The most primitive form of make a change a bit from the window of the form, and its function is used to resist outdoor lighting and bad weather. At this moment the window makings is very rich, from the parchment to goat skins, ox horn chips to linen paper-in fact any a translucent, the light can be the material can be used in through the window. 11 th century as Christ church built and a large number of coloured drawing or pattern glass, the application of the function of the window become adornment art of rendering religious anonymity. 17 th century before, "lattice window" by glass production, which are according to the outline of fan's set into small pieces of accordingly glass. So at this point in the window function just zheyu wind and prevent thieves of the invasion. Until late 17 th century, with the progress of The Times, the glass industrial production, the relationship between man and nature change, people realize that the window should also is pure functionalized-not only has a simple daylighting, observation, shelter role. During this time the British invented the straight edges type a casement (that is, make the same score a window); The Netherlands invented the DiaoChuang (i.e. push-up window), DiaoChuang sliding along vertical direction by a pulley equipment control. Marks the doors and Windows hardware system "was born.

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