http模块有问题，需要修改

core_form/frmimgshow/frmimgshow.cpp

@@ -0,0 +1,92 @@
+#include "frmimgshow.h"
+
+FrmImgShow::FrmImgShow(QString& url, QWidget *parent) : QWidget(parent)
+{
+    initForm();
+    initForm();
+    initManager();
+    this->url = url;
+    manager->get(QNetworkRequest(QUrl(url)));
+}
+
+bool FrmImgShow::eventFilter(QObject *watched, QEvent *event)
+{
+    if (watched == btnCopy) {
+        if (event->type() == QEvent::Enter) {
+            btnCopy->setIcon(QIcon(QPixmap(":/qrc/image/copy_blue.png")));
+            return true;
+        }
+        else if (event->type() == QEvent::Leave) {
+            btnCopy->setIcon(QIcon(QPixmap(":/qrc/image/copy_white.png")));
+            return true;
+        }
+        else {
+            return false;
+        }
+    }
+
+    if (watched == btnDelete) {
+        if (event->type() == QEvent::Enter) {
+            btnDelete->setIcon(QIcon(QPixmap(":/qrc/image/delete_red.png")));
+            return true;
+        }
+        else if (event->type() == QEvent::Leave) {
+            btnDelete->setIcon(QIcon(QPixmap(":/qrc/image/delete_white.png")));
+            return true;
+        }
+        else {
+            return false;
+        }
+    }
+
+    return QWidget::eventFilter(watched, event);
+}
+
+void FrmImgShow::onFinished(QNetworkReply *reply)
+{
+    if (reply->error() == QNetworkReply::NoError) {
+        QByteArray imageData = reply->readAll();
+        QPixmap pix;
+        pix.loadFromData(imageData);
+        this->labImg->setPixmap(pix);
+    }
+}
+
+void FrmImgShow::initForm()
+{
+    labImg = new QLabel();
+    btnCopy = new QToolButton();
+    btnDelete = new QToolButton();
+    horizenSpacer = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
+    hLayout = new QHBoxLayout();
+    vLayout = new QVBoxLayout();
+
+    hLayout->addWidget(btnCopy);
+    hLayout->addSpacerItem(horizenSpacer);
+    vLayout->addWidget(labImg);
+    vLayout->addLayout(hLayout);
+    this->setLayout(vLayout);
+
+    btnCopy->setIcon(QIcon(QPixmap(":/qrc/image/copy_white.png")));
+    btnDelete->setIcon(QIcon(QPixmap(":/qrc/image/delete_white.png")));
+    btnCopy->setFixedSize(32, 32);
+    btnCopy->setCursor(Qt::PointingHandCursor);
+}
+
+void FrmImgShow::initWidget()
+{
+    btnCopy->installEventFilter(this);
+    btnDelete->installEventFilter(this);
+}
+
+void FrmImgShow::initManager()
+{
+    manager = new QNetworkAccessManager();
+    QClipboard* clipboard = QGuiApplication::clipboard();
+    connect(manager, &QNetworkAccessManager::finished,
+            this, &FrmImgShow::onFinished);
+
+    connect(btnCopy, &QToolButton::clicked, [&](){
+        clipboard->setText(this->url);
+    });
+}

core_form/frmimgshow/frmimgshow.h

@@ -0,0 +1,50 @@
+#ifndef FRMIMGSHOW_H
+#define FRMIMGSHOW_H
+
+#include <QWidget>
+#include <QPushButton>
+#include <QLabel>
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+#include <QToolButton>
+#include <QSpacerItem>
+#include <QNetworkAccessManager>
+#include <QNetworkRequest>
+#include <QUrl>
+#include <QNetworkReply>
+#include <QClipboard>
+#include <QGuiApplication>
+
+class FrmImgShow : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit FrmImgShow(QString& url, QWidget *parent = nullptr);
+
+private:
+    QLabel* labImg;
+    QToolButton* btnCopy;
+    QToolButton* btnDelete;
+    QSpacerItem* horizenSpacer;
+    QHBoxLayout* hLayout;
+    QVBoxLayout* vLayout;
+
+    QNetworkAccessManager* manager;
+    QString url;
+
+protected:
+    virtual bool eventFilter(QObject* watched, QEvent* event);
+
+private slots:
+    void onFinished(QNetworkReply *reply);
+
+private:
+    void initForm();
+    void initWidget();
+    void initManager();
+
+signals:
+
+};
+
+#endif // FRMIMGSHOW_H

core_form/frmimgshow/frmimgshow.pri

@@ -0,0 +1,5 @@
+HEADERS += \
+    $$PWD/frmimgshow.h
+
+SOURCES += \
+    $$PWD/frmimgshow.cpp