改代码是将屏幕一个固定区域进行截图，其中的m_draw是一个图片控件的变量，其原理是利用dc对固定区域生成bmp图像并放入剪切板中，而在截图之前定义了一个铺满屏幕的透明窗口IDD_CutPage,这样在窗口上draw出来的图像也可以截图，要获得图像，在文档中粘贴即可-Code is changed to a fixed area of ​ ​ the screen shots, which m_draw is a picture of the control variables, the principle is the use of dc generator bmp image to the clipboard and placed in a fixed area, and before the definition of a covered screen shots The transparent window IDD_CutPage, so draw out the picture window can be shot, to get the image, you can paste in a document