diff --git a/src/image_show.cpp b/src/image_show.cpp
index a9bcfa0..4dcc773 100644
--- a/src/image_show.cpp
+++ b/src/image_show.cpp
@@ -1,16 +1,19 @@
 #include "image_show.h"
+
+#include <QScreen>  // Qt5 不再建议使用 QDesktopWidget
 #include <QHBoxLayout>
-#include <QDebug>
 #include <QPainter>
+
 #include <DDialog>
 #include <DBlurEffectWidget>
 #include <DWidgetUtil>
 #include <DApplication>
-#include <QDesktopWidget>
+
 DWIDGET_USE_NAMESPACE
+
 image_show::image_show(QWidget *parent) : QWidget(parent)
 {
-    QHBoxLayout *layout=new QHBoxLayout;
+    QHBoxLayout *layout = new QHBoxLayout;
     layout->addWidget(m_label);
     setLayout(layout);
     m_label->setText("layout");
@@ -19,17 +22,23 @@ image_show::image_show(QWidget *parent) : QWidget(parent)
 void image_show::setImage(QPixmap image)
 {
     QImage screen0;
-    screen0=image.toImage();
-//    QPainter painter(&screen0);
+    screen0 = image.toImage();
+    // QPainter painter(&screen0);
     QImage re_screen1;
-    QImage re_screen0=screen0.scaled(QSize(400,300),Qt::KeepAspectRatio,Qt::SmoothTransformation);
-    desktop_w=DApplication::desktop()->width();
-    desktop_h=DApplication::desktop()->height();
-    if(screen0.width()>(desktop_w-20) || screen0.height()>(desktop_h-20)){
-         re_screen1=screen0.scaled(QSize(desktop_w-20,desktop_h-20),Qt::KeepAspectRatio,Qt::SmoothTransformation);
-         m_image=QPixmap::fromImage(re_screen1);
-    }else {
-        m_image=image;
+    QImage re_screen0 = screen0.scaled(QSize(400, 300), Qt::KeepAspectRatio, Qt::SmoothTransformation);
+
+    // 获取主屏幕尺寸
+    desktop_w = DApplication::primaryScreen()->geometry().width();
+    desktop_h = DApplication::primaryScreen()->geometry().height();
+
+    if(screen0.width() > (desktop_w - 20) || screen0.height() > (desktop_h - 20))
+    {
+        re_screen1 = screen0.scaled(QSize(desktop_w - 20, desktop_h - 20), Qt::KeepAspectRatio, Qt::SmoothTransformation);
+        m_image = QPixmap::fromImage(re_screen1);
+    }
+    else
+    {
+        m_image = image;
     }
 
     m_label->setPixmap(QPixmap::fromImage(re_screen0));
@@ -37,10 +46,12 @@ void image_show::setImage(QPixmap image)
 
 void image_show::mousePressEvent(QMouseEvent *)
 {
-   m_dialog->setimage(m_image);
-   m_dialog->showFullScreen();
-   m_dialog->setFixedSize(desktop_w,desktop_h);
-   m_dialog->move(0,0);/*
-   moveToCenter(m_dialog);*/
+    m_dialog->setimage(m_image);
+    m_dialog->showFullScreen();
 
+    // 识别主屏幕尺寸并设置 widget 大小
+    m_dialog->setFixedSize(desktop_w, desktop_h);
+
+    m_dialog->move(0,0);
+    // moveToCenter(m_dialog);
 }