数据库驱动完成，预览窗口完成

widget.cpp

@@ -1,6 +1,7 @@
 #include "widget.h"
 #include "ui_widget.h"
 #include "tchttpservice.h"
+#include "urldatabase.h"
 
 Widget::Widget(QWidget *parent)
     : QWidget(parent)
@@ -11,6 +12,8 @@ Widget::Widget(QWidget *parent)
     initWidget();
     initSignalSlot();
     initTrayApp();
+    QString stdPath = QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation);
+    ImageManager::instance()->initialize(stdPath + "/picpanel.db");
     // this->btnPageUpload->setChecked(true);
     // this->btnPageUpload->setStyleSheet("{border: none;border-right: 4px solid #409EFF;color: #409EFF;}");
 }
@@ -205,6 +208,7 @@ void Widget::initSignalSlot()
 
     connect(TCHttpService::getInstance(), &TCHttpService::signal_loginSuc, this, &Widget::slot_loginSec);
     connect(frmupload, &FrmUpload::signal_uploadSuccess, this, &Widget::slot_uploadSuccess);
+    connect(this, &Widget::signal_updateImage, frmalbum, &FrmAlbum::slot_updateImage);
 }
 
 void Widget::initLeftMenu()
@@ -370,6 +374,7 @@ void Widget::pageChangeSlot()
         btnPageUpload->setIcon(iconUploadWhite);
         btnPageSetting->setIcon(iconSettingWhite);
         ui->stackedWidget->setCurrentWidget(frmalbum);
+        emit signal_updateImage();
     }
     else {
         btn->setIcon(iconSettingBlue);