Qt滚动条样式demo

setStyleSheet("QScrollBar:vertical"
		"{"
		"width:8px;"
		"background:rgba(0,0,0,0%);"
		"margin:0px,0px,0px,0px;"
		"padding-top:0px;"
		"padding-bottom:0px;"
		"}"
		"QScrollBar::handle:vertical"
		"{"
		"width:8px;"
		"background:rgba(0,0,0,25%);"
		" border-radius:4px;"
		"min-height:20px;"
		"max-height:20px"
		"}"
		"QScrollBar::handle:vertical:hover"
		"{"
		"width:8px;"
		"background:rgba(0,0,0,50%);"
		" border-radius:4px;"
		"min-height:20px;"
		"max-height:20px"
		"}"
		"QScrollBar::add-page:vertical,QScrollBar::sub-page:vertical"
		"{"
		"background:rgba(0,0,0,10%);"
		"border-radius:4px;"
		"}"
		"QScrollBar::sub-line{background:transparent;}"
		"QScrollBar::add-line{background:transparent;}"
		"QScrollBar{ background:#6c6c6c; width: 10px; }"
	);