Color of a screen pixel: Difference between revisions
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=={{header|J}}==
Note that the concept of "screen" has both hardware and operating system dependencies.
Assuming the OS is Windows (Windows being an operating system with fairly wide adoption, which also guarantees a specific concept of "screen"):
<lang J>GetDC=: 'user32.dll GetDC >i i'&cd NB. hdx: GetDC hwnd
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