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windows-xp/Source/XPSP1/NT/base/busdrv/acpi/hidbatt/hidbatt.htm

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  1. <HTML>
  2. <HEAD>
  3. <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=windows-
  4. 1252">
  5. <META NAME="Generator" CONTENT="Microsoft Word 97">
  6. <TITLE>Hidbatt</TITLE>
  7. </HEAD>
  8. <BODY LINK="#0000ff">
  10. <FONT FACE="Verdana" SIZE=5><H2> Hidbatt </H2>
  11. </FONT><FONT FACE="Verdana" SIZE=2>
  12. <P><span style="color:#FF0000;font-size:10pt;font-family:Arial">[This is preliminary
  13. documentation and subject to change.]</span></P>
  15. <H3>SUMMARY</H3></FONT><FONT FACE="Verdana" SIZE=2><P>
  16. This is a battery class
  17. driver for devices using the HID power class specification. The driver reads this type of device and
  18. prevents a Microsoft&#174; Windows&#174; battery class device to the system so that it can be treated like any other battery in the system.<P>
  19. The driver works on x86 and Alpha platforms, is 64-bit compliant, and supports Plug and Play.<p>
  22. <H3>BUILDING THE SAMPLE</H3></FONT><FONT FACE="Verdana"
  23. SIZE=2><P>
  24. Type <b>build</b> from the
  25. \\Ntddk\Src\Wdm\Acpi\Hidbatt directory. A successful build
  26. creates Hidbatt.sys.<p>
  28. <H3>CODE TOUR</H3>
  29. <H4>File Manifest</H4>
  30. </FONT><U><PRE>File&#9;&#9;Description
  31. </U>
  32. Cbattery.cpp&#9;Reads battery information from HID
  33. Cbattery.h&#9;#defines, et cetera, to allow reading battery information from HID
  34. Ckhid.cpp&#9;Basic communication with HID
  35. Ckhid.h &#9;Header for Ckhid.cpp
  36. Ckutils.cpp&#9;Miscellaneous functions
  37. Ckutils.h&#9;Miscellaneous header
  38. Devext.cpp&#9;Device extention initialization
  39. Devext.h &#9;Device extension definition
  40. Drvclass.cpp&#9;Miscellaneous functions used by driver
  41. Drvclass.h&#9;Header for Drvclass.cpp
  42. Hid.h&#9;&#9;C++ class for dealing with HID device
  43. Hidbatt.cpp&#9;Driver entry and major dispatch routines
  44. Hidbatt.h &#9;Header for hidbatt.cpp
  45. Hidbatt.rc&#9;Resource file
  46. Hidbattio.cpp&#9;Battery class interface functions
  47. Hidbattpnp.cpp &#9;Routines called from Plug and Play dispatch routine
  48. Hidpddi.h&#9;#Include header files
  49. Ntddk.h&#9;defines types, constants, and functions that are exposed to device drivers.
  50. Batclass.h&#9;header for wdm kernel client interface between HID class and power class
  51. Hidclass.h&#9;Definitions that are common to clients of the HID class driver.
  52. Wdm.h&#9; defines WDM types, constants, and functions that are exposed to device drivers
  53. <P>
  54. </FONT><P ALIGN="CENTER"><A HREF="#top"><FONT FACE="Verdana" SIZE=2>Top of page</FONT></A><FONT FACE="Verdana" SIZE=2> </P></FONT>
  55. <TABLE CELLSPACING=0 BORDER=0 WIDTH=624>
  56. <TR><TD VALIGN="MIDDLE" BGCOLOR="#00ffff" HEIGHT=2>
  57. <P></TD>
  58. </TR>
  59. </TABLE>
  61. <FONT FACE="MS Sans Serif" SIZE=1><P>&copy; 1999 Microsoft Corporation</FONT><FONT FACE="Verdana" SIZE=2> </P></FONT></BODY>
  62. </HTML>