gdi是什么意思？

GDI就是Gasoline Direct-Injection，汽车燃油直喷燃烧技术；还有MPI（multi-pointsin jection）-多点喷射系统LPI液化石油气喷射（Liquefied Petroleum Injected）引擎，主要指电喷发动机上使用的闭环控制液化石油气以液态喷射式喷出，即装载了液态石油气喷射装置的LPI系统。

Windows GDI

Purpose

The Microsoft® Windows® graphics device interface (GDI) enables applications to use graphics and formatted text on both the video display and the printer. Windows-based applications do not access the graphics hardware directly. Instead, GDI interacts with device drivers on behalf of applications.

Where Applicable

GDI can be used in all Windows-based applications.

Developer Audience

This API is designed for use by C/C++ programmers. Familiarity with the Windows graphical user interface and message-driven architecture is required.

Run-time Requirements

For information on which operating systems are required to use a particular function, see the Requirements section of the documentation for the function.

资料来自MSDN2008 Windows GDI

通俗点说就是 “图形设备接口”，可以同过GDI+对其进行编程操作。