主要是记录柱状图的数值显示，散点图的点坐标显示（防止后续忘记，把文件都贴出来，方便复查）

资源库： WarehouseInputOrOutput.pro

QT += core gui
QT += charts

greaterThan(QT_MAJOR_VERSION, ): QT += widgets

TARGET = WarehouseInputOrOutput
TEMPLATE = app

DEFINES += QT_DEPRECATED_WARNINGS

SOURCES += main.cpp\
warehouseinputoroutput.cpp \
callout.cpp

HEADERS += warehouseinputoroutput.h \
callout.h

FORMS += warehouseinputoroutput.ui

头文件：WarehouseInputOrOutput.h

#ifndef WAREHOUSEINPUTOROUTPUT_H
#define WAREHOUSEINPUTOROUTPUT_H

#include
#include
#include

namespace Ui {
class WarehouseInputOrOutput;
}

class WarehouseInputOrOutput : public QMainWindow
{
Q_OBJECT

public:
explicit WarehouseInputOrOutput(QWidget *parent = );
~WarehouseInputOrOutput();
void initData();
QChart* setBarData();
QChart* setSeatterData();
QChart* setChartNature(QChart* chart);

private:
Ui::WarehouseInputOrOutput *ui;

};

#endif // WAREHOUSEINPUTOROUTPUT_H

定义：WarehouseInputOrOutput.cpp

#include "warehouseinputoroutput.h"
#include "ui_warehouseinputoroutput.h"
#include
#include
#include
#include
#include
#include

WarehouseInputOrOutput::WarehouseInputOrOutput(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::WarehouseInputOrOutput)
{

 ui->setupUi(this);

 initData();  

}

WarehouseInputOrOutput::~WarehouseInputOrOutput()
{
delete ui;
}

QChart* WarehouseInputOrOutput::setChartNature(QChart* chart)
{

 chart->setTheme(QChart::ChartThemeLight); // 设置白色主题  
 chart->setDropShadowEnabled(true); // 背景阴影  

// chart->addSeries(series); // 数据关联
chart->setTitleBrush(QBrush(QColor(, , ))); // 设置标题Brush
chart->setTitleFont(QFont("宋体")); // 设置标题字体

 chart->legend()->setVisible(true);  
 chart->legend()->setAlignment(Qt::AlignBottom);  // 对齐方式：底部对齐  
 chart->legend()->setBackgroundVisible(true);     //  设置背景 可见  
 chart->legend()->setAutoFillBackground(true);    // 自动填充背景  
 chart->legend()->setColor(QColor(, , ));  
 chart->legend()->setLabelColor(QColor(, , ));  

// chart->legend()->setMaximumHeight(50); // 设置高度
// chart->legend()->hide();

 return chart;  

}

QChart* WarehouseInputOrOutput::setBarData()
{
QChart* barChart = new QChart();
QBarSet* set0 = new QBarSet("入库数");
QBarSet* set1 = new QBarSet("出库数");
QBarSet* set2 = new QBarSet("存量数");
int maxXCount = ;
int maxYCount = ;

 // testData  
 QMap<int, int> barData;  
 for(int i = ; i < ; ++i)  
 {  
     barData\[i\] = i \*  + ;  
 }  
 for(int i = ; i < ;++i)  
 {  
     set0->append(barData\[i\]);  
     set1->append(barData\[ - i\]);  
 }  
 for(int i = ; i < maxXCount; ++ i)  
 {  
     set2->append(i \* );  
 }  
 set0->setLabelColor(Qt::black);  
 set1->setLabelColor(Qt::red);  
 set2->setLabelColor(Qt::cyan);

 QBarSeries\* series = new QBarSeries();  
 series->append(set0);  
 series->append(set1);  
 series->append(set2);  
 series->setVisible(true);  
 series->setLabelsVisible(true);  
 // 柱状图数字显示在最上方  
 series->setLabelsPosition(QAbstractBarSeries::LabelsInsideBase);

 setChartNature(barChart);  
 barChart->addSeries(series);  
 barChart->setTitle("出入库统计");

 QCategoryAxis\*  axisX = new QCategoryAxis();  
 axisX->setStartValue(-0.5);  
 for(int i = ; i < maxXCount + ; ++ i)  
     axisX->append("物料" + QString::number(i), i - 0.5);

 QValueAxis \*axisY = new QValueAxis;  
 axisY->setRange(, maxYCount);   //改为setRange(0,1);则表示坐标为动态计算大小的  
 axisY->setTitleText("数量");  
 axisY->setLabelFormat("%d");

 barChart->setAxisX(axisX, series);  
 barChart->setAxisY(axisY, series);  
 series->attachAxis(axisX);  
 series->attachAxis(axisY);

 return barChart;  

}

QChart* WarehouseInputOrOutput::setSeatterData()
{
QChart* seatterChart = new QChart();
int maxXCount = ;
int maxYCount = ;
setChartNature(seatterChart);
seatterChart->setTitle("存量数");

 QCategoryAxis\* axisX = new QCategoryAxis();  

// axisX->setMin(0);
axisX->setMax(maxXCount);
axisX->setStartValue();
for(int i = ; i < maxXCount + ; ++ i) axisX->append("timer" + QString::number(i), i);

 QValueAxis\* axisY = new QValueAxis();  
 axisY->setRange(, maxYCount);  
 axisY->setTitleText("存量");  
 axisY->setLabelFormat("%d");  
 QScatterSeries\* seatter = new QScatterSeries();  
 for(int i = ;i < maxXCount + ; ++i)  
     seatter->append(i - 0.5, i \* );  
 seatter->setPen(QPen(Qt::NoPen));  
 seatter->setColor(QColor(, , ));  
 // 设置散点大小  
 seatter->setMarkerSize();  
 // 设置散点样式  

// seatter->setMarkerShape(QScatterSeries::MarkerShapeRectangle);
seatter->setName("存量");
// 显示设定点的坐标值
seatter->setPointLabelsFormat("(@xPoint, @yPoint)");
seatter->setPointLabelsVisible(true);

 seatterChart->addSeries(seatter);

seatter->attachAxis(axisX); seatter->attachAxis(axisY); seatterChart->setAxisX(axisX, seatter); seatterChart->setAxisY(axisY, seatter); return seatterChart; } void WarehouseInputOrOutput::initData() { QChart* barChart = new QChart(); barChart = setBarData(); QChartView* showChart = new QChartView(barChart); QChart* seatterChart = new QChart(); seatterChart = setSeatterData(); QChartView* showSeatter = new QChartView(seatterChart); QGridLayout* gridLayout = new QGridLayout(); gridLayout->addWidget(showSeatter, , ); gridLayout->addWidget(showChart, , ); resize(, ); ui->centralWidget->setLayout(gridLayout); return; }

mian.cpp

#include "warehouseinputoroutput.h"
#include

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
WarehouseInputOrOutput w;
w.show();

 return a.exec();  

}

补充个更新的函数，以便后续自查

// 更新坐标轴和数据
void WarehouseInputOrOutput::updateShow()
{
qDebug() << "enter the updateShow";
// 需计算的前置参数
int maxXCount = ; // x轴分割为几块
int maxYCount = ; // 出入库的浮动上限（传参时加10%方便显示）
int maxSeaterY = ; // 实际存量的上限（传参时加20%方便显示坐标）

 QBarSet\* set0 = new QBarSet("入库数");  
 QBarSet\* set1 = new QBarSet("出库数");  
 set0->setLabelColor(Qt::black);  
 set1->setLabelColor(Qt::red);

 int i = ;  
 QMap<QString, int>::const\_iterator inIt;  
 QMap<QString, int>::const\_iterator outIt;  
 for(inIt = m\_InputSum.begin(), outIt = m\_OutputSum.begin();i < maxXCount && inIt != m\_InputSum.end() && outIt != m\_OutputSum.end();++inIt, ++ outIt)  
 {  
     set0->append(inIt.value());  
     set1->append(outIt.value());  
     ++i;  
 }

 // 出库数、入库数、存量数、日期  
 for(int i = ; i < maxXCount; ++i)  
 {  
     m\_OutputSum\["物料" + QString::number(i)\] = i \* ;  
     m\_InputSum\["物料" + QString::number(i)\] = i \* ;  
     m\_StockSum\["物料" + QString::number(i)\] = i \* ;  
 }  
 m\_date = QDateTime::currentDateTime().toString("yyyy/MM/dd");

 m\_barChart->removeAllSeries();  
 QBarSeries\* newSeries = new QBarSeries();  
 newSeries->append(set0);  
 newSeries->append(set1);  
 newSeries->setVisible(true);  
 newSeries->setLabelsVisible(true);  
 // 柱状图数字显示在最上方  
 newSeries->setLabelsPosition(QAbstractBarSeries::LabelsInsideBase);  
 m\_barChart->addSeries(newSeries);

 // 移除原有数据，后续更新数据（update动作必须先移除原数据）  
 m\_barChart->removeAxis(m\_barChart->axisX());  
 m\_barChart->removeAxis(m\_barChart->axisY());

 QCategoryAxis\*  axisX = new QCategoryAxis();  
 axisX->setStartValue(-0.5);  
 i = ;  // 辅助位置  
 for(inIt = m\_InputSum.begin(); inIt != m\_InputSum.end() && i < maxXCount;++inIt)  
     axisX->append(inIt.key(), i++ - 0.5);

 QValueAxis \*axisY = new QValueAxis;  
 axisY->setRange(, maxYCount \* 1.1);  
 axisY->setTitleText("数量");  
 axisY->setLabelFormat("%d");  
 m\_barChart->setAxisX(axisX, newSeries);  
 m\_barChart->setAxisY(axisY, newSeries);  
 // 数据匹配坐标轴  
 newSeries->attachAxis(axisX);  
 newSeries->attachAxis(axisY);

 // 更新散点图数据  
 QScatterSeries\* newSeatter = new QScatterSeries();  
 for(int i = ;i < maxXCount + ; ++i)  
     newSeatter->append(i - 0.5, i \* );  
 // 设置散点大小  
 newSeatter->setMarkerSize();  
 newSeatter->setName("存量");  
 // 显示设定点的值  
 newSeatter->setPointLabelsFormat("@yPoint");  
 newSeatter->setPointLabelsVisible(true);  
 m\_seatterChart->removeAllSeries();  
 m\_seatterChart->addSeries(newSeatter);

 QCategoryAxis\* seatterAxisX = new QCategoryAxis();\\  
 seatterAxisX->setMax(1.1\*maxXCount);  
 seatterAxisX->setStartValue();  
 QMap<QString, int>::const\_iterator stockIt;  
 int i = ;  
 for(stockIt = m\_StockSum.begin();stockIt != m\_StockSum.end();++stockIt)  
     seatterAxisX->append(stockIt.key(), i++);

 QValueAxis\* seatterAxisY = new QValueAxis();  
 seatterAxisY->setRange(, 1.2\*maxYCount);  
 seatterAxisY->setTitleText("存量");  
 seatterAxisY->setLabelFormat("%d");  
 // 移除原有数据，添加新数据（update动作必须先移除原数据）  
 m\_seatterChart->removeAxis(m\_seatterChart->axisX());  
 m\_seatterChart->removeAxis(m\_seatterChart->axisY());  
 m\_seatterChart->addAxis(seatterAxisX, newSeatter);  
 m\_seatterChart->addAxis(seatterAxisY, newSeatter);

 // 数据匹配坐标轴  
 newSeatter->attachAxis(m\_seatterChart->axisX());  
 newSeatter->attachAxis(m\_seatterChart->axisY());

 update();  

}

 seatterChart->addSeries(seatter);