1.修改配置文件
1 #TEMPLATE = app 2
3 DEFINES += CUSTOMMESSAGEBOX_LIBRARY 4 TEMPLATE = lib
2.在导出类的头文件上加如下代码
1 #if defined(CUSTOMMESSAGEBOX_LIBRARY)
2 # define CUSTOMMESSAGEBOXSHARED_EXPORT Q_DECL_EXPORT 3 #else
4 # define CUSTOMMESSAGEBOXSHARED_EXPORT Q_DECL_IMPORT 5 #endif
3.修改导出类定义
1 //class CustomMessageBox : public QDialog
2 class CUSTOMMESSAGEBOXSHARED_EXPORT CustomMessageBox : public QDialog
4.编译
若是 MinGW32 编译器，在编译之后会在文件夹下找到 ***.dll 和 ***.a 文件；若是 MSVC 编译器，则应该是 ***.dll 和 ***.lib。
5.使用
在使用该库的程序中，新建一个 include 文件夹，将 ***.a 文件 和 导出类的头文件 复制进这个文件夹，在程序中引入该头文件即可。在编译之后，将不同模式编译下的 dll 文件放入程序编译后的文件夹中，才能正常运行程序。
6.简单案例
custommessagebox.pro
1 #-------------------------------------------------
2 # 3 # Project created by QtCreator 2020-03-07T22:37:05
4 # 5 #-------------------------------------------------
6
7 QT += core gui 8
9 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets 10
11 TARGET = custommessagebox 12 #TEMPLATE = app 13
14 DEFINES += CUSTOMMESSAGEBOX_LIBRARY 15 TEMPLATE = lib 16
17 # The following define makes your compiler emit warnings if you use 18 # any feature of Qt which as been marked as deprecated (the exact warnings 19 # depend on your compiler). Please consult the documentation of the 20 # deprecated API in order to know how to port your code away from it. 21 DEFINES += QT_DEPRECATED_WARNINGS 22
23 # You can also make your code fail to compile if you use deprecated APIs. 24 # In order to do so, uncomment the following line. 25 # You can also select to disable deprecated APIs only up to a certain version of Qt. 26 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
27
28
29 SOURCES += \ 30 custommessagebox.cpp \ 31 # main.cpp 32
33 HEADERS += \ 34 custommessagebox.h 35
36 FORMS += \ 37 custommessagebox.ui 38
39 RESOURCES += \ 40 resources.qrc
custommessagebox.h
1 #ifndef CUSTOMMESSAGEBOX_H 2 #define CUSTOMMESSAGEBOX_H
3
4 #if defined(CUSTOMMESSAGEBOX_LIBRARY)
5 # define CUSTOMMESSAGEBOXSHARED_EXPORT Q_DECL_EXPORT 6 #else
7 # define CUSTOMMESSAGEBOXSHARED_EXPORT Q_DECL_IMPORT 8 #endif
9
10 #include <QDialog>
11
12 namespace Ui { 13 class CustomMessageBox; 14 } 15
16 //class CustomMessageBox : public QDialog
17 class CUSTOMMESSAGEBOXSHARED_EXPORT CustomMessageBox : public QDialog 18 { 19 Q_OBJECT 20
21 public: 22 explicit CustomMessageBox(QWidget *parent = 0); 23 ~CustomMessageBox(); 24
25 void setMessage(const QString msg, int type); 26
27 void test(); 28
29 private slots: 30 void on_btnOk_clicked(); 31
32 private: 33 Ui::CustomMessageBox *ui; 34
35 void initStyle(); //初始化无边框窗体
36
37 void moveFormToCenter(); //窗体居中显示
38 }; 39
40 #endif // CUSTOMMESSAGEBOX_H
custommessagebox.cpp
1 #include "custommessagebox.h"
2 #include "ui_custommessagebox.h"
3
4 #include <QDesktopWidget>
5 #include <QDebug>
6
7 CustomMessageBox::CustomMessageBox(QWidget *parent) : 8 QDialog(parent), 9 ui(new Ui::CustomMessageBox) 10 { 11 ui->setupUi(this); 12 this->initStyle(); 13 this->moveFormToCenter(); 14 } 15
16 CustomMessageBox::~CustomMessageBox() 17 { 18 delete ui; 19 } 20
21 void CustomMessageBox::setMessage(const QString msg, int type) 22 { 23 switch (type) { 24 case 1: 25 { 26 ui->labIcoMain->setStyleSheet("border-image: url(:/images/image/msg_question.png);"); 27 ui->lab_Title->setText("询问"); 28 break; 29 } 30 case 2: 31 { 32 ui->labIcoMain->setStyleSheet("border-image: url(:/images/image/msg_error.png);"); 33 ui->btnCancel->setVisible(false); 34 ui->lab_Title->setText("错误"); 35 break; 36 } 37 default: 38 { 39 ui->labIcoMain->setStyleSheet("border-image: url(:/images/image/msg_info.png);"); 40 ui->btnCancel->setVisible(false); 41 ui->lab_Title->setText("提示"); 42 break; 43 } 44 } 45 ui->labInfo->setText(msg); 46 this->setWindowTitle(ui->lab_Title->text()); 47 } 48
49 void CustomMessageBox::test() 50 { 51 qDebug() << "测试是否可以输出"; 52 } 53
54 void CustomMessageBox::initStyle() 55 { 56 QFont localFont = this->font(); 57 localFont.setPointSize(10); 58 localFont.setFamily("Microsoft YaHei"); 59 this->setFont(localFont); 60 this->setWindowTitle(ui->lab_Title->text()); 61 //设置窗体标题栏隐藏
62 this->setWindowFlags(Qt::FramelessWindowHint | Qt::WindowSystemMenuHint | Qt::WindowMinimizeButtonHint); 63 //设置图标
64 ui->lab_Ico->setStyleSheet("border-image: url(:/images/image/home.png);"); 65 ui->btnMenu_Close->setIcon(this->style()->standardIcon(QStyle::SP_TitleBarCloseButton)); 66 //关联关闭按钮
67 connect(ui->btnMenu_Close, SIGNAL(clicked()), this, SLOT(close())); 68 connect(ui->btnCancel, SIGNAL(clicked()), this, SLOT(close())); 69 } 70
71 void CustomMessageBox::moveFormToCenter() 72 { 73 int width = this->width(); 74 int height = this->height(); 75 QDesktopWidget dwt; 76 int deskWidth = dwt.availableGeometry().width(); 77 int deskHeight = dwt.availableGeometry().height(); 78 QPoint movePoint(deskWidth / 2 - width / 2, deskHeight / 2 - height / 2); 79 this->move(movePoint); 80 } 81
82 void CustomMessageBox::on_btnOk_clicked() 83 { 84 done(1); 85 this->close(); 86 }
custommessagebox.ui
省略
调用
1 void Widget::on_btnMeesageBox_clicked() 2 { 3 CustomMessageBox messageBox; 4 messageBox.setMessage("调用成功", 1); 5 messageBox.exec(); 6 }