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Windows 8 Integration: Difference between revisions
→3rd Party Browser Requirements
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** Instructions on creating a bootable USB key [http://social.msdn.microsoft.com/Forums/en-US/windowsdeveloperpreviewgeneral/thread/661d46c3-f6b9-41a4-a696-9d8c225208b6 HERE] | ** Instructions on creating a bootable USB key [http://social.msdn.microsoft.com/Forums/en-US/windowsdeveloperpreviewgeneral/thread/661d46c3-f6b9-41a4-a696-9d8c225208b6 HERE] | ||
== Windows Store == | == Windows Store and Certification == | ||
* [http://blogs.msdn.com/b/windowsstore/archive/2011/12/06/announcing-the-new-windows-store.aspx Store announcements and documentation] | |||
* Big question: would there be licensing and certification issues similar to iOS? | ** [http://msdn.microsoft.com/en-us/library/windows/apps/hh694083.aspx Store Policy for Apps] | ||
** [http://social.msdn.microsoft.com/Forums/en-us/windowsstore/threads Store Discussion Forum] | |||
** [http://blogs.msdn.com/b/ie/archive/2011/10/20/connect-your-web-site-to-your-windows-8-app.aspx Advertising apps from within IE10 Metro] | |||
* <b>Big question</b>: would there be licensing and certification issues similar to iOS? | |||
** <i>"Store policy and various runtime restrictions automatically exclude certain types of apps, which can only be implemented as desktop apps."</i> ([http://msdn.microsoft.com/en-us/library/windows/apps/hh464912%28v=vs.85%29.aspx link]) | ** <i>"Store policy and various runtime restrictions automatically exclude certain types of apps, which can only be implemented as desktop apps."</i> ([http://msdn.microsoft.com/en-us/library/windows/apps/hh464912%28v=vs.85%29.aspx link]) | ||
* Automatic updating - working within the confines of Microsoft's update mechanism | * Automatic updating - working within the confines of Microsoft's update mechanism | ||
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* Subset of Direct2D, Direct3D, DirectWrite drawing apis supported. [http://msdn.microsoft.com/en-us/library/windows/apps/br205756%28v=VS.85%29.aspx Link] | * Subset of Direct2D, Direct3D, DirectWrite drawing apis supported. [http://msdn.microsoft.com/en-us/library/windows/apps/br205756%28v=VS.85%29.aspx Link] | ||
** It looks like D3D is v11 only based on the naming of the APIs in the above-linked document and the the MSFT employee's response [http://social.msdn.microsoft.com/Forums/en-US/wingameswithdirectx/thread/d16bd98b-1872-4775-aafd-2de8ff6a970a here], and the 4:40ish mark of [http://channel9.msdn.com/Events/BUILD/BUILD2011/PLAT-766T this video]. | |||
==== Networking ==== | ==== Networking ==== | ||
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* Most of this info comes from this [http://channel9.msdn.com/Events/BUILD/BUILD2011/APP-409T video on Metro app suspension] | * Most of this info comes from this [http://channel9.msdn.com/Events/BUILD/BUILD2011/APP-409T video on Metro app suspension] | ||
* More available here: [http://blogs.msdn.com/b/b8/archive/2012/02/07/improving-power-efficiency-for-applications.aspx Improving power efficiency for applications] | |||
* There is no multi-tasking of Metro apps: Only one app runs unsuspended at a time, apps are suspended when not in foreground | * There is no multi-tasking of Metro apps: Only one app runs unsuspended at a time, apps are suspended when not in foreground | ||
* Desktop is treated as one app; all other Metro apps are suspended when desktop is active | * Desktop is treated as one app; all other Metro apps are suspended when desktop is active | ||
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=== Contracts === | === Contracts === | ||
[http://msdn.microsoft.com/en-us/library/windows/apps/hh464906.aspx MSDN Contracts] | |||
* There is a new concept called contracts for interconnection/sharing with different metro apps. | * There is a new concept called contracts for interconnection/sharing with different metro apps. | ||
* Implementing contracts provides more integration with the OS (e.g. with the "charms" toolbar) | * Implementing contracts provides more integration with the OS (e.g. with the "charms" toolbar) | ||
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== 3rd Party Browser Requirements == | == 3rd Party Browser Requirements == | ||
-- | |||
These issues for x86 systems have been mitigated by the new <strong>Metro enabled desktop browser model</strong> released by Microsoft. [http://msdn.microsoft.com/en-us/library/windows/apps/hh465413.aspx spec link] | |||
-- | |||
In general, browser vendors would prefer access to the system similar to that of Internet Explorer 10. From all outward appearances IE is currently able to bypass security restrictions of the Metro sandbox by running as a medium integrity process, effectively running as a standard Windows desktop application with additional extensions which allow it to latch into the Metro interface. | In general, browser vendors would prefer access to the system similar to that of Internet Explorer 10. From all outward appearances IE is currently able to bypass security restrictions of the Metro sandbox by running as a medium integrity process, effectively running as a standard Windows desktop application with additional extensions which allow it to latch into the Metro interface. | ||
Vendors feel changes should be made to the current restrictions which will facilitate the ability of 3rd parties to compete with Microsoft's products in this new environment. The following section describes some of the areas or changes various 3rd party browser vendors need in order to provide a compelling browser experience within the Metro interface. | |||
=== Memory allocation and sharing === | |||
(VirtualAlloc / HeapAlloc and friends) | |||
<b>Memory execution</b> - Virtual* / Heap* apis are necessary for allocating executable memory (JIT). We have been successful in allocating memory using CreateFileMapping/MapViewOfFileEx, but based on comments by ms employees [1,2] it appears applications that attempt to do this will not pass Windows Store certification. | |||
<b>Shared memory</b> - While it appears DuplicateHandle is available and passes validation, without an approved method of allocating shared memory, process creation and pipes for communication memory can not be shared between processes. | |||
=== Pipes === | |||
(CreateNamedPipe, ConnectNamedPipe, DisconnectNamedPipe) | |||
<b>IPC</b> - None of the current pipe apis passes validation. According to ms employee comments no IPC type mechanisms are currently accepted [3]. | |||
=== | === Processes === | ||
* | CreateProcess* api calls do not pass validation. | ||
=== | === Links === | ||
* | * [1] [http://stackoverflow.com/questions/7473202/dynamic-code-execution-on-winrt-in-windows-8-either-c-or-net-c Larry Osterman and Steve Rowe comments on dynamic code execution via StackOverflow] | ||
* | * [2] [http://social.msdn.microsoft.com/Forums/en-US/winappswithnativecode/thread/aad27744-f09f-44b3-a73d-cbcee93f4805 Osterman's short answer on VirtualAlloc] | ||
* | * [3] [http://blogs.msdn.com/b/larryosterman/archive/2011/09/16/what-has-larry-been-doing-for-two-years-and-why-has-the-blog-been-dark-for-so-long.aspx Osterman's comments on IPC] | ||
* | * [http://stackoverflow.com/questions/7465517/how-can-a-metro-app-in-windows-8-communicate-with-a-backend-desktop-app-on-the-s comments by Pavel Minaev on pipes, sockets, and shared memory via StackOverflow] | ||
=== Questions === | === Questions === | ||
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* [http://msdn.microsoft.com/en-us/library/windows/desktop/hh448474(v=VS.85).aspx Capability SIDs] | * [http://msdn.microsoft.com/en-us/library/windows/desktop/hh448474(v=VS.85).aspx Capability SIDs] | ||
* [http://msdn.microsoft.com/en-us/library/windows/desktop/hh448449(v=VS.85).aspx App Container SIDs] | * [http://msdn.microsoft.com/en-us/library/windows/desktop/hh448449(v=VS.85).aspx App Container SIDs] | ||