QTdesigner QTreeWidget滚动条样式设置

可以通过以下代码设置QTreeWidget的滚动条样式：

# 获取QTreeWidget的垂直滚动条
v_scrollbar = treeWidget.verticalScrollBar()

# 设置滚动条样式
v_scrollbar.setStyleSheet("QScrollBar:vertical {"
                          "border: none;"
                          "background-color: #F5F5F5;"
                          "width: 10px;"
                          "margin: 0px 0px 0px 0px;"
                          "}"
                          "QScrollBar::handle:vertical {"
                          "background-color: #CFCFCF;"
                          "min-height: 20px;"
                          "}"
                          "QScrollBar::add-line:vertical {"
                          "border: none;"
                          "background-color: #F5F5F5;"
                          "height: 0px;"
                          "subcontrol-position: bottom;"
                          "subcontrol-origin: margin;"
                          "}"
                          "QScrollBar::sub-line:vertical {"
                          "border: none;"
                          "background-color: #F5F5F5;"
                          "height: 0px;"
                          "subcontrol-position: top;"
                          "subcontrol-origin: margin;"
                          "}"
                          "QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {"
                          "background: none;"
                          "}")

# 获取QTreeWidget的水平滚动条
h_scrollbar = treeWidget.horizontalScrollBar()

# 设置滚动条样式
h_scrollbar.setStyleSheet("QScrollBar:horizontal {"
                          "border: none;"
                          "background-color: #F5F5F5;"
                          "height: 10px;"
                          "margin: 0px 0px 0px 0px;"
                          "}"
                          "QScrollBar::handle:horizontal {"
                          "background-color: #CFCFCF;"
                          "min-width: 20px;"
                          "}"
                          "QScrollBar::add-line:horizontal {"
                          "border: none;"
                          "background-color: #F5F5F5;"
                          "width: 0px;"
                          "subcontrol-position: right;"
                          "subcontrol-origin: margin;"
                          "}"
                          "QScrollBar::sub-line:horizontal {"
                          "border: none;"
                          "background-color: #F5F5F5;"
                          "width: 0px;"
                          "subcontrol-position: left;"
                          "subcontrol-origin: margin;"
                          "}"
                          "QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal {"
                          "background: none;"
                          "}")

上述代码中，我们首先获取了QTreeWidget的垂直滚动条和水平滚动条，然后设置了滚动条的样式。可以根据自己的需求调整滚动条的颜色、大小等样式属性。最后，我们调用了setStyleSheet()函数将样式应用到滚动条上。