 55 </widget> 56 <widget class="QPushButton" name="pushButton_4"> 57 <property name="geometry"> 58 <rect> 59 <x>30</x> 60 <y>110</y> 61 <width>100</width> 62 <height>23</height> 63 </rect> 64 </property> 65 <property name="text"> 66 <string>增加按钮</string> 67 </property> 68 </widget> 69 <widget class="QPushButton" name="pushButton_5"> 70 <property name="geometry"> 71 <rect> 72 <x>30</x> 73 <y>140</y> 74 <width>100</width> 75 <height>23</height> 76 </rect> 77 </property> 78 <property name="text"> 79 <string>用户点了什么</string> 80 </property> 81 </widget> 82 <widget class="QPushButton" name="pushButton_6"> 83 <property name="geometry"> 84 <rect> 85 <x>150</x> 86 <y>20</y> 87 <width>100</width> 88 <height>23</height> 89 </rect> 90 </property> 91 <property name="text"> 92 <string>严重的</string> 93 </property> 94 </widget> 95 <widget class="QPushButton" name="pushButton_7"> 96 <property name="geometry"> 97 <rect> 98 <x>260</x> 99 <y>20</y> 100 <width>100</width> 101 <height>23</height> 102 </rect> 103 </property> 104 <property name="text"> 105 <string>警告</string> 106 </property> 107 </widget> 108 <widget class="QPushButton" name="pushButton_8"> 109 <property name="geometry"> 110 <rect> 111 <x>370</x> 112 <y>20</y> 113 <width>100</width> 114 <height>23</height> 115 </rect> 116 </property> 117 <property name="text"> 118 <string>问题</string> 119 </property> 120 </widget> 121 <widget class="QPushButton" name="pushButton_9"> 122 <property name="geometry"> 123 <rect> 124 <x>480</x> 125 <y>20</y> 126 <width>100</width> 127 <height>23</height> 128 </rect> 129 </property> 130 <property name="text"> 131 <string>关于</string> 132 </property> 133 </widget> 134 <widget class="QPushButton" name="pushButton_10"> 135 <property name="geometry"> 136 <rect> 137 <x>30</x> 138 <y>210</y> 139 <width>100</width> 140 <height>23</height> 141 </rect> 142 </property> 143 <property name="text"> 144 <string>QMessageBox对象</string> 145 </property> 146 </widget> 147 <widget class="QPushButton" name="pushButton_11"> 148 <property name="geometry"> 149 <rect> 150 <x>150</x> 151 <y>210</y> 152 <width>100</width> 153 <height>23</height> 154 </rect> 155 </property> 156 <property name="text"> 157 <string>static变量</string> 158 </property> 159 </widget> 160 <widget class="QPushButton" name="pushButton_12"> 161 <property name="geometry"> 162 <rect> 163 <x>260</x> 164 <y>210</y> 165 <width>100</width> 166 <height>23</height> 167 </rect> 168 </property> 169 <property name="text"> 170 <string>内存泄漏</string> 171 </property> 172 </widget> 173 <widget class="QPushButton" name="pushButton_13"> 174 <property name="geometry"> 175 <rect> 176 <x>370</x> 177 <y>210</y> 178 <width>100</width> 179 <height>23</height> 180 </rect> 181 </property> 182 <property name="text"> 183 <string>调用exec()</string> 184 </property> 185 </widget> 186 <widget class="QPushButton" name="pushButton_14"> 187 <property name="geometry"> 188 <rect> 189 <x>30</x> 190 <y>250</y> 191 <width>100</width> 192 <height>23</height> 193 </rect> 194 </property> 195 <property name="text"> 196 <string>中文方法1</string> 197 </property> 198 </widget> 199 <widget class="QPushButton" name="pushButton_15"> 200 <property name="geometry"> 201 <rect> 202 <x>150</x> 203 <y>250</y> 204 <width>100</width> 205 <height>23</height> 206 </rect> 207 </property> 208 <property name="text"> 209 <string>中文方法2</string> 210 </property> 211 </widget> 212 <widget class="QPushButton" name="pushButton_16"> 213 <property name="geometry"> 214 <rect> 215 <x>260</x> 216 <y>250</y> 217 <width>100</width> 218 <height>23</height> 219 </rect> 220 </property> 221 <property name="text"> 222 <string>中文方法3</string> 223 </property> 224 </widget> 225 <widget class="QPushButton" name="pushButton_17"> 226 <property name="geometry"> 227 <rect> 228 <x>370</x> 229 <y>250</y> 230 <width>100</width> 231 <height>23</height> 232 </rect> 233 </property> 234 <property name="text"> 235 <string>中文显示4</string> 236 </property> 237 </widget> 238 <widget class="QPushButton" name="pushButton_18"> 239 <property name="geometry"> 240 <rect> 241 <x>480</x> 242 <y>250</y> 243 <width>100</width> 244 <height>23</height> 245 </rect> 246 </property> 247 <property name="text"> 248 <string>中文显示5失败</string> 249 </property> 250 </widget> 251 </widget> 252 </widget> 253 <resources/> 254 <connections/> 255 </ui>
resources省略
