一、系统设置槽-信号
- 在QtCreator中建立槽信号事件
槽的建立(添加Button)
注意：我们的文件
ui_zbtx.h是编译环境(VS及其插件QtCreator)产生的描述程序(类似QtCreator(Xcode)自动布局产生控件)
- 设置槽事件
//.h
public slots:
void on_btn_addpara_click();
void on_btn_delpara_click();
void on_btn_save_clicked();
- 设置信号事件
//.cpp
void zbtx::on_btn_addpara_click()
{
ParaSetting dlg;
if (dlg.exec() == QDialog::Accepted)
{
int row = ui.tbl_paras->rowCount();
ui.tbl_paras->insertRow(row);
QTableWidgetItem* it = new QTableWidgetItem;
//it->setText(dlg.name);
it->setText(dlg.sign);
ui.tbl_paras->setItem(row, 0, it);
it = new QTableWidgetItem;
//it->setText(dlg.typ == 1 ? tr("data") : tr("sub indicator"));
it->setText(dlg.typ == 1 ?QStringLiteral("数据") : QStringLiteral("子指标"));
it->setData(Qt::UserRole, dlg.typ);
ui.tbl_paras->setItem(row, 1, it);
it = new QTableWidgetItem;
it->setText(dlg.ch);
ui.tbl_paras->setItem(row, 2, it);
/*it = new QTableWidgetItem;
it->setText(QString::number(dlg.id));
ui.tbl_paras->setItem(row, 3, it);*/
}
}
void zbtx::on_btn_delpara_clicked(){
ui.tbl_paras->removeRow(ui.tbl_paras->currentRow());
}
槽信号事件
二、自定义槽信号事件
-
设置对应的槽信号事件
on_tree_zhibiao_customContextMenuRequested
on_tree_zhibiao_currentItemChanged
- 设置槽事件
//.h
public slots:
void on_tree_zhibiao_currentItemChanged(QTreeWidgetItem * current, QTreeWidgetItem * previous);//修改Tree Item
void on_btn_modify_zb_clicked();//应用
void on_tree_zhibiao_customContextMenuRequested(const QPoint & pos);//tree Item 右选择键 操作
- 设置信号事件
//.cpp
void zbtx::on_tree_zhibiao_customContextMenuRequested(const QPoint & pos)
{
QTreeWidgetItem * current = ui.tree_zhibiao->currentItem();
if (!current)
return;
int ntyp = current->data(0, Qt::UserRole).toInt();
QMenu menu;
if (ntyp == 0)//
{
//建立槽SLOT(add_zb_sub_level()) 【两次槽-信号的建立】
menu.addAction(QStringLiteral("添加子指标"), this, SLOT(add_zb_sub_level()));//添加子指标
menu.addAction(QStringLiteral("删除指标"), this, SLOT(delete_zb()));//删除指标
}
menu.exec(QCursor::pos());
}
void zbtx::add_zb_sub_level()
{
QTreeWidgetItem * current = ui.tree_zhibiao->currentItem();
if (!current)
return;
QTreeWidgetItem* it = new QTreeWidgetItem;
it->setText(0, QStringLiteral("添加子指标"));
it->setData(0, Qt::UserRole-1, g_zb_id++);//id
it->setData(0, Qt::UserRole, 0);//indicator
current->addChild(it);
current->setExpanded(true);
}
void zbtx::delete_zb()
{
QTreeWidgetItem * current = ui.tree_zhibiao->currentItem();
if (!current)
return;
if (!current->parent())
return;
ui.tree_zhibiao->clearSelection();
current->parent()->removeChild(current);
}
一、系统自定义槽信号[改]
在项目中，场景SceCreator.h中，我们的评估方案中
//.h
private:
void connectSlots(); //连接signals-slots
private slots:
void on_newEval_clicked(); //评估指标 新建方案
实现槽信号
//.cpp
void CSceCreator::connectSlots()
{
//评估方案管理
connect(ui.newEval, SIGNAL(clicked()), this, SLOT(on_newEval_clicked()));//注：ui.newEval 为QtCreator中 控件button的命名 name
}
实现槽函数
void CSceCreator::on_newEval_clicked()
{
m_zb_doc.clear();
m_evalIndDock->new_plan();
}
备注：
- 针对QLineEdit、QTextEidt等输入框 信息的保存
//弹出的属性设置对话框(QDialog)
void ParaSetting::accept()
{
typ = ui.comb_typ->currentIndex() + 1;
ch = ui.le_ch->text();
sign = ui.le_sign->text();
//name = ui.comb_para->currentText();
//id = ui.comb_para->itemData(ui.comb_para->currentIndex(), 0).toInt();
QDialog::accept();
}
- 关于每个控件对应的槽信号 怎么去区分与响应
//在QtCreator创建槽信号(Edit Signal/Slots)
//ui_zbtx.h
QObject::connect(btn_addpara, SIGNAL(clicked()), zbtx, SLOT(on_btn_addpara_click()));
QObject::connect(btn_delpara, SIGNAL(clicked()), zbtx, SLOT(on_btn_delpara_clicked()));
QObject::connect(btn_save, SIGNAL(clicked()), zbtx, SLOT(on_btn_save_clicked()));
QMetaObject::connectSlotsByName(zbtx);
