Qt——改进table程序一

来源：互联网发布：集团数据整合方案编辑：程序博客网时间：2024/05/30 23:10

不再是所有函数都在一个类里，在改进版中，将原先的一堆命令分为两个大的函数clear()和readData()，再分别调用这两个函数即可

#include "tablewidget.h" #include <QtWidgets>//#include <QFile>//#include <vector>#include<iostream>#include <fstream>int x=1;int y=20;int location = (x-1)*355+y;double imageData[85425][33];TableWidget::TableWidget(){readData();clear();}void TableWidget::clear(){         table = new QTableWidget(this);         table->setColumnCount(56);         table->setRowCount(60);table->resize(1366,200);        QStringList headers;         headers <<"400nm"<<"410nm"<<"420nm"<<"430nm"<<"440nm"<<"450nm"<<"460nm"<<"470nm"<<"480nm"<<"490nm"    <<"500nm"<<"510nm"<<"520nm"<<"530nm"<<"540nm"<<"550nm"<<"560nm"<<"570nm"<<"580nm"<<"590nm"<<"600nm"<<"610nm"<<"620nm"<<"630nm"<<"640nm"<<"650nm"<<"660nm"<<"670nm"<<"680nm"<<"690nm"<<"700nm"<<"710nm"<<"720nm"<<"730nm"<<"740nm"<<"750nm"<<"760nm"<<"770nm"<<"780nm"<<"790nm"<<"800nm"<<"810nm"<<"820nm"<<"830nm"<<"840nm"<<"850nm"<<"860nm"<<"870nm"<<"880nm"<<"890nm"<<"900nm"<<"910nm"<<"920nm"<<"930nm"<<"940nm"<<"950nm";        table->setHorizontalHeaderLabels(headers); //设置行标题，列标题不用设置，会自动排序for (int column = 0; column < 33; ++column)   {  QTableWidgetItem *item0;  item0 = new QTableWidgetItem;  double m=imageData[location][column];QString txt = QString("%1").arg(m);  //把数字十进制地转换成string型item0->setText(txt);  table->setItem( 0 , column , item0);  //把txt内容填进表格里      } }void TableWidget::readData()//读入一张图的数据       {std::ifstream fin;fin.open("Imagedata.txt");if (fin.fail()){std::cout << "File open error!";int m;std::cin >> m;}else{for (int i = 0; i < 85425; i++){for (int j = 0; j < 33; j++){fin >> imageData[i][j];}}fin.close();}}

另外，需要注意的是，如果把imageData定义成头文件中类的私有项，会因栈溢出而导致调试中断。中断停留在语句“

test dword ptr [eax],eax ; probe page

”处，解决方法1.减小申请空间的大小 2.大栈空间的大小方法为：项目->属性->链接器->系统->堆栈保留大小

【注】：这里填的是字节数，如果你想把他扩大为2M的话，1024*1024*2 = 2097152

我这里就直接把它声明放在cpp文件里了。

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