修复 `QCompleter` 最大显示数量不起作用的问题 (#416)

examples/line_edit/demo.py

@@ -40,6 +40,7 @@ class Demo(QWidget):
         ]
         self.completer = QCompleter(stands, self.lineEdit)
         self.completer.setCaseSensitivity(Qt.CaseInsensitive)
+        self.completer.setMaxVisibleItems(5)
         self.lineEdit.setCompleter(self.completer)
 
         self.resize(400, 400)

qfluentwidgets/components/widgets/line_edit.py

@@ -132,6 +132,7 @@ class LineEdit(QLineEdit):
         # add menu items
         self.completer().setCompletionPrefix(self.text())
         changed = self._completerMenu.setCompletion(self.completer().completionModel())
+        self._completerMenu.setMaxVisibleItems(self.completer().maxVisibleItems())
 
         # show menu
         if changed: