给出上述所有步骤相应的代码
时间: 2024-04-11 14:27:32 浏览: 15
以下是上述步骤的代码示例:
1. main.cpp:
```cpp
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
```
2. mainwindow.h:
```cpp
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QPushButton>
#include "themecontroller.h"
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private:
QPushButton *functionButton;
ThemeController *themeController;
private slots:
void onFunctionButtonClicked();
};
#endif // MAINWINDOW_H
```
3. mainwindow.cpp:
```cpp
#include "mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
functionButton = new QPushButton("Function Button", this);
connect(functionButton, SIGNAL(clicked()), this, SLOT(onFunctionButtonClicked()));
themeController = new ThemeController(this);
}
MainWindow::~MainWindow()
{
}
void MainWindow::onFunctionButtonClicked()
{
themeController->toggleTheme();
}
```
4. themecontroller.h:
```cpp
#ifndef THEMECONTROLLER_H
#define THEMECONTROLLER_H
#include <QObject>
#include <QWidget>
class ThemeController : public QObject
{
Q_OBJECT
public:
explicit ThemeController(QWidget *parent = nullptr);
signals:
public slots:
void toggleTheme();
private:
bool isDarkTheme;
};
#endif // THEMECONTROLLER_H
```
5. themecontroller.cpp:
```cpp
#include "themecontroller.h"
ThemeController::ThemeController(QWidget *parent) : QObject(parent)
{
isDarkTheme = false;
}
void ThemeController::toggleTheme()
{
isDarkTheme = !isDarkTheme;
if (isDarkTheme) {
QPalette pal = parent()->palette();
pal.setColor(QPalette::Background, Qt::darkGray);
parent()->setAutoFillBackground(true);
parent()->setPalette(pal);
} else {
QPalette pal = parent()->palette();
pal.setColor(QPalette::Background, Qt::white);
parent()->setAutoFillBackground(true);
parent()->setPalette(pal);
}
}
```
请注意,这只是一个简单的示例代码,您可能需要根据自己的需求进行修改和扩展。同时,确保在.pro文件中添加相应的头文件和源文件。
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