PYQT5 (十二)图片控件，截图功能

https://zhuanlan.zhihu.com/p/32134728

主要是使用Qlabel来实现

获取宽度:Qlabel.width()

获取高度：Qlabel.height()

def cut(self):

    screen = QApplication.primaryScreen()

# pix = screen.grabWindow(self.window.winId())

    pix = screen.grabWindow(self.img_label.winId())

pix.save("test.jpg")

图片太大的解决方法：

self.scrollArea = QtWidgets.QScrollArea(self.centralwidget)

self.scrollArea.setGeometry(QtCore.QRect(20,60,841,591))

self.scrollArea.setWidgetResizable(True)

self.scrollArea.setObjectName("scrollArea")

self.MyScroll = QtWidgets.QWidget()

self.MyScroll.setGeometry(QtCore.QRect(0,0,839,589))

self.MyScroll.setObjectName("MyScroll")

self.MyScroll.setMinimumSize(7000,7000)

#scrollArea就对了

图片控件（QImage)

def pic(self):

# print(self.window.size)

    pix = QPixmap('icon/123.png')

scale=1

    print(pix.width())

if pix.width()

self.img_label.setGeometry(10,10,pix.width()*scale,pix.height()*scale)

else:

self.img_label.setScaledContents(True)

# self.img_label.setGeometry(10, 10, self.width*scale,  self.height*scale)

    self.img_label.setStyleSheet("border: 2px solid red")

self.img_label.setPixmap(pix)

# self.img_label.mouseDoubleClickEvent(self.zoom())