QT中QTableWidget清空或删除内容功能

今天使用到了QT中QTableWidget的清空和删除功能，特地整理出。

参考https://blog.youkuaiyun.com/qq_16093323/article/details/79226349

如下：

1、void QTableWidget::clear() [slot]  

Removes all items in the view. This will also remove all selections and headers.

//清空表格中所有内容（包含表头）。

2、void QTableWidget::clearContents() [slot]

Removes all items not in the headers from the view. This will also remove all selections. The table dimensions stay the same.//清空表格中的内容（不包含表头）。

3、void QTableWidget::removeCellWidget(int row, int column) 

//删除表格中的某行中的某列内容。
 Removes the widget set on the cell indicated by row and column.

4、void QTableWidget::removeColumn(int column) [slot] 

//删除表格中的某列内容。
 Removes the column column and all its items from the table.

5、void QTableWidget::removeRow(int row) [slot]

 //删除表格中的某行内容。
 Removes the row row and all its items from the table

6、QTableWidgetItem * QTableWidget::takeItem(int row, int column) 

//删除表格中的某行和某列
 Removes the item at row and column from the table without deleting it.

7、QTableWidgetItem * QTableWidget::takeHorizontalHeaderItem(int column)

 //删除表格中的水平标题头
 Removes the horizontal header item at column from the header without deleting it.

8、QTableWidgetItem * QTableWidget::takeVerticalHeaderItem(int row) 

//删除表格中的垂直标题头
 Removes the vertical header item at row from the header without deleting it.