QT 支持多客户端链接TCP服务器，外带数据库连接池

#include "quiwidget.h" QUIWidget::QUIWidget(QWidget *parent) : QDialog(parent) { this->initControl(); this->initForm(); } QUIWidget::~QUIWidget() { delete widgetMain; } bool QUIWidget::eventFilter(QObject *obj, QEvent *evt) { static QPoint mousePoint; static bool mousePressed = false; QMouseEvent *event = static_cast<QMouseEvent *>(evt); if (event->type() == QEvent::MouseButtonPress) { if (event->button() == Qt::LeftButton) { mousePressed = true; mousePoint = event->globalPos() - this->pos(); return true; } } else if (event->type() == QEvent::MouseButtonRelease) { mousePressed = false; return true; } else if (event->type() == QEvent::MouseMove) { if (mousePressed && (event->buttons() && Qt::LeftButton)) { this->move(event->globalPos() - mousePoint); return true; } } else if (event->type() == QEvent::MouseButtonDblClick) { //以下写法可以将双击识别限定在标题栏 //if (this->btnMenu_Max->isVisible() && obj == this->widgetTitle) { if (this->btnMenu_Max->isVisible()) { this->on_btnMenu_Max_clicked(); return true; } } return QWidget::eventFilter(obj, evt); } QLabel *QUIWidget::getLabIco() const { return this->labIco; } QLabel *QUIWidget::getLabTitle() const { return this->labTitle; } QToolButton *QUIWidget::getBtnMenu() const { return this->btnMenu; } QPushButton *QUIWidget::getBtnMenuMin() const { return this->btnMenu_Min; } QPushButton *QUIWidget::getBtnMenuMax() const { return this->btnMenu_Max; } QPushButton *QUIWidget::getBtnMenuMClose() const { return this->btnMenu_Close; } QString QUIWidget::getTitle() const { return this->title; } Qt::Alignment QUIWidget::getAlignment() const { return this->alignment; } QSize QUIWidget::sizeHint() const { return QSize(600, 450); } QSize QUIWidget::minimumSizeHint() const { return QSize(200, 150); } void QUIWidget::initControl() { this->setObjectName(QString::fromUtf8("QUIWidget")); this->resize(900, 750); verticalLayout1 = new QVBoxLayout(this); verticalLayout1->setSpacing(0); verticalLayout1->setContentsMargins(11, 11, 11, 11); verticalLayout1->setObjectName(QString::fromUtf8("verticalLayout1")); verticalLayout1->setContentsMargins(1, 1, 1, 1); widgetMain = new QWidget(this); widgetMain->setObjectName(QString::fromUtf8("widgetMain")); verticalLayout2 = new QVBoxLayout(widgetMain); verticalLayout2->setSpacing(0); verticalLayout2->setContentsMargins(11, 11, 11, 11); verticalLayout2->setObjectName(QString::fromUtf8("verticalLayout2")); verticalLayout2->setContentsMargins(0, 0, 0, 0); widgetTitle = new QWidget(widgetMain); widgetTitle->setObjectName(QString::fromUtf8("widgetTitle")); QSizePolicy sizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed); sizePolicy.setHorizontalStretch(0); sizePolicy.setVerticalStretch(0); sizePolicy.setHeightForWidth(widgetTitle->sizePolicy().hasHeightForWidth()); widgetTitle->setSizePolicy(sizePolicy); widgetTitle->setMinimumSize(QSize(0, 30)); horizontalLayout4 = new QHBoxLayout(widgetTitle); horizontalLayout4->setSpacing(0); horizontalLayout4->setContentsMargins(11, 11, 11, 11); horizontalLayout4->setObjectName(QString::fromUtf8("horizontalLayout4")); horizontalLayout4->setContentsMargins(0, 0, 0, 0); labIco = new QLabel(widgetTitle); labIco->setObjectName(QString::fromUtf8("labIco")); QSizePolicy sizePolicy1(QSizePolicy::Minimum, QSizePolicy::Preferred); sizePolicy1.setHorizontalStretch(0); sizePolicy1.setVerticalStretch(0); sizePolicy1.setHeightForWidth(labIco->sizePolicy().hasHeightForWidth()); labIco->setSizePolicy(sizePolicy1); labIco->setMinimumSize(QSize(30, 0)); labIco->setAlignment(Qt::AlignCenter); horizontalLayout4->addWidget(labIco); labTitle = new QLabel(widgetTitle); labTitle->setObjectName(QString::fromUtf8("labTitle")); QSizePolicy sizePolicy2(QSizePolicy::Expanding, QSizePolicy::Preferred); sizePolicy2.setHorizontalStretch(0); sizePolicy2.setVerticalStretch(0); sizePolicy2.setHeightForWidth(labTitle->sizePolicy().hasHeightForWidth()); labTitle->setSizePolicy(sizePolicy2); labTitle->setAlignment(Qt::AlignLeading | Qt::AlignLeft | Qt::AlignVCenter); horizontalLayout4->addWidget(labTitle); widgetMenu = new QWidget(widgetTitle); widgetMenu->setObjectName(QString::fromUtf8("widgetMenu")); sizePolicy1.setHeightForWidth(widgetMenu->sizePolicy().hasHeightForWidth()); widgetMenu->setSizePolicy(sizePolicy1); horizontalLayout = new QHBoxLayout(widgetMenu); horizontalLayout->setSpacing(0); horizontalLayout->setContentsMargins(11, 11, 11, 11); horizontalLayout->setObjectName(QString::fromUtf8("horizontalLayout")); horizontalLayout->setContentsMargins(0, 0, 0, 0); btnMenu = new QToolButton(widgetMenu); btnMenu->setObjectName(QString::fromUtf8("btnMenu")); QSizePolicy sizePolicy3(QSizePolicy::Fixed, QSizePolicy::Expanding); sizePolicy3.setHorizontalStretch(0); sizePolicy3.setVerticalStretch(0); sizePolicy3.setHeightForWidth(btnMenu->sizePolicy().hasHeightForWidth()); btnMenu->setSizePolicy(sizePolicy3); btnMenu->setMinimumSize(QSize(30, 0)); btnMenu->setMaximumSize(QSize(30, 16777215)); btnMenu->setFocusPolicy(Qt::NoFocus); btnMenu->setPopupMode(QToolButton::InstantPopup); horizontalLayout->addWidget(btnMenu); btnMenu_Min = new QPushButton(widgetMenu); btnMenu_Min->setObjectName(QString::fromUtf8("btnMenu_Min")); QSizePolicy sizePolicy4(QSizePolicy::Minimum, QSizePolicy::Expanding); sizePolicy4.setHorizontalStretch(0); sizePolicy4.setVerticalStretch(0); sizePolicy4.setHeightForWidth(btnMenu_Min->sizePolicy().hasHeightForWidth()); btnMenu_Min->setSizePolicy(sizePolicy4); btnMenu_Min->setMinimumSize(QSize(30, 0)); btnMenu_Min->setMaximumSize(QSize(30, 16777215)); btnMenu_Min->setCursor(QCursor(Qt::ArrowCursor)); btnMenu_Min->setFocusPolicy(Qt::NoFocus); horizontalLayout->addWidget(btnMenu_Min); btnMenu_Max = new QPushButton(widgetMenu); btnMenu_Max->setObjectName(QString::fromUtf8("btnMenu_Max")); sizePolicy3.setHeightForWidth(btnMenu_Max->sizePolicy().hasHeightForWidth()); btnMenu_Max->setSizePolicy(sizePolicy3); btnMenu_Max->setMinimumSize(QSize(30, 0)); btnMenu_Max->setMaximumSize(QSize(30, 16777215)); btnMenu_Max->setCursor(QCursor(Qt::ArrowCursor)); btnMenu_Max->setFocusPolicy(Qt::NoFocus); horizontalLayout->addWidget(btnMenu_Max); btnMenu_Close = new QPushButton(widgetMenu); btnMenu_Close->setObjectName(QString::fromUtf8("btnMenu_Close")); sizePolicy3.setHeightForWidth(btnMenu_Close->sizePolicy().hasHeightForWidth()); btnMenu_Close->setSizePolicy(sizePolicy3); btnMenu_Close->setMinimumSize(QSize(30, 0)); btnMenu_Close->setMaximumSize(QSize(30, 16777215)); btnMenu_Close->setCursor(QCursor(Qt::ArrowCursor)); btnMenu_Close->setFocusPolicy(Qt::NoFocus); horizontalLayout->addWidget(btnMenu_Close); horizontalLayout4->addWidget(widgetMenu); verticalLayout2->addWidget(widgetTitle); widget = new QWidget(widgetMain); widget->setObjectName(QString::fromUtf8("widget")); verticalLayout3 = new QVBoxLayout(widget); verticalLayout3->setSpacing(0); verticalLayout3->setContentsMargins(11, 11, 11, 11); verticalLayout3->setObjectName(QString::fromUtf8("verticalLayout3")); verticalLayout3->setContentsMargins(0, 0, 0, 0); verticalLayout2->addWidget(widget); verticalLayo