WDF WMI problem

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  - 1
    - UNIDRV Grayscale Vector vs. DIB Conversion UNIDRV is doing differnt GrayScale conversions for Vector and Bitmap Objects. In grayscale printmodes, GDI renders these differently Vector objects use Gray = (R+G+B)/3 Bitmap objects use ? Likely an NTSC luminance weighting, i.e., Gray = 0.3 * R + 0.59 * G + 0.11 * B How Do I get UNIDRV to do a GrayScale conversion Like NTSC luminance weighting for all objects? Here the current GPD Settings for ColorMode: *%==================================================================== *% ColorMode Feature *%==================================================================== *Feature: ColorMode { *rcNameID: =COLOR_PRINTING_MODE_DISPLAY *DefaultOption: Color24 *Option: Mono1 { *rcNameID: =IDC_MONO_RADIO *DevNumOfPlanes: 0 *DevBPP: 0 *DrvBPP: 8 *RasterMode: DIRECT *IPCallbackID: 1 *Color? : FALSE *Command: CmdSendBlockData { *Cmd: "" } *Command: CmdSelect { *Order: DOC_SETUP.10 *Cmd: ="" } } *Option: Color24 { *rcNameID: =IDC_COLOR_RADIO *DevNumOfPlanes: 0 *DevBPP: 0 *DrvBPP: 24 *RasterMode: DIRECT *IPCallbackID: 2 *Color? : TRUE *Command: CmdSendBlockData { *Cmd: "" } *Command: CmdSelect { *Order: DOC_SETUP.10 *Cmd: ="" } } } Thank you, Guy Light Tag: WDF WMI problem Tag: 78246
  - 2
    - Word Text Squished Randomly to column 1. Word 2003 and Word SP1 or Word SP2... is squishing text randomly when printer is selected. Is this a Word bug that has yet to be fixed or is there something the printer driver needs to do in order to help out Word? How do I get Word to be well behaved when Printer is selected. Tag: WDF WMI problem Tag: 78244
  - 3
    - KMDF Notification Hi. I want my driver to notify a user mode thread when an event happens. For WDM, the preferred method (Oney) seemed to be creating a shared event and pass this to the driver with a DeviceIOControl. In the driver you would use ObReferenceObjectByHandle to get to the event. Is this still the preferred way under WDF? Is it better to create a DeviceIOControl that waits for the event (either directly or through an overlapped call)? Or is WMI and WdfWmiInstanceFireEvent the way to go? I have tried the DeviceIOControl call that waits for the event but that stops other DeviceIOControl calls getting to the driver. This is with SynchronisationScope set to None. Any advice appreciated. Thanks. Laurence. Tag: WDF WMI problem Tag: 78243
  - 4
    - RtlUnicodeStringToInteger is either mis documented or buggy Code: RtlInitUnicodeString(&str, buf); RtlUnicodeStringToInteger(&str, 16, &val1); WinDbg watch: str : struct _UNICODE_STRING "123" val1 : 0x123 I dont know about anyone else but I was expecting 0x7B. Ie, that it works the same as atoi. Anyone got any views on this? Tag: WDF WMI problem Tag: 78242
  - 5
    - Using compression from kernel mode... hi I am developing a kernel mode driver in which I need to compress/decompress huge amount of data.Now all the available compression libraries seem to contain the usage C run time libraries,making it very unsuitable for use in windows kernel mode. Is there any compression decompression library for windows kernel mode environment? Rgds Tag: WDF WMI problem Tag: 78239
  - 6
    - Printer driver for Epson LQ-2070 This driver is included in Windows XP. Is it included in my Windows XP Home edition Version 2002 CD? If it is, how do I check that it has been loaded on my computer? If it is not, how do I obtain a copy?Epson does not make an Epson 2070 driver for XP. Tag: WDF WMI problem Tag: 78238
  - 7
    - How to produce the race condition by DDK.3790? There are so much dualcore/hyperthreading platforms. Does the DDK can build out the real multi-treading supported driver? I maintain the vga driver. In WinXP, the vga driver own 2 parts, miniport and display. I made 2 tests, the 1st can overlap display/miniport function; the other can't. I don't know why the 2nd test can't produce the race condition. case 1) This can make it. T1: The pc-cam call directdraw function repeatly. T2: The miniport interrupt function check this interrupt belong to repeatly? case 2) I confused this. T1: One AP fired IRP to the IRP handle of miniport function. It's fireing repeatly. T2: The dvd player use directdraw function play the video file. Why the case 2 can't produce the race condition?? Does the ddk3790 support multi-threading? Or I got the mistake. The display and miniport part never overlap, they are sequential except the isolation level is high. -william Tag: WDF WMI problem Tag: 78236
  - 8
    - ZwCreateFile causes UNEXPECTED_KERNEL_MODE_TRAP when PC starts with Ndis WDM device inserted Hi all If I boot the PC with the Ndis WDM device inserted, I get the following BSOD when ZwCreateFile is called from MiniportInitialise. When the device is inserted after the PC has booted there is no problem. Here is the code. RtlInitUnicodeString(&ObjectName, L"\\SystemRoot\\system32\\drivers\\GTNDIS.cfg"); InitializeObjectAttributes(&ObjectAttributes, &ObjectName, OBJ_CASE_INSENSITIVE, NULL, NULL); Status = ZwCreateFile( &hfile, FILE_READ_DATA | SYNCHRONIZE | DELETE, &ObjectAttributes, &IoStatusBlock, NULL, FILE_ATTRIBUTE_NORMAL, 0, FILE_OPEN, FILE_DELETE_ON_CLOSE | FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0); Here is the trace: ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* UNEXPECTED_KERNEL_MODE_TRAP (7f) This means a trap occurred in kernel mode, and it's a trap of a kind that the kernel isn't allowed to have/catch (bound trap) or that is always instant death (double fault). The first number in the bugcheck params is the number of the trap (8 = double fault, etc) Consult an Intel x86 family manual to learn more about what these traps are. Here is a *portion* of those codes: If kv shows a taskGate use .tss on the part before the colon, then kv. Else if kv shows a trapframe use .trap on that value Else .trap on the appropriate frame will show where the trap was taken (on x86, this will be the ebp that goes with the procedure KiTrap) Endif kb will then show the corrected stack. Arguments: Arg1: 00000008, EXCEPTION_DOUBLE_FAULT Arg2: 80042000 Arg3: 00000000 Arg4: 00000000 Debugging Details: ------------------ BUGCHECK_STR: 0x7f_8 TSS: 00000028 -- (.tss 28) eax=89d162b0 ebx=89d162b0 ecx=00000001 edx=00000000 esi=89cb2100 edi=bad01700 eip=ba626b0f esp=bad01000 ebp=bad01004 iopl=0 nv up ei pl zr na po nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010246 Ntfs!NtfsMcbLookupArrayIndex+0xc: ba626b0f 56 push esi Resetting default scope DEFAULT_BUCKET_ID: DRIVER_FAULT LAST_CONTROL_TRANSFER: from ba626a50 to ba626b0f STACK_TEXT: bad01004 ba626a50 89d162b0 00000006 00000000 Ntfs!NtfsMcbLookupArrayIndex+0xc bad01030 ba626bbb 89d162b0 00000006 00000000 Ntfs!NtfsLookupNtfsMcbEntry+0x23 bad0113c ba62707c bad01700 89d16218 00000006 Ntfs!NtfsLookupAllocation+0x5b bad0130c ba626cf6 bad01700 8ac64e70 89d16218 Ntfs!NtfsPrepareBuffers+0x270 bad014f4 ba62803b bad01700 8ac64e70 89d16218 Ntfs!NtfsNonCachedIo+0x20e bad016f0 ba627c97 bad01700 8ac64e70 0110070a Ntfs!NtfsCommonWrite+0x1824 bad01864 804eddf9 89cb2020 8ac64e70 806d02e8 Ntfs!NtfsFsdWrite+0xf3 bad01874 8064b5a8 8ac64e70 89d1a040 89d15530 nt!IopfCallDriver+0x31 bad01898 ba6ca3ca 89d15478 89d15400 bad018dc nt!IovCallDriver+0xa0 bad018a8 804eddf9 89d15478 8ac64e70 806d02e8 sr!SrWrite+0xaa bad018b8 8064b5a8 89cb0a28 00003000 89d15478 nt!IopfCallDriver+0x31 bad018dc 804ef0d5 e17af8f8 00001000 e1507658 nt!IovCallDriver+0xa0 bad018f0 ba647e86 89cb0a08 89da6428 bad01994 nt!IoSynchronousPageWrite+0xaf bad019bc ba647f50 e1507658 e17af8f8 e1507658 Ntfs!LfsFlushLfcb+0x429 bad019e0 ba64da1f e1507658 e17af8f8 e157a230 Ntfs!LfsFlushLbcb+0x81 bad01a08 ba646a8e e1507658 0993b51c 00000000 Ntfs!LfsFlushToLsnPriv+0xf3 bad01a48 ba658341 e157a230 0993b51c 00000000 Ntfs!LfsFlushToLsn+0x8e bad01a7c ba650110 899e7a98 e1650be0 e1650ca8 Ntfs!NtfsCommitCurrentTransaction+0x215 bad01a90 ba65169f 899e7a98 899e7a98 e1650ca8 Ntfs!NtfsCheckpointCurrentTransaction+0x21 bad01b64 ba650e2f 899e7a98 89b9e608 8abaee90 Ntfs!NtfsSetEndOfFileInfo+0x5ea bad01bd4 ba629ad8 899e7a98 8abaee90 89cb2020 Ntfs!NtfsCommonSetInformation+0x477 bad01c3c 804eddf9 89cb2020 8abaee90 806d02e8 Ntfs!NtfsFsdSetInformation+0xa3 bad01c4c 8064b5a8 8abaefd8 8abaeea0 8abaee90 nt!IopfCallDriver+0x31 bad01c70 8056f689 bad01d38 bad01dc4 8056f11a nt!IovCallDriver+0xa0 bad01d1c 8053c808 8000034c bad01e50 bad01e20 nt!NtSetInformationFile+0x56f bad01d1c 804fe405 8000034c bad01e50 bad01e20 nt!KiFastCallEntry+0xf8 bad01da8 ba6ce1e4 8000034c bad01e50 bad01e20 nt!ZwSetInformationFile+0x11 bad01e5c ba6ce502 80000310 89cb2020 e1760c08 sr!SrCopyStream+0x22e bad01fd8 ba6ce87b 89d15530 89c16f90 e1750754 sr!SrBackupFile+0x2b0 bad02040 ba6d05a9 89d15530 00010010 89c16f90 sr!SrBackupFileAndLog+0x4b bad02068 ba6d12c8 89d15530 00010010 89c16f90 sr!SrHandleFileChange+0x59 bad020b4 ba6cfa22 89d15530 00010010 89c16f90 sr!SrHandleEvent+0x194 bad02118 804eddf9 00000000 00000001 806d02e8 sr!SrCreate+0x2fc bad02128 8064b5a8 89e8ce80 89e8ce70 89c16f90 nt!IopfCallDriver+0x31 bad0214c 805773bc 89d128e8 89cc819c bad022f4 nt!IovCallDriver+0xa0 bad0222c 805b365e 89d12900 00000000 89cc80f8 nt!IopParseDevice+0xa58 bad022b4 805afb3f 00000000 bad022f4 00000040 nt!ObpLookupObjectName+0x56a bad02308 8056a133 00000000 00000000 d0245400 nt!ObOpenObjectByName+0xeb bad02384 8056aaaa bad03408 00110001 bad033e8 nt!IopCreateFile+0x407 bad023e0 8056d17c bad03408 00110001 bad033e8 nt!IoCreateFile+0x8e bad02420 8053c808 bad03408 00110001 bad033e8 nt!NtCreateFile+0x30 bad02420 804fd569 bad03408 00110001 bad033e8 nt!KiFastCallEntry+0xf8 bad024c4 a9d23c57 bad03408 00110001 bad033e8 nt!ZwCreateFile+0x11 bad0340c a9d24ffc 899b2000 899cfad0 ba5fad0c Gtm51Irp!ReadRegistryParamsFromFileFunc+0x61 [c:\work\driver\source\projects\cobra\gtndisirp\readparams.c @ 2392] bad035f0 a9d1e967 899b2000 bad038ec 00000000 Gtm51Irp!ParseRegistryParameters+0x1de [c:\work\driver\source\projects\cobra\gtndisirp\readparams.c @ 119] bad03710 ba603dea bad0374c bad03754 ba5ff200 Gtm51Irp!GPRSZCSInitialize+0x4c5 [c:\work\driver\source\projects\cobra\gtndisirp\main.c @ 493] bad038c8 ba6039cc 89b92950 bad038ec bad03994 NDIS!ndisMInitializeAdapter+0x3b7 bad0399c ba6038ba 89b92950 00000000 89cc3be8 NDIS!ndisInitializeAdapter+0xb9 bad039d0 ba604d99 899cf9d0 89b5e040 8ac5cd00 NDIS!ndisPnPStartDevice+0xd6 bad03a00 804eddf9 899cf9d0 8ac5cdb8 806d02e8 NDIS!ndisPnPDispatch+0x306 FOLLOWUP_IP: Gtm51Irp!ReadRegistryParamsFromFileFunc+61 [c:\work\driver\source\projects\cobra\gtndisirp\readparams.c @ 2392] a9d23c57 85c0 test eax,eax SYMBOL_STACK_INDEX: 2b FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: Gtm51Irp!ReadRegistryParamsFromFileFunc+61 MODULE_NAME: Gtm51Irp IMAGE_NAME: Gtm51Irp.sys DEBUG_FLR_IMAGE_TIMESTAMP: 443b655c STACK_COMMAND: .tss 28 ; kb FAILURE_BUCKET_ID: 0x7f_8_Gtm51Irp!ReadRegistryParamsFromFileFunc+61 BUCKET_ID: 0x7f_8_Gtm51Irp!ReadRegistryParamsFromFileFunc+61 Followup: MachineOwner --------- Is this expected? If so, is there a way of waiting untill the system is sufficiently up to support this call? Thanks in advence for any input on this. Tag: WDF WMI problem Tag: 78228
  - 9
    - USB controlling Hi, I want to disable/enable the USB ports. So, that no one can can access that device connected with that port. I tried the CreateFile method with no SHARE rights & read/write access ... but it was not useful. Again, i found usbioctl.h header file with WINDDK there we have a flag defines like IOCTL_INTERNAL_USB_ENABLE_PORT, IOCTL_USB_HCD_DISABLE_PORT and IOCTL_USB_HCD_ENABLE_PORT but i don't know how to use it. Can any one show me a light ?? Thanks in anticipation. Tag: WDF WMI problem Tag: 78226
  - 10
    - Interrupt handling in Vista Beta2 Hi All, I am developing NDIS6.0 network driver on Windows Vista Beta2. I get a crash as soon as my interrupt handler(DpcForIsr) is returned. On the other hand if in MPIsr, if i dont claim any interrupts i.e when interrupt handler(DpcForIsr) is not called at all, everything is fine. On Vista Beta1, this doesnt happen. Is anything newly added regarding interrupt management in Vista Beta2(5308 build). Thanks, Chiranjeevi. Tag: WDF WMI problem Tag: 78221
  - 11
    - How to support Motion JPEG format in driver ? Does intelcam.sys support Motion JPG format(ex:FCC_FORMAT_MJPG)? I can't find enough information in document. MJPG option is showed in Amcap but can not preview with MJPG format. KS_DATARANGE_VIDEO structure below Thanks for any help or hint. -SL ============================================================= KS_DATARANGE_VIDEO StreamFormat_VGA_MJPG = { // KSDATARANGE { sizeof (KS_DATARANGE_VIDEO), 0, // Flags D_X * D_Y * 2, // SampleSize 0, // Reserved // MEDIATYPE_Video STATIC_KSDATAFORMAT_TYPE_VIDEO, // MEDIASUBTYPE_MJPG, 0x47504A4D, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71, STATIC_KSDATAFORMAT_SPECIFIER_VIDEOINFO }, TRUE, // BOOL, bFixedSizeSamples (all samples same size?) TRUE, // BOOL, bTemporalCompression (all I frames?) KS_VIDEOSTREAM_CAPTURE, // StreamDescriptionFlags 0, // MemoryAllocationFlags (KS_VIDEO_ALLOC_*) // _KS_VIDEO_STREAM_CONFIG_CAPS { STATIC_KSDATAFORMAT_SPECIFIER_VIDEOINFO, KS_AnalogVideo_None, // VideoStandard D_X, D_Y, // InputSize, (the inherent size of the incoming signal // with every digitized pixel unique) D_X, D_Y, // MinCroppingSize, smallest rcSrc cropping rect allowed D_X, D_Y, // MaxCroppingSize, largest rcSrc cropping rect allowed 1, // CropGranularityX, granularity of cropping size 1, // CropGranularityY 1, // CropAlignX, alignment of cropping rect 1, // CropAlignY; D_X, D_Y, // MinOutputSize, smallest bitmap stream can produce D_X, D_Y, // MaxOutputSize, largest bitmap stream can produce 1, // OutputGranularityX, granularity of output bitmap size 1, // OutputGranularityY; 0, // StretchTapsX 0, // StretchTapsY 0, // ShrinkTapsX 0, // ShrinkTapsY 333333, // MinFrameInterval, 100 nS units => 30 fps 2000000, // MaxFrameInterval, 100 nS units => 5 fps 16* 5 * D_X * D_Y, // MinBitsPerSecond; 16* 30 * D_X * D_Y // MaxBitsPerSecond; }, // KS_VIDEOINFOHEADER (default format) { 0,0,0,0, // RECT rcSource; 0,0,0,0, // RECT rcTarget; D_X * D_Y * 16 * 30, // DWORD dwBitRate; 0L, // DWORD dwBitErrorRate; 333333, // REFERENCE_TIME AvgTimePerFrame; sizeof (KS_BITMAPINFOHEADER), // DWORD biSize; D_X, // LONG biWidth; D_Y, // LONG biHeight; 1, // WORD biPlanes; 16, // WORD biBitCount; FCC_FORMAT_MJPG, // DWORD biCompression; D_X * D_Y * 2, // DWORD biSizeImage; 0, // LONG biXPelsPerMeter; 0, // LONG biYPelsPerMeter; 0, // DWORD biClrUsed; 0 // DWORD biClrImportant; } }; Tag: WDF WMI problem Tag: 78216
  - 12
    - SmartCard Reader Driver Hi, I'm trying to modify the PSCR sample DDK to make a virtual PCSC driver. I removed all HW dependencies from PSCR. Now I see the Smart Card Resource Manager opening a handle to my driver, but one of the last IRPs gets cancelled due to an invalid code forwarded to SmartcardDeviceControl. I am receiving it from Resource Manager after QUERY_DEVICE_RELATIONS... Any ideea how to troubleshoot this? Is there a better place to ask Smart Card specific questions? For details please see the log bellow: SMCLIB!PscrCreateClose: Open PSCR!PscrPnPDeviceControl: Exit c00000bb PSCR!PscrPnPDeviceControl: Enter PSCR!PscrPnPDeviceControl: Default 7 PSCR!PscrPnPDeviceControl: Exit c00000bb SMCLIB!PscrDeviceIoControl: --------- 860aa448 SMCLIB!PscrDeviceIoControl: IRP - 860aa448 Major - 0x0 Minor - 0x0 SMCLIB!PscrDeviceIoControl: SmartcardDeviceControl - status : 0 SMCLIB!PscrDeviceIoControl: --------- 860aa448 SMCLIB!PscrDeviceIoControl: IRP - 860aa448 Major - 0x310008 Minor - 0x60150 SMCLIB!PscrDeviceIoControl: SmartcardDeviceControl - status : 0 SMCLIB!PscrDeviceIoControl: --------- 860aa448 SMCLIB!PscrDeviceIoControl: IRP - 860aa448 Major - 0x310008 Minor - 0x10100 SMCLIB!PscrDeviceIoControl: SmartcardDeviceControl - status : 0 SMCLIB!PscrDeviceIoControl: --------- 860aa448 SMCLIB!PscrDeviceIoControl: IRP - 860aa448 Major - 0x310008 Minor - 0x10101 SMCLIB!PscrDeviceIoControl: SmartcardDeviceControl - status : 0 PSCR!PscrPnPDeviceControl: Enter PSCR!PscrPnPDeviceControl: Default 7 PSCR!PscrPnPDeviceControl: Exit 0 SMCLIB!PscrDeviceIoControl: --------- 8645db28 SMCLIB!PscrDeviceIoControl: IRP - 8645db28 Major - 0x310008 Minor - 0x7fff0001 PSCR!CBCardTracking: Enter PSCR!CBCardTracking: Exit SMCLIB!PscrDeviceIoControl: SmartcardDeviceControl - status : 103 SMCLIB!PscrDeviceIoControl: --------- 863ece00 SMCLIB!PscrDeviceIoControl: IRP - 863ece00 Major - 0x310028 Minor - 0x7fff0001 SMCLIB!PscrDeviceIoControl: SmartcardDeviceControl - status : 0 PSCR!PscrCancel: Enter PSCR!PscrCancel: Completing wait for Irp = 8645db28 PSCR!PscrCancel: Exit SMCLIB!PscrCleanup: Enter SMCLIB!PscrCleanup: Completing IRP 863ece00 SMCLIB!PscrCleanup: Exit SMCLIB!PscrCreateClose: Close IRP 2 Many thanks in advance for any comment.... Mircea Tag: WDF WMI problem Tag: 78209
  - 13
    - SDBUS.SYS on WinCE vs XPSP2 I'm having a little trouble with SDBUS.SYS on XP SP2. I have an SDIO device which works great on WINCE 5.0. However, when I use the same device on an Windows XP SP2 desktop, the device stops responding. I traced the SD bus and found that after SDBUS reads the CIS on function 0 and 1 and FBR on function 1, it then issues a CMD5, which hangs the device. Under CE, this CMD5 is missing and subsequently allows the device to continue operate. I have the feeling that the WINCE version of SDBUS is newer than the one on XP. Is there an update to the XP version of SDBUS.SYS which can help me avoid this problem? Thanks, ((&-> Tag: WDF WMI problem Tag: 78204
  - 14
    - MiniRdr and NAMED_PIPE RDBSS call my CreateVNetRoot for NAMED_PIPE even if I do not support it, after returing STATUS_NOT_SUPPORTED it asks the same to LanmanRedirector. It happens playing a file with wmplayer. wmplayer start playing the file but the user interface start responding only after a lot of call to Lanman hav been returned... I need the RDBSS to ask me for NAMED_PIPE once thanks ale Tag: WDF WMI problem Tag: 78203
  - 15
    - NdisOpenConfigurationEx fails on Windows Vista Beta2(5308 build) Hi Everyone, I am developing an NDIS6.0 network driver for Vista Beta2. I try to use NdisOpenConfigurationEx function to get a configuration handle that allows access to configuration parameters in the registry. I supply the NdisHandle parameter obtained in MPInitialize call back function. NdisOpenConfigurationEx fails with status code c000000d(STATUS_INVALID_PARAMETER). This works fine on Beta1. Could any one throw some light on it. Thanks in Advance. Chiranjeevi. Tag: WDF WMI problem Tag: 78199
  - 16
    - Filter driver on Tablet PC or Embedded XP I have a filter driver that sits above the UDF filesystem to interecept reads. The filter is part of a secure video product. Does anyone know if a filter driver will work on the Tablet PC and/or Embedded XP OSes? Everything reads like they will work on these platforms. How about Windows CE? Doesn't look like it will. Is there a similiar mechanism on windows CE or will I have to re-engineer to figure out how I can solve the problem? Thanks in advance! -- Still trying to build a perpetual motion machine Tag: WDF WMI problem Tag: 78192
  - 17
    - Problem of receiving TCP packets on Virtual adapter Hi, I am porting IM driver on WM5.0. I have created a virtual miniport with lower metric value so that upper layer application bind with that VA. So all the packets (TCP/UDP) are coming to that VA with IP and MAC of that VA. The IM then spoof the IP and MAC and put the original miniport IP and MAC and send the packet to the original miniport(TNETWLN1). When original miniport receive the packet IM change the IP and MAC of original to the VA and indicate to the upper layer protocol. This works fine in case of UDP packets but TCP packets are not accepted by TCP/IP stack. I check the MAC, IP, Port and CheckSum of TCP packet after spoofing it back. I also checked the MP binding it is fine too. Here what can be the problem. Somebody has find this kind of problem ever. Any kind of help is appreciated. Thanks Rajat Tag: WDF WMI problem Tag: 78190
  - 18
    - How to change the resource requirement of device in driver? Hi, How to change the resource requirement of device in driver? I am writing a Miniport driver. After the card inserted, the ResourceRequirementList can be read in HLM/SYSTEM/CurrentControlSet/ENUM/PCI/VEN... from Registry. REG_RESOURCE_REQUIREMENTS_LIST is shown as below, Alternative... Resou... Descrip.. Device.. 1 1 1 Memory 1 2 1 Memory 1 3 1 Memory 1 4 1 Intererupt The third memory is not need, and I want to move it. As the DDK said, I/O manager gives a chance to change the resource requirement. When FDO gets IRP_MN_FILTER_RESOURCE_REQUIREMENTS of IRP_MJ_PnP. I did this successfully, however, for doing this, I add the AddDevice routine and IRP_MJ_PnP dispatch routine, as a result, The MiniportInitialize function is not called. Who can give me some suggestion? Thanks! Tag: WDF WMI problem Tag: 78187
  - 19
    - how the vmware windows virtual machine connect the usb device from the host machine ? When you run VMware on a Windows XP host, and a WindowsXP virtual machine runs in the VMware, now you plugin a new usb device to the host, the found new device wizard of the host machine will say that the host found a new device named VMware USB Device whose Hardware ID is USB\Vid_0E0F&Pid_0001. Then the host will load the VMware USB Device driver, which is a USB client driver. And the VMware virtual machine will detect the real usb device type and install the correct device USB client driver. When you unplug the usb device from the virtual machine, the host machine will replace the VMware USB Device driver with the correct device driver. I want to know how the whole process happens. Why the host pnp manager load the VMware usb client driver other than the correct device driver when detecting any usb device with the running of VMware? And how it replaces the VMware usb client driver with the correct device driver when you unplug the usb device from the virtual machine? The process likes a magic to me. I want to know how. The more detailed, the better. Thank you all! Tag: WDF WMI problem Tag: 78186
  - 20
    - Incorrect INF - Installer File ? Thanks for the info. Sorry that my answer is so late, but I post things @codecomments.org, which is not very stable -- Markus09 ------------------------------------------------------------------------ Posted via http://www.codecomments.com ------------------------------------------------------------------------ Tag: WDF WMI problem Tag: 78184
  - 21
    - [Q] Acquiring the same spinlock when it was previously acquired I'm seeing something strange in an NDIS miniport which uses a single spinlock. For example, in the driver's MPSendPackets() function: 1. The spinlock is acquired before calling processing the packets in the packet array. 2. MPSendPackets() calls SendPacket() to send each packet in the packet array. 3. SendPacket itself acquired the same spinlock, processes the send request and then releases the spinlock. 4. After all packets in the packet array have been processed, MPSendPackets() releases the spinlock. So, this driver is nesting spinlock aquires/releases while the same spinlock has previously been acquired. I would have throught this would have resulted in a deadlock, which doesn't happen. Is there a reference count maintained each time a spinlock is acquired, such that it is only released when the count becomes 0? I didn't see any mention of this in the DDK docs, but that seems to be what is happening. Thanks! Tag: WDF WMI problem Tag: 78175
  - 22
    - Accessing PCI device behind a non-transparent bridge. I have some questions on accessing a PCI device behind a non-transparent bridge. I have a PCI bridge that originates a PCI like bus on its secondary device. This bridge connects to the host through the PCI slot(32-bit 33Mhz). The bridge, though, is a non-transparent bridge. This secondary bus allows regular PCI devices to be plugged into the bus. I have a PCI device that sits on the secondary bus. I have a driver for this device that works if the PCI device is plugged into the host's PCI bus. I am thinking that the same driver does not work when the PCI device is plugged to the secondary bus. In particular, since the bridge terminates all memory transactions on the secondary bus (including MSI and interrupt transactions) and does not forward to the primary interface, the driver as it is will not work. SO I have the following solution. Write a bus driver that talks to the bridge through the host PCI interface. This bus driver enumerates the PCI-like bus on the secondary side , will detect my device and initialize it. So far so good. The device I/F is such that its DMA ranges are programmed using configuration accesses. This is where the driver model breaks down. Even if my bus driver takes the config accesses and forwards them to the secondary side as configuration accesses on the secondary side, because the driver programs the ranges as host ranges which cannot be reached from the secondary side. THis means I cannot reuse the driver. Ideally, I want to be able to have the same driver binary in both PCI and secondary bus case. In the secondary bridge case, I want to be able to allocate shadow ranges on the host side that get filled in when the PCI device does DMA (or copied from) on the secondary side. I have another related question. Windows claims to run on architectures with non-transparent bridges(such as from Intel or DEC). If a PCI-to-PCI bridge is nontransparent can Windows reuse the same driver as in the traditional PCI case?. If so, how is this done especially if the secondary side cannot access the host memory ranges. Thank you, RK Tag: WDF WMI problem Tag: 78167
  - 23
    - Bluescreen 0x0000007E Hi! I'm having some problems handling BusRelations. I keep getting a bluescreen (0x0000007E) as soon as I return something to the PnP manager. First, I create a device in an IOCTL: status = IoCreateDevice(..., &myChildDevice); ... myChildDevice->Flags &= ~DO_DEVICE_INITIALIZING; pExt->BusInfo.AChildDevice = myChildDevice; IoInvalidateDeviceRelations(pExt->Pdo, BusRelations); And then I handle the IRP_MN_QUERY_DEVICE_RELATIONS/BusRelations IRP: PDEVICE_RELATIONS pDeviceRelations = (PDEVICE_RELATIONS)pIrp->IoStatus.Information; if(pDeviceRelations) { ExFreePool(pDeviceRelations); } pDeviceRelations = (...)ExAllocatePool(PagedPool, sizeof(DEVICE_RELATIONS)); ... pDeviceRelations->Count = 1; pDeviceRelations->Objects[0] = pExt->BusInfo.AChildDevice; pIrp->IoStatus.Status = STATUS_SUCCESS; pIrp->IoStatus.Information = (ULONG_PTR)pDeviceRelations; In a nutshell, this is all that I do. If I comment out the last row, there's no bluescreen. Any ideas? Oh, and there are some blanks above. When done I pass the IRP through the stack, I always check that memory is allocated properly, I always check status codes etc. Thanks in advance, Nille Tag: WDF WMI problem Tag: 78165
  - 24
    - Why is the HCT preventing my driver from unloading? The problem: I've developed a USB WDM driver that doesn't fall in any device category, so I'm trying testing it with the "universal" test suite. As soon as I select it in the HCT "Test Selection Wizard" window, and I click on ok, the driver will not unload any more. What's happening: knowing that this kind of problems are caused by leaky references to the device or driver object, I did my homework following the directions provided by Eliyas ("Debugging a Failed Driver Unload" in the WinDbg online help), looking for a mismatching ObReferenceObject/ObDereferenceObject couple in my driver. I indeed found one, but it's not in my driver: it's in kitdevis.sys, that appears to be part of the HCT distribution. It seems that for some reason, between two calls to my IRP_MN_QUERY_CAPABILITIES handler, kitdevis.sys increments the reference counter of my device obejct, and after that it never decrements it. A thing to mention is that I'm borrowing the PNP handling code from Walter Oney's WDM book, without any modification. Another thing to mention is that I never experienced any problem in unloading the driver, in months of developing and testing. It only happens when I click "ok" in the Test Selection Wizard. Now, I know I must be doing something very stupid, because it's impossible that the HCT suite has such a macroscopic problem, but I've no idea what. Does anybody know what could cause this behavior? Thanks in advance! Loris Tag: WDF WMI problem Tag: 78164
  - 25
    - Saving Device Parms to the registry Is there any recommended maximum size of data that can be saved to the registry rather than saving to separte on disk file. For instance for my device to work I might need 6K bytes of radio PHY parameter data to program into the card. Is it OK to save that much data to a single Binary Value under my parameter key in the registry? How about in multiple Binary Values? thanks tom Tag: WDF WMI problem Tag: 78144
- Next
  - 1
    - Programmatically power up or down a particular device [on a hotplug bus] Is there any documented way to programmatically change the power state of a device (i.e. power off or power on) from usermode? (I'm not particularly knowledgeable about programmatically controlling power management...) In particular, I'm looking to be able to power on or power off an arbitrary USB or 1394 device (i.e. not a device I wrote the driver for). For example, I might have an externally powered USB or 1394 device that is attached to a battery backup system that is separate from the battery backup system the computer is on. I can determine whether the battery backup system that the external device is on is low on power or not, but I need a way to gracefully shutdown the appropriate device before an impending power loss. Because the computer itself is on a different battery system (say for the sake of argument that it is a higher capacity battery system), I don't want (or need) to shut down the computer entirely, just the affected devices. Assume for the moment that I have control over any applications that might be using said devices and can make sure that they relinquish usage before I try to shutdown the device. One option I see is to request a graceful device removal (e.g. CM_Request_Device_Eject_Ex), since the devices are going to be on a hotpluggable bus, but this seems suboptimal for what I'm looking for. Tag: WDF WMI problem Tag: 78143
  - 2
    - Q) NDIS_STATUS_PENDING for a MiniportSetInformation and NdisMSetInformationComplete. Dear all, I'm developing NDIS miniport driver for Win2K and WinXP. If a Miniport D/D return NDIS_STATUS_PENDING for a MiniportSetInformation, it will need to return the final status for the NdisMSetInformationComplete. However, the NdisMSetInformationComplete does not have NDIS_OID or Informationbuffer that was from MiniportSetInformation. So, I think it is impossible to identify what the paired MiniportSetInformation is if there were multiple MiniportSetInformations with NDIS_STATUS_PENDING. Q) Between returning NDIS_STATUS_PENDING for a MiniportSetInformation and NdisMSetInformationComplete, is it guaranteed not to issue another MiniportSetInformation from the Window operating system? This can apply to MiniportQueryInformation/NdisMQueryInformationComplete as well. Have a nice weekend. Thank you. // Daum Tag: WDF WMI problem Tag: 78138
  - 3
    - drivers location on x64 Hi Where are installed drivers stored on the Windows x64? The service key ImagePath still points to the system32\drivres directory, but you cannot find drivers there. TIA Andrew Tag: WDF WMI problem Tag: 78137
  - 4
    - bug found only in signed printer driver, how to debug? I recently got my printer driver signed. After getting signed, our QA group found a bug. When I (and then they) tried to reproduce it, we found it only happens with the signed version. The unsigned version does not have the problem (it's a spooler crash when doing a test print as part of the install; test prints after install and normal application prints work fine). So I'm wondering how to debug this. I can't very well submit a debug version of the driver to be signed (cause then it will be part of windows update and all our customers will get this debug driver). And debugging the non-debug, signed, version of the driver is less than productive. Any ideas? Thanks, ScottR -- Scott Robins Tag: WDF WMI problem Tag: 78136
  - 5
    - UpdateDriverForPlugAndPlayDevices does not remove all devices. Hi, I have a device driver that has many virtual devices that have been added through PnP via the AddDevice DriverObject Function call via the PnP system. I can have up to 255 of these devices for this driver. When I have created a new version of this driver, I update it with the system call, "UpdateDriverForPlugAndPlayDevices()". I was hoping that this call would force a call to my driver to "REMOVE_DEVICE" one at a time until there are no devices. At this time the PnP system would call my unload routine. Then when the PnP system calls the AddDevice routine the new driver would be loaded. It does work this way if I only have one or two devices on the driver. However, If I have more devices than this, then the PnP system sends the "REMOVE_DEVICE" IOCTL for a few of them, then calls the AddDevice for the devices that were just removed. Then it repeats this until all of the devices have been removed and re-added. Consequently, the number of devices never reaches zero and the unload routine is never called. At the end of the driver update, a reboot is required, because the previous version of the driver is still the running driver. My question is this: Is there anyway to tell UpdateDriversForPlugAndPlayDevices to remove all the devices before adding them back? Thanks in advance, -David G Tag: WDF WMI problem Tag: 78134
  - 6
    - standby and hibernation How much will the typical laptop tax the battery if it goes to standby instead of hibernation. Is it significant? Will the standby mode still secure? I mean can someone get details of my computer or write a file (if I dont have antivirus/firewall, for example). I think hibernate is safest in this respect? thanks, Raj Tag: WDF WMI problem Tag: 78126
  - 7
    - System hang Hi all, got a nasty system hang issue that I have about run out of ideas on: We only get the hang on an Asus A6000 U, we havent seen it on any other laptop, and, in fact, the driver for this device has been WHQLed in various versions for the last 6 months or so. The device is a PCCard device with an FPGA interface (It is also made by us). We are using WinDbg on a 1394 cable to debug. The hang happens with release drivers, and debug drivers that have no DbgPrinting. With a lot of DbgPrinting, the laptop doesnt hang. With just one DbgPrint at the very start of the Isr, wew do get tha hang, but WinDbg does not show a continuous trace, so this is not an unhandled interrupt as the ISr is not getting called. We cannot break into the hung laptop using Ctrl+Break. We can also not generate a user crash via the RightCtrl + Scroll Lock x 2 technique. Tag: WDF WMI problem Tag: 78125
  - 8
    - Context for Temporary files in case of MSWORD Hi All, I am writing a file system driver for logging purpose. In it, i need to save the context of all the intermediate files formed in case of MS Officce Document. For example in case of MS Word alot many temporasry files with name as ~wr*****.tmp are formed. Now i need to save the refernce that all these files are formed by this particular word document that i have created. So my question is, alothugh some of these files are renamed inbetween (so not a problem to save referce to original file for them), but for all others, i m not able to relate it with the original document. Please help me in this. Regards, Shreshth Luthra Tag: WDF WMI problem Tag: 78121
  - 9
    - Bluetooth DDI [Getting Interface via IRP_MN_QUERY_INTERFACE] Does anyone has any chance working on Bluetooth DDI so far? STATUS_NOT_SUPPORT (0xc00000bb) returned by IoCallDriver when I pass down IRP_MN_QUERY_INTERFACE irp to lower driver stack PDO (which is BTHPORT). The driver is enumerated by BTHPORT all right, *I assumed*. One way or another, I may get STATUS_INVALID_DEVICE_REQUEST with various attempt to send IRP_MN_QUERY_INTERFACE. Doron suggested that I might have the interface structure not well formed. I'm not sure what may the interface structure I need to form. I don't think I'm doing anything different to query interface. Has anyone had any success with getting Interface, or working on anything else, with Bluetooth DDI? Much Appreciated. ========== DEFINE_GUID(GUID_BTHDDI_SERVER_INTERFACE, 0x2caf6042, 0x3468, 0x4e46, 0xbf, 0xd6, 0x86, 0xd4, 0xbe, 0xf0, 0xb, 0x71); PINTERFACE Interface; irpStack->MinorFunction = IRP_MN_QUERY_INTERFACE; irpStack->Parameters.QueryInterface.InterfaceType = (LPGUID) &GUID_BTHDDI_SERVER_INTERFACE; irpStack->Parameters.QueryInterface.Size = sizeof(INTERFACE); irpStack->Parameters.QueryInterface.Version = 1; irpStack->Parameters.QueryInterface.Interface = (PINTERFACE) Interface; irpStack->Parameters.QueryInterface.InterfaceSpecificData = NULL; ========== Thanks RichardMAN Tag: WDF WMI problem Tag: 78118
  - 10
    - How to write a ADC ,I2C,SPI driver in wince5.0 ? hi, We are planning to develop the following drivers for windowsCE5.0: 1,driver for built in ADC 2,driver for I2C to drive i2c DAC ie MAX5841 3,driver to support serial flash for the density of 4mb using SPI(AT25F4096) The drivers are for the samsungs s3sc2410 RISC microprocessor.i searched in platformbuilder help and there seems to be no sample code for these drivers? Since i am new to wince i am totally lost...can anyone please tell me if there is some sample driver available which i am missing out or if someone has worked on these drivers please let me know how to develop them or where to find some tutorial for this..... Thankyou Tag: WDF WMI problem Tag: 78111
  - 11
    - STOP WZCSVC Hi! I use NDISUIO to look for the SSID avaiable and setting them, but I must stop WZCSVC and I don't know how to do it. Can you illustrate me how to do it? Thanks Giulio Tag: WDF WMI problem Tag: 78097
  - 12
    - Vista graphics question Hi, I just downloaded the Feb Vista CTP Beta. I have installed in the system a NVidia Quadro FX 3400 video card which has a beta Vista driver and the "aeroglass" display subsystem seems to be working correctly. The display driver in Hardware manager claims to have 2 drivers for the NVidia card, a video card "miniport" driver in the Drivers directory and a .dll display driver in the system32 directory. This sounds just like Win XP/2000. However when I attach a debugger to the system, the only file that I see load is the video card miniport driver. Does this mean that the display driver is not used, and if so why does NVidia have a display driver? Tag: WDF WMI problem Tag: 78096
  - 13
    - PsSetCreateProcessNotifyRoutine Hi, When my driver receives a notification that a process has been created, is the process held in a suspended state until the notification handler routine completes? Or is the notification asynchronous? Thanks, Rich Tag: WDF WMI problem Tag: 78087
  - 14
    - UpdateDriverForPlugAndPlayDevices fails ERROR_FILE_NOT_FOUND I am calling UpdateDriverForPlugAndPlayDevices( ) to install driver for my (virtual) device, whose HW id is: *MyDevice - this just copies .sys into system32\drivers folder but the API fails with error code 2 (The system cannot find the file specified.). INF path is correct (of course, sys file is copied to target folder reading INF file). Same INF file installs driver correctly if I go through 'Add Hardware' wizard. What could be issue? Is it becaz I don't have physical device? But I specified *MyDevice...I am confused.. -- ++Sathya Tag: WDF WMI problem Tag: 78085
  - 15
    - Using INetCfgBindingInterface for NIC but what about DUN? I need to test for enabled bindings of my NDIS Intermediate Driver under W2K,XP,Vista. Starting from the netcfg sample this works fine now for Network Interfaces. But INetCfgBindingInterface seams not to enumerate Bindings of my Dialup entries. Any hints? Thomas Kluge T-Systems Enterprise Services GmbH Tag: WDF WMI problem Tag: 78081
  - 16
    - Using INetCfgBindingInterface for NIC but what about DUN? I need to test for enabled bindings of my NDIS Intermediate Driver under W2K,XP,Vista. Starting from the netcfg sample this works fine now for Network Interfaces. But INetCfgBindingInterface seams not to enumerate Bindings of my Dialup entries. Any hints? Thomas Kluge T-Systems Enterprise Services GmbH Tag: WDF WMI problem Tag: 78080
  - 17
    - NDIS + Visual Studio 6 (C++ environment) - raw ethernet packet send/receive Hello people, I'm about to program an application that uses raw ethernet packets to transmit and receive information. I want to use the NDIS driver therefore. I already got WinDDK, and took a look at the c-example (ndisprot). But my question is, how can I implement this in a Visual Studio 6 environment??? Temporary I used Winpcap to send and receive my packets. Even though it's buggy it works, but it's not as professional as with a protocol driver, that has to be installed, and can be activated or deactivated. Could anyone please give a good advise on how to realize this as well as possible?? My best regards! Cheers! Tag: WDF WMI problem Tag: 78079
  - 18
    - All the possible return values of "rundll32 printui.dll,PrintUIEnt I am not sure this is the right place to ask this question. Anyway, do you know all the possible return values of "rundll32 printui.dll,PrintUIEntry ..."? Thanks for your help in advance. Tag: WDF WMI problem Tag: 78075
  - 19
    - macro taking variable args Hi , ISO C defines macros that can take variable arguments. The code below compiles on linux but fails with DDK XP. Do I have a similar option in windows. #define AMZ_OSAL_debug1(format, ...) \ {\ KdPrintEx((DPFLTR_IHVDRIVER_ID, DPFLTR_TRACE_LEVEL, \ "DEBUG LOG %s, line-%d%::", __FILE__, __LINE__ ));\ KdPrintEx((DPFLTR_IHVDRIVER_ID, DPFLTR_TRACE_LEVEL,\ format, __VA_ARGS__ ));\ KdPrintEx((DPFLTR_IHVDRIVER_ID, DPFLTR_TRACE_LEVEL,\ "/n"));\ } Thanks. Nitin Tag: WDF WMI problem Tag: 78072
  - 20
    - STA deauthenticated while scanning Hi everyone, I am writing a 802.11 network miniport driver and having a problem as follows. My driver is running under Windows XP SP2 and can associate with specified BSS without problems. However, the OID_802_11_BSSID_LIST_SCAN requested per minute by WZC really annoys because sometimes when my driver switches channel to scan, AP cannot get ACK frame from my NIC and decides to send deauthenciation frame. Could anybody tell me how you solve this problem? Regards, David Tag: WDF WMI problem Tag: 78069
  - 21
    - (about USB autorun ¹ØÓÚUSB autorunÎÊÌâ) Dear friends: I have realize usb autorun in WinXP, (I emulate a cdrom with a usb disk on mass storage protocol.), but on Win2000, I can emulate a cdrom with a usb disk, but the autorun program can't be execute when the usb device was plug in. I have test a usb cdrom-box, when the cdrom was put to the usb cdrom-box, I also can't be executed by win2000, why? thank you very much. Best Regards Mike Han Ç×°®µÄÅóÓÑ£º ÎÒÔÚwinxpÉÏÊµÏÖÁËusb autorun(ÊÇÔÚMass StorageÐÒé»ù´¡ÉÏ²ÉÓÃÓÃUÅÌµÄ·½Ê½À´ÊµÏÖµÄ)£¬ ÔÚwinxpÏÂÎÞÎó£¬µ«ÔÚwin2000ÏÂ£¬ËäÈ»ÎÒÒÑ³É¹¦Ê¶±ðÎª¹âÅÌ£¬²¢¿É²Ù×÷£¬µ«ÊÇ¾Í ÊÇ²»ÄÜautorun£¬¼´µ±UÅÌ²åÈëPCÊ±£¬¿ÉÒÔÕýÈ·Ê¶±ðÎªÒ»¸öcdrom,µ«ÊÇ²»ÄÜ×Ô¶¯Ö´ÐÐÉÏÃæµÄautorun³ÌÐò¡£ ÎÒÔø¾ÄÃÒ»¸öusb ½Ó¿ÚµÄ¹âÅÌºÐÀ´×öÊµÑé£¬Ò²·¢ÏÖÀàËÆÎÊÌâ£¬win2000ÏÂ¶Ôusb¹âÅÌºÐÒ²²»Ö§³Öautorun,µ«ÎÒ¿´µ½ÓÐÐ©²úÆ·Ò²ÊÇ²ÉÓÃÐéÄâcdrom·½Ê½ÊµÏÖÁËwin 2000ÏÂµÄautorun£¬²»ÖªµÀÊÇÎªÊ²Ã´ £¬Ï£ÍûÓÐÕâ·½Ãæ¿ª·¢ ¾ÑéµÄÅóÓÑÖ¸µãÃÔ½ò£¬Ð»Ð»¡£ mikehan Tag: WDF WMI problem Tag: 78067
  - 22
    - USB device and iSerialNumber As per WHQL device requirements either we implement iSerialNumber as unique or not at all. If we implement unique serial number and we get assigned COM port numbers, those will be going up all the time on new device. How to take care of this situation in manufacturing process or any support PC which can see thsousands of these devices? Is there any provision to control this scenario on some pc's? iSerialNumber will be great feature for our end users which we want to provide witout creating any chaos in our support site. Thanks, - Sujit Tag: WDF WMI problem Tag: 78049
  - 23
    - SCSI Passthrough Using Write Buffer Command Hi everyone, We are trying to send vendor-specific data to an ATAPI device we have designed, using the WRITE BUFFER command (SCSI op code 0x3B) through an application running under WIN 2000. The function uses the IOCTL_SCSI_PASS_THROUGH_DIRECT, just like the spti.c example in the MSDN library. The protocol is working but the only data we get is the CDB[] array repeated over and over, not the data buffer specified in sptdwb.sptd.DataBuffer. Can anyone suggest what is wrong, or where to look for a solution? Thanks in advance, Garet Tag: WDF WMI problem Tag: 78047
  - 24
    - XP kernel builds Hi all. I don't know if this is the right forum for this question, in any case... I have a machine issuing a replicable BSOD in my driver, that I'm not able to replicate on other machines. This machine is running XP SP2 (well, WinDbg says it's SP2), UP kernel, and the file version of ntoskrnl.exe is 5.1.2600.2622 (xpsp.050301-1521) while my laptop (and other machines with a UP kernel) have ntoskrnl.exe version 5.1.2600.2622 (xpsp_sp2_gdr.050301-1519). Does anyone here have any idea what is that kernel (xpsp.050301-1521) running on this machine?? Have a nice day GV Additional info (from Windbg) ----------------------------- BSOD machine: Windows XP Kernel Version 2600 (Service Pack 2) UP Free x86 compatible Product: WinNt, suite: TerminalServer SingleUserTS Built by: 2600.xpsp.050301-1521 My laptop: Windows XP Kernel Version 2600 (Service Pack 2) UP Free x86 compatible Product: WinNt, suite: TerminalServer SingleUserTS Built by: 2600.xpsp_sp2_gdr.050301-1519 Tag: WDF WMI problem Tag: 78046
  - 25
    - remove USB Device in C++ Hello I want to remove a USB device (external Disk) with a program in C++ knowing only the drive letter. Anybody can help me ?? Jeff Tag: WDF WMI problem Tag: 78043

Hi, I have created a WMI instance using WdfWmiInstanceCreate and 'Register'
is set TRUE in the instanceConfig. When i use the WMICodeCreator tool to
browse the WMI namespace, i can't see my class. My code is based on the
FireFly example.

Should this tool show my new class? Where else can i view WMI classes?

Where do i look to debug this?

Thanks
Laurence

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Re: WDF WMI problem by Eliyas

Eliyas
Tue Apr 11 19:05:40 CDT 2006

Did you register your mof resource file (WdfDeviceAssignMofResourceName)?

--
-Eliyas
This posting is provided "AS IS" with no warranties, and confers no rights.
http://www.microsoft.com/whdc/driver/kernel/KB-drv.mspx

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