Understanding GDI+
GDI+ is the successor to the GDI API, which has been available in Windows operating systems since the beginning. As GDI was a subsystem in previous versions of Windows, GDI+ is a subsystem within Windows XP that is responsible for displaying graphical information on screens and printers. Outside the functional similarities of the two APIs, GDI+ has an entirely new API that consists of a set of C++ classes for unmanaged code and a set of .NET classes for managed code. Each set of classes expose the entire set of GDI+ functionality. In addition to the new API that GDI+ has created, GDI+ also serves as a wrapper around the original GDI subsystem. Some functions have been improved and optimized, whereas functions that needed no ...
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