解决嵌入式中QTableWidget双击出现空白QTableWidgetItem输入

所说BUG现象

在这里插入图片描述

解决

在空白的单元格中，添加不可编辑的QTableWidgetItem

方式1不用遍历，在ItemMaxNum处开始添加
方式2遍历，在空白的单元格处开始添加

方式1

主要内容

 //如果QTableWidgetItem个数不是3的倍数，最后一行没有满，布局会自动补充一个空白控件，多次点击才能出现
if(ItemMaxNum%Column!=0&&(i+1)==ItemMaxNum)
{// 设置空白项的文本为 ""for(int k = (ItemMaxNum%Column); k < table->columnCount(); k++) {QTableWidgetItem* item = new QTableWidgetItem("");item->setFlags(item->flags() ^ Qt::ItemIsEditable);table->setItem(table->rowCount() - 1, k, item);}
}

方式2

主要内容

if(ItemMaxNum!=Row*Column)
{for (int row = 0; row < Row; row++) {for (int col = 0; col < Column; ++col) {auto item = table->cellWidget(row,col); //灵活变通：table->item(int row, int column)if(item==nullptr){QTableWidgetItem* items = new QTableWidgetItem("");items->setFlags(items->flags() ^ Qt::ItemIsEditable);table->setItem(row, col, items);}}}
}

全部内容


#include "testbug.h"
#define Column 3
#define Row 6
#define ItemMaxNum 16
TestBug::TestBug(QWidget *parent): QWidget(parent)
{//窗口将始终显示在其他窗口之上this->setWindowFlags(Qt::Window | Qt::WindowStaysOnTopHint);this->setFixedSize(800,600);QTableWidget *table = new QTableWidget;table->horizontalHeader()->hide();table->verticalHeader()->hide();table->horizontalHeader()->setStretchLastSection(true);table->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);table->verticalHeader()->setSectionResizeMode(QHeaderView::Stretch);table->setFocusPolicy(Qt::NoFocus); // 去除选中虚线table->setSelectionMode(QAbstractItemView::NoSelection);table->setStyleSheet("QTableWidget{gridline-color:white;background:DeepSkyBlue; border:0px solid #ffffff;border-bottom-width:0px;border-right-width:0px;}");table->setColumnCount(Column);table->setRowCount(Row);table->setShowGrid(false);QHBoxLayout *hboxLayout = new QHBoxLayout(this);hboxLayout->addWidget(table);int row =0,col=0;for (int i = 0; i < ItemMaxNum; i++) {col = i;if (col >= Column){if (col % Column == 0){row++;}col %= Column;}QString style = QString("QPushButton[status=\"1\"]{font-size:28px;background-color:transparent;color:rgb(255,255,255);border-radius:10;border:2px solid white;}""QPushButton[status=\"2\"]{background-color:rgb(255,255,255);font-size:28px;color:#06411B;border-radius:10;border:2px solid white;}");QWidget *pbtnWidget = new QWidget;QHBoxLayout *pbtnLayout = new QHBoxLayout;QPushButton *pBtn = new QPushButton(QString::fromLocal8Bit("[%1]号").arg(i), pbtnWidget);pbtnLayout->addWidget(pBtn);pbtnWidget->setLayout(pbtnLayout);pBtn->setFixedSize(QSize(185, 50));pBtn->setProperty("status", "2");pBtn->setStyleSheet(style);pBtn->setFocusPolicy(Qt::NoFocus);pBtn->setObjectName(QString::number(i));table->setCellWidget(row, col, pbtnWidget);//如果QTableWidgetItem个数不是3的倍数，最后一行没有满，布局会自动补充一个空白控件，多次点击才能出现
#if 0// 方式1if(ItemMaxNum%Column!=0&&(i+1)==ItemMaxNum){// 设置空白项的文本为 ""for(int k = (ItemMaxNum%Column); k < table->columnCount(); k++) {QTableWidgetItem* item = new QTableWidgetItem("");item->setFlags(item->flags() ^ Qt::ItemIsEditable);table->setItem(table->rowCount() - 1, k, item);}}
#endifconnect(pBtn, SIGNAL(clicked()), this, SLOT(onBtnClick()));}//方式2if(ItemMaxNum!=Row*Column){for (int row = 0; row < Row; row++) {for (int col = 0; col < Column; ++col) {auto item = table->cellWidget(row,col); //灵活变通：table->item(int row, int column)if(item==nullptr){QTableWidgetItem* items = new QTableWidgetItem("");items->setFlags(items->flags() ^ Qt::ItemIsEditable);table->setItem(row, col, items);}}}}
}TestBug::~TestBug()
{
}void TestBug::onBtnClick()
{QPushButton *pBtn = qobject_cast<QPushButton *>(QObject::sender());if (pBtn!=nullptr){qDebug()<<pBtn->text()<<" ObjectName ="<<pBtn->objectName();if (1 == pBtn->property("status").toInt())pBtn->setProperty("status", "2");elsepBtn->setProperty("status", "1");pBtn->setStyleSheet(pBtn->styleSheet());}
}