写一个用QT+vs混合编程的插模机制实现简易计算器的案例
时间: 2024-03-08 20:46:13 浏览: 16
好的,这是一个简单的用QT+VS混合编程实现的简易计算器案例:
1. 首先,在QT中创建一个新的工程(例如,命名为Calculator),选择“QT Widgets Application”。
2. 在VS中打开Calculator.pro文件,将以下代码添加到文件末尾:
```
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/ -lCalculator
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/ -lCalculatord
```
3. 在VS中新建一个工程(例如,命名为CalculatorDLL),选择“DLL”模板。
4. 将以下代码添加到CalculatorDLL.cpp文件中:
```
#include "CalculatorDLL.h"
double CalculatorDLL::add(double a, double b)
{
return a + b;
}
double CalculatorDLL::subtract(double a, double b)
{
return a - b;
}
double CalculatorDLL::multiply(double a, double b)
{
return a * b;
}
double CalculatorDLL::divide(double a, double b)
{
return a / b;
}
```
5. 在CalculatorDLL.h中声明DLL中的函数:
```
#ifndef CALCULATORDLL_H
#define CALCULATORDLL_H
#include <QtCore/qglobal.h>
#if defined(CALCULATORDLL_LIBRARY)
# define CALCULATORDLLSHARED_EXPORT Q_DECL_EXPORT
#else
# define CALCULATORDLLSHARED_EXPORT Q_DECL_IMPORT
#endif
class CALCULATORDLLSHARED_EXPORT CalculatorDLL
{
public:
double add(double a, double b);
double subtract(double a, double b);
double multiply(double a, double b);
double divide(double a, double b);
};
#endif // CALCULATORDLL_H
```
6. 在QT中打开Calculator.cpp文件,将以下代码添加到文件末尾:
```
#include "CalculatorDLL.h"
void Calculator::on_addBtn_clicked()
{
double a = ui->num1Edit->text().toDouble();
double b = ui->num2Edit->text().toDouble();
CalculatorDLL calc;
double result = calc.add(a, b);
ui->resultLabel->setText(QString::number(result));
}
void Calculator::on_subtractBtn_clicked()
{
double a = ui->num1Edit->text().toDouble();
double b = ui->num2Edit->text().toDouble();
CalculatorDLL calc;
double result = calc.subtract(a, b);
ui->resultLabel->setText(QString::number(result));
}
void Calculator::on_multiplyBtn_clicked()
{
double a = ui->num1Edit->text().toDouble();
double b = ui->num2Edit->text().toDouble();
CalculatorDLL calc;
double result = calc.multiply(a, b);
ui->resultLabel->setText(QString::number(result));
}
void Calculator::on_divideBtn_clicked()
{
double a = ui->num1Edit->text().toDouble();
double b = ui->num2Edit->text().toDouble();
CalculatorDLL calc;
double result = calc.divide(a, b);
ui->resultLabel->setText(QString::number(result));
}
```
7. 在QT中打开Calculator.h文件,将以下代码添加到文件末尾:
```
#include "CalculatorDLL.h"
```
8. 在QT中打开Calculator.ui文件,添加4个QPushButton和2个QLineEdit,分别命名为addBtn、subtractBtn、multiplyBtn、divideBtn、num1Edit、num2Edit和resultLabel。
9. 在QT中打开Calculator.pro文件,将以下代码添加到文件末尾:
```
TARGET = Calculator
TEMPLATE = app
DEFINES += QT_DEPRECATED_WARNINGS
SOURCES += main.cpp\
Calculator.cpp
HEADERS += Calculator.h
FORMS += Calculator.ui
win32:LIBS += CalculatorDLL.lib
```
10. 编译并运行程序,即可使用简易计算器。