从Qt中的文本文件填充表格小部件 [英] Populating Table Widget from Text File in Qt

问题描述

我是Qt的新手，并且需要以下帮助:

I'm new to Qt and need some help with the following:

我想创建一个包含Table Widget的GUI，该Widget由来自制表符分隔的文本文件的信息填充.在我的GUI中，用户将首先浏览文本文件，然后在Table Widget中显示内容.我已经完成了浏览部分，但是如何将数据从文本文件加载到Table Widget中?

I would like to create a GUI containing a Table Widget that is populated by information coming from a tab delimited text file. In my GUI, the user would first browse for the text file and then it would then show the contents in the Table Widget. I've done the browse part, but how do I load the data from the text file into the Table Widget?

推荐答案

分两个步骤，分析文件，然后将其推送到小部件中.

It's two steps, parse the file, and then push it into the widget.

我从 QFile文档中抓取了这些行. /p>

I grabbed these lines from the QFile documentation.

 QFile file("in.txt");
 if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
     return;

 while (!file.atEnd()) {
     QByteArray line = file.readLine();
     process_line(line);
 }

您的process_line函数应如下所示:

Your process_line function should look like this:

static int row = 0;
QStringList ss = line.split('\t');

if(ui->tableWidget->rowCount() < row + 1)
    ui->tableWidget->setRowCount(row + 1);
if(ui->tableWidget->columnCount() < ss.size())
    ui->tableWidget->setColumnCount( ss.size() );

for( int column = 0; column < ss.size(); column++)
{
    QTableWidgetItem *newItem = new QTableWidgetItem( ss.at(column) );
    ui->tableWidget->setItem(row, column, newItem);
}

row++;

有关操纵QTableWidget的更多信息，请查看文档.对于在Qt Creator中使用GUI构建器的新用户，一开始要弄清楚它很棘手.

For more information about manipulating QTableWidgets, check the documentation. For new users using the GUI builder in Qt Creator, it is tricky figuring it out at first.

最终，我建议改用他们在所有

Eventually I would recommend to switching to building the GUI the way they do in all their examples... by adding everything by hand in the code instead of dragging and dropping.

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