update

QFD/widgets/SchemeOptionWidget.cpp

@@ -61,7 +61,7 @@ void SchemeOptionWidget::initLayout()
     m_normalLayout->addWidget(m_maxButton);
     m_normalLayout->addWidget(m_zscoreButton);
 
-    m_vBoxLayout->addStretch();
+    m_vBoxLayout->addSpacing(20);
 
     m_vBoxLayout->addWidget(m_calcLabel);
     m_vBoxLayout->addLayout(m_calcLayout);
@@ -69,7 +69,7 @@ void SchemeOptionWidget::initLayout()
     m_calcLayout->addWidget(m_pairButton);
     m_calcLayout->addWidget(m_averageButton);
 
-    m_vBoxLayout->addStretch();
+    m_vBoxLayout->addSpacing(20);
 
     m_vBoxLayout->addLayout(m_buttonLayout);
     m_buttonLayout->addStretch();