The causes of macular edema are numerous and different causes may be inter-related. It is commonly associated with diabetes. Chronic or uncontrolled diabetes type 2 can affect peripheral blood vessels including those of the retina which may leak fluid, blood and occasionally fats into the retina causing it to swell.
Visual C++. Visual C++ is known as a native development language, as it talks directly to the hardware for the Windows Mobile device, with no intervening layers (unlike Visual C#, for example). Programming using C++ can be challenging, as it is not a trivial language to learn.
Scriptable Shell Objects. The Windows Shell provides a powerful set of automation objects that enable you to program the Shell with Microsoft Visual Basic and scripting languages such as Microsoft JScript (compatible with ECMA 262 language specification) and Microsoft Visual Basic Scripting Edition (VBScript).