目錄
1.簡介
本文主要介紹了在QTableWidget表格中如何添加右鍵菜單功能及相關重點講解,並有動態效果圖展示方便用於查看實際效果功能。
回目錄
2.效果圖
3.重點講解
1.)通過UI設計器選中控件添加右鍵菜單的槽函數。
操作方式如下圖所示 :
右鍵添加“右鍵菜單”槽函數
2) 增加右鍵菜單槽函數增加菜單相關處理邏輯;
3) 構造函數中需添加以下語句,使能待增加右鍵菜單功能的控件,否則在控件上無法彈出右鍵菜單;
ui->tableWidget->setContextMenuPolicy(Qt::CustomContextMenu);
4.源碼
widget.h
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
namespace Ui {
class Widget;
}
class QTableWidget;
class Widget : public QWidget
{
Q_OBJECT
public:
explicit Widget(QWidget *parent = nullptr);
~Widget();
private slots:
void on_tableWidget_customContextMenuRequested(const QPoint &pos);
void on_tableWidget_2_customContextMenuRequested(const QPoint &pos);
private:
void initForm(QTableWidget* tabWdg);
private:
Ui::Widget *ui;
};
#endif // WIDGET_H
widget.cpp
#include "widget.h"
#include "ui_widget.h"
#include <QMenu>
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
initForm(ui->tableWidget);
initForm(ui->tableWidget_2);
ui->tableWidget->setContextMenuPolicy(Qt::CustomContextMenu);
ui->tableWidget_2->setContextMenuPolicy(Qt::CustomContextMenu);
this->setWindowTitle("QTableWidgetContextMenu");
}
Widget::~Widget()
{
delete ui;
}
void Widget::initForm(QTableWidget* tabWdg)
{
int nRowCount = 5;
int nColCount = 3;
tabWdg->setRowCount(nRowCount);
tabWdg->setColumnCount(nColCount);
for(int row=0; row<nRowCount; row++){
for(int col=0; col<nColCount; col++){
QString text = QString("%1%2").arg(row+1).arg(col+1);
QTableWidgetItem *it = new QTableWidgetItem(text);
tabWdg->setItem(row, col, it);
}
}
}
void Widget::on_tableWidget_customContextMenuRequested(const QPoint &pos)
{
QMenu menu;
QAction *selectAll = menu.addAction(tr("全選"));
menu.addSeparator();
QAction *clear = menu.addAction(tr("清空內容"));
menu.addSeparator();
QAction *init = menu.addAction(tr("初始化表格"));
connect(selectAll, &QAction::triggered, [=](){
ui->tableWidget->selectAll();
});
connect(clear, &QAction::triggered, [=](){
ui->tableWidget->clear();
});
connect(init, &QAction::triggered, [=](){
initForm(ui->tableWidget);
});
menu.exec(QCursor::pos());
}
void Widget::on_tableWidget_2_customContextMenuRequested(const QPoint &pos)
{
QMenu menu;
QAction *selectAll = menu.addAction(tr("全選"));
menu.addSeparator();
QAction *clear = menu.addAction(tr("清空內容"));
menu.addSeparator();
QAction *init = menu.addAction(tr("初始化表格"));
connect(selectAll, &QAction::triggered, [=](){
ui->tableWidget_2->selectAll();
});
connect(clear, &QAction::triggered, [=](){
ui->tableWidget_2->clear();
});
connect(init, &QAction::triggered, [=](){
initForm(ui->tableWidget_2);
});
menu.exec(QCursor::pos());
}
加油,向未來!GO~
Come on!