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The '''Desktop Composition Engine''' was the desktop compositor in early builds of [[Windows:Longhorn| Windows Longhorn]]. It provided numerous visual effects, such as twirling windows while they were minimized. The compositor is present in Milestone 3 builds, [[Windows:Longhorn:3683.Lab06 N.020923-1821|3683]], [[Windows:Longhorn:3706.Lab06 N.021029-1731|3706]], [[Windows:Longhorn:3713.Lab06 N.021113-1841|3713]], and [[Windows:Longhorn:3718.lab06_N.021119-1730|3718]].
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[[File:DCEDemonstration.png|thumb|right|A demonstration of the Desktop Composition Engine shown during the Windows Hardware Engineering Conference of 2003.]]
The '''Desktop Composition Engine''' was the desktop compositor in builds 3683-4029 of [[Windows Longhorn|Windows "Longhorn"]]. It provided numerous visual effects, such as twirling windows while they were minimized. The compositor is present in Milestone 3 builds: [[Windows Longhorn/6.0.3683.Lab06 N.020923-1821|3683]], [[Windows Longhorn/6.0.3706.Lab06 N.021029-1731|3706]], [[Windows Longhorn/6.0.3713.Lab06 N.021113-1841|3713]], [[Windows Longhorn/6.0.3718.lab06 N.021119-1730|3718]] and [[Windows Longhorn/6.0.4001.main.021204-1515|4001]]. It was also present in later builds in [[Windows Longhorn/6.0.4011.main.030305-2045|4011]] and [[Windows Longhorn/6.0.4015.main.030328-1500|4015]]. In build [[Windows Longhorn/6.0.4008.main.030219-1933|4008]] it is corrupt.


It is unstable in Milestone 4 builds, 4008, [[Windows:Longhorn:4011.main.030305-2045|4011]], and [[Windows:Longhorn:4015.main.030328-1500|4015]].
One of the most well known visual effects of the DCE is present in certain 4015 and 4018 builds (Lab06). In every build that has it, it makes even the menus transparent, and even the screensaver.


One of the most well known visual effects of the DCE is present in certain 4015 and 4018 builds, where open windows would vibrate.
After [[Windows Vista|development reset]] it had been renamed to its well-known name [[Desktop Window Manager]]. However, starting with Longhorn M7 development, many DCE references, such as DceStartup, were being changed to reference DWM.


After the development reset, it became known as [[Desktop Window Manager|Desktop Window Manager]], and ran in its own process, DWM.EXE.
<gallery>
Lh4011dce.png|DCE in build [[Windows Longhorn/6.0.4011.main.030305-2045|4011]]
</gallery>
 
[[Category:Microsoft Windows]]
[[Category:Windows "Longhorn"]]

Latest revision as of 19:35, 9 April 2021

A demonstration of the Desktop Composition Engine shown during the Windows Hardware Engineering Conference of 2003.

The Desktop Composition Engine was the desktop compositor in builds 3683-4029 of Windows "Longhorn". It provided numerous visual effects, such as twirling windows while they were minimized. The compositor is present in Milestone 3 builds: 3683, 3706, 3713, 3718 and 4001. It was also present in later builds in 4011 and 4015. In build 4008 it is corrupt.

One of the most well known visual effects of the DCE is present in certain 4015 and 4018 builds (Lab06). In every build that has it, it makes even the menus transparent, and even the screensaver.

After development reset it had been renamed to its well-known name Desktop Window Manager. However, starting with Longhorn M7 development, many DCE references, such as DceStartup, were being changed to reference DWM.