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Fixes #4051 - Adds cancellable_work_pattern.md (#4052)

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* touching publish.yml

* Updated md files

* Updated md files 2

* Updated md files 3

* Updated API docs to point

* commmand->command

* Update Terminal.Gui/View/View.Command.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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2025-04-28 06:40:24 -06:00
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docfx/docs/drawing.md
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@@ -44,7 +44,7 @@ The @Terminal.Gui.Application MainLoop will iterate over all Views in the view h
12) DrawComplete is raised.
13) The current View's Frame NOT INCLUDING the Margin is excluded from the current Clip region.
Most of the steps above can be overridden by developers using the standard [Terminal.Gui cancellable event pattern](events.md). For example, the base @Terminal.Gui.View always clears the viewport. To override this, a subclass can override @Terminal.Gui.View.OnClearingViewport to simply return `true`. Or, a user of `View` can subscribe to the @Terminal.Gui.View.ClearingViewport event and set the `Cancel` argument to `true`.
Most of the steps above can be overridden by developers using the standard [Terminal.Gui Cancellable Work Pattern](cancellable_work_pattern.md). For example, the base @Terminal.Gui.View always clears the viewport. To override this, a subclass can override @Terminal.Gui.View.OnClearingViewport to simply return `true`. Or, a user of `View` can subscribe to the @Terminal.Gui.View.ClearingViewport event and set the `Cancel` argument to `true`.
Then, after the above steps have completed, the Mainloop will iterate through all views in the view hierarchy again, this time calling Draw on any @Terminal.Gui.View.Margin objects, using the cached Clip region mentioned above. This enables Margin to be transparent.