Question

Qt中如何要想把采集到的数据画成曲线，需要用到哪些类？

RT
（要Qt自带的，第三方的就暂时免了）

Answer 1

ndow.h 头文件
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtGui/QMainWindow>
#include <QStatusBar>
#include <QMouseEvent>

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
MainWindow(QWidget *parent = 0);
~MainWindow();

protected:
void mouseMoveEvent(QMouseEvent *);
private:
QStatusBar* m_pStatus;
};

#endif // MAINWINDOW_H

//mainwindow.cpp

#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
setMouseTracking(true);
m_pStatus = new QStatusBar();
setStatusBar(m_pStatus);
m_pStatus->showMessage("application init ok!");
}

void MainWindow::mouseMoveEvent(QMouseEvent *event)
{
QPoint pos = event->pos();
m_pStatus->showMessage(QString("x:%1,y:%2").arg(pos.x()).arg(pos.y()));
}

MainWindow::~MainWindow()
{
}

经过测试，完全ok，唉
另外,站长团上有产品团购,便宜有保证

Answer 2

ndow.h 头文件
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtGui/QMainWindow>
#include <QStatusBar>
#include <QMouseEvent>

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
MainWindow(QWidget *parent = 0);
~MainWindow();

protected:
void mouseMoveEvent(QMouseEvent *);
private:
QStatusBar* m_pStatus;
};

#endif // MAINWINDOW_H

//mainwindow.cpp

#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
setMouseTracking(true);
m_pStatus = new QStatusBar();
setStatusBar(m_pStatus);
m_pStatus->showMessage("application init ok!");
}

void MainWindow::mouseMoveEvent(QMouseEvent *event)
{
QPoint pos = event->pos();
m_pStatus->showMessage(QString("x:%1,y:%2").arg(pos.x()).arg(pos.y()));
}

MainWindow::~MainWindow()
{
}

经过测试，完全ok，唉
另外,站长团上有产品团购,便宜有保证

Answer 3

qwt

Answer 4

自己写的要好点～～～

Answer 5

ndow.h 头文件
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtGui/QMainWindow>
#include <QStatusBar>
#include <QMouseEvent>

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
MainWindow(QWidget *parent = 0);
~MainWindow();

protected:
void mouseMoveEvent(QMouseEvent *);
private:
QStatusBar* m_pStatus;
};

#endif // MAINWINDOW_H

//mainwindow.cpp

#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
setMouseTracking(true);
m_pStatus = new QStatusBar();
setStatusBar(m_pStatus);
m_pStatus->showMessage("application init ok!");
}

void MainWindow::mouseMoveEvent(QMouseEvent *event)
{
QPoint pos = event->pos();
m_pStatus->showMessage(QString("x:%1,y:%2").arg(pos.x()).arg(pos.y()));
}

MainWindow::~MainWindow()
{
}

经过测试，完全ok，唉