diff --git a/src/widgets/daboutdialog.cpp b/src/widgets/daboutdialog.cpp
index 3ee17afa..0f219d26 100644
--- a/src/widgets/daboutdialog.cpp
+++ b/src/widgets/daboutdialog.cpp
@@ -461,7 +461,7 @@ void DAboutDialog::setProductIcon(const QIcon &icon)
 #else
     winId(); // TODO: wait for checking
     auto window = windowHandle();
-    d->logoLabel->setPixmap(icon.pixmap(window->baseSize(), window->screen()->devicePixelRatio()));
+    d->logoLabel->setPixmap(icon.pixmap(QSize(128, 128), window->screen()->devicePixelRatio()));
 #endif
 }
 
diff --git a/src/widgets/dabstractdialog.cpp b/src/widgets/dabstractdialog.cpp
index 57c29921..4a5c5e1c 100644
--- a/src/widgets/dabstractdialog.cpp
+++ b/src/widgets/dabstractdialog.cpp
@@ -68,6 +68,11 @@ void DAbstractDialogPrivate::init(bool blurIfPossible)
         q->setAttribute(Qt::WA_TranslucentBackground, blurIfPossible);
     } else if (noTitlebarEnabled()) {
         handle = new DPlatformWindowHandle(q, q);
+
+        if (!handle->enableBlurWindow()) {
+            handle->setEnableBlurWindow(true);
+        }
+
         // fix wayland no titlebar
         //q->setWindowFlags(q->windowFlags() | Qt::FramelessWindowHint);
     }
diff --git a/src/widgets/ddialog.cpp b/src/widgets/ddialog.cpp
index dd0f4a1a..815f1682 100644
--- a/src/widgets/ddialog.cpp
+++ b/src/widgets/ddialog.cpp
@@ -125,12 +125,14 @@ void DDialogPrivate::init()
     spacer = new QSpacerItem(1, 0);
 
     // MainLayout--TopLayout
+    mainLayout->setSpacing(0);
     mainLayout->addWidget(titleBar, 0, Qt::AlignTop);
     mainLayout->addWidget(contentWidget);
     mainLayout->setContentsMargins(QMargins(0, 0, 0, 0));
 
     // MainLayout--ButtonLayout
     buttonLayout = new QHBoxLayout;
+    buttonLayout->setSpacing(5);
     buttonLayout->setContentsMargins(DIALOG::BUTTON_LAYOUT_LEFT_MARGIN,
                                      DIALOG::BUTTON_LAYOUT_TOP_MARGIN,
                                      DIALOG::BUTTON_LAYOUT_RIGHT_MARGIN,
diff --git a/src/widgets/dmessagemanager.cpp b/src/widgets/dmessagemanager.cpp
index 0d70826b..6e7a362b 100644
--- a/src/widgets/dmessagemanager.cpp
+++ b/src/widgets/dmessagemanager.cpp
@@ -68,17 +68,21 @@ template<typename IconType>
 static void sendMessage_helper(DMessageManager *manager, QWidget *par, IconType icon, const QString &message)
 {
     QWidget *content = par->findChild<QWidget *>(D_MESSAGE_MANAGER_CONTENT, Qt::FindDirectChildrenOnly);
-    int text_message_count = 0;
 
-    for (DFloatingMessage *message : content->findChildren<DFloatingMessage*>(QString(), Qt::FindDirectChildrenOnly)) {
-        if (message->messageType() == DFloatingMessage::TransientType) {
-            ++text_message_count;
+    if (content) {
+        int text_message_count = 0;
+
+        for (DFloatingMessage *message : content->findChildren<DFloatingMessage *>(QString(), Qt::FindDirectChildrenOnly)) {
+            if (message->messageType() == DFloatingMessage::TransientType) {
+                ++text_message_count;
+            }
         }
-    }
 
-    // TransientType 类型的通知消息，最多只允许同时显示三个
-    if (text_message_count >= 3)
-        return;
+        // TransientType 类型的通知消息，最多只允许同时显示三个
+        if (text_message_count >= 3) {
+            return;
+        }
+    }
 
     DFloatingMessage *floMsg = new DFloatingMessage(DFloatingMessage::TransientType);
     floMsg->setAttribute(Qt::WA_DeleteOnClose);