Community Changelog-0.4.12

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ReactOS 0.4.12 is not released yet, the information on this page is referring to the future release of ReactOS 0.4.12.
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  • EX: Implemented returning the amount of context switches and system calls in the system performance query. (Pierre Schweitzer)
  • EX: Implemented querying Deferred Procedure Call statistics information. (Pierre Schweitzer)
  • PNP: Some work towards proper device power management. (Eric Kohl)


  • usetup/setuplib: Improved partition management and fixed some bugs. (Hermes Belusca-Maito)
  • usetup/setuplib: Detect GPT-partitioned disks. GPT is still not supported at the moment. (Hermes Belusca-Maito)

Win32 subsystem:

  • win32ss/ntuser: Finished ghost window support. (Katayama Hirofumi MZ)
  • font: Added one more CJK font substitute to fix glitches. (Luo Yufan)
  • user32: Implemented arrow keys in task switcher (Alt+Tab). (Katayama Hirofumi MZ)


  • tcpip: Properly return Address Translation information. This fixes compatibility with lsass executable from Windows 2003. (Timo Kreuzer)
  • floppy_new: Imported open source floppy driver from Microsoft. It's not integrated yet. (Pierre Schweitzer)


System DLLs:

  • kernel32: Computer name changes become effective only after reboot. (Eric Kohl)

User-mode DLLs:

  • shell32: Added a stub for IActiveDesktop that allows running some apps. (Mark Jansen)
  • shell32: Environment variables are now accepted in Run dialog. (Katayama Hirofumi MZ)
  • shell32: Fixed "C:" vs "C:\" bug in Run dialog. (Katayama Hirofumi MZ)
  • shell32: URLs are now accepted in Run dialog. (Katayama Hirofumi MZ)
  • shell32: Improvements to folder view. (Katayama Hirofumi MZ)
  • browseui: Added backslash for directories. (Katayama Hirofumi MZ)
  • ole32: Fixed a bug prevented deleting any file or folder via context menu. (Mark Jansen)
  • mspatcha: Added initial support for resolving signature, decoding and applying of patch files. Lots of the patch format are still unknown. (Mark Jansen)

Commands and utilities:

  • vcdcontroltool: Added a GUI app for managing virtual CD-ROM drives, with persistent mount support. (Pierre Schweitzer)
  • osk: Properly show the application icon in the window caption and in the task switcher. (Bisoc George, Hermes Belusca-Maito)
  • regedit: Fixed graphical glitch in splitter. (Katayama Hirofumi MZ)
  • cpl: Properly set applets' display icons, also added some more icons. (Katayama Hirofumi MZ)
  • umpnpmgr: Re-enable the usage of Interlocked Singly-Linked Lists. (Hermes Belusca-Maito)


  • Upgraded btrfs to v1.1. (Pierre Schweitzer)
Versions / Official Changelogs / Community Changelogs
0.4.x Series 0.4.1 | 0.4.2 | 0.4.3 | 0.4.4 | 0.4.5 | 0.4.6 | 0.4.7 | 0.4.8 | 0.4.9 | 0.4.10 | 0.4.11 | 0.4.12 | 0.4.13 | 0.4.14 | 0.4.15