In VC use CImage to convert picture format, display jpg and other format pictures

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Recently on Remote Desktop, you need to transfer pictures between the server and the client. As a direct screenshot of the BMP format, the picture is very large, so you need to compress it into a JPG format transmission. It took a long time to find a way to call an external library (JpgDll.dll) on the Internet. But it often goes wrong when used.

Later, people remind, only know that there is cimage this class.

Examples of CImage classes in MSDN2005:
Ms-help://ms. Vscc.v80/ms. Msdn.v80/ms. Visualstudio.v80.chs/dv_vcsample/html/4b6a0e30-5e37-4ef2-ae84-061540fa80e2.htm

use this class to first add #include <atlimage.h> to the stdafx.h.

save bmp as JPG:

CImage image;
Image. Load (TEXT ("e://images//1.bmp")); Load picture
Image. Save (TEXT ("e://images//1.jpg")); Save as Picture

show jpg:

CImage image;
CRect Zcrect;
GetClientRect (&zcrect);
Image. Load (TEXT ("e://images//1.jpg"));
Image. Draw (GetDC ()->m_hdc,zcrect.left,zcrect.top,zcrect.width (), Zcrect.height ());//Show Picture

Other similarities.