Virtual Device Driver Basics

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- Previous
  - 1
    - NdisGetReceivedPacket in IM driver Hi all Can I just omit the call to NdisGetReceivedPacket in Ptreceive Handler? Can I just use the NdisTransferData call to get the packet in my IM driver? (I am currently using both of above) Are there any NIC’s which will only send the packet in response to NdisGetReceivedPacket and not to NdisTransferData? Thanks in advance Hardeep Tag: Virtual Device Driver Basics Tag: 46102
  - 2
    - To Microsoft Guys Hi all I was installing a Proxy server which uses an IM driver on windows 2003 server. It was an old version. (It woks pretty good on 2000) The system generated error message telling that the driver would not be loaded because it can make the system unstable ………but it allowed the bindings to be changed. This caused all the Network communication to stop. Even when I uninstalled the proxy program the bindings and the registry data for the drivers were still there.( I changed the registry entry in driver to make the miniport’s manually un-installable). My question is if Windows determines that the drivers will make the system unstable and will not load them, then why during installation it allows the bindings to be changed …….or why doesn’t it reverts back to the old bindings? Regards Hardeep Tag: Virtual Device Driver Basics Tag: 46101
  - 3
    - compilation errors in rpcdce.h i am trying to build drivers using win2003 ddk. i get compilation erros when including rpcdce.h. are there any fixes or patches for this? thanks Tag: Virtual Device Driver Basics Tag: 46099
  - 4
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  - 5
    - How to turn off dithering in (RDP) display driver When an application uses more colors that the video device can generate, the device driver (and/or GDI subsystem ?) for line objects (like text) approximates requested color to the nearest color device can generate or for solid brushes - simulates requested color by dithering (mixing colors in a pattern). In common situations the color simulation is a very useful but sometimes it gives unexpected effects when color of written text is the same as (or similar to) one of dithered colors of the background plane. The lowest color depth of the video device the worse visual effects we get - e.g. for 256 colors video driver for Win 2K Terminal server (based on RDP 5.0 protocol). In such case it could be very interesting to observe how display quality would improve (if any) when dithering will be turned off. But how to disable this function of RDP display driver? Is that any dedicated registry key which controls dithering? Or perhaps is any other way to disable dithering? Thanks in advance A. Tag: Virtual Device Driver Basics Tag: 46095
  - 6
    - wan intermediate driver problem Hi, I am writing a wan intermediate driver with TAPI support for Windows98 SE. When i install the driver, the installation goes on fine. But tapi calls do not happen. OID_TAPI_PROVIDER_INITIALIZE and ..SHUTDOWN gets called. But no other tapi oid's are getting called. Also, from a tapi application like tapi browser, lineInitialize returns success, but lineOpen fails. Any idea what is the problem, & where should i be looking for? Anand. Tag: Virtual Device Driver Basics Tag: 46087
  - 7
    - general printer driver question Hi Does someone have a solution how to implement a fax-printer driver that provides a virtual printer that you can share in the network? Today the problem is, that fax-drivers show the "enter fax number"-dialogs on the server and not on the computer that sends the fax. Now, this doesn't work... and I don't know if it's possible to solve this. MR Tag: Virtual Device Driver Basics Tag: 46085
  - 8
    - NETBIOS Name resolution request inside TDI filter Hi I have to get the remote machine name from NETBIOS request. Inside TDI filter, I wanted to know which remote p.c the user is trying to acccces, if it is not in the domain, I have to redirect the request Is there anyway I can do this, ie Netbios name resolution (UDP,137 I can get TDI_SEND_DATAGRAM request if the following is tru DNS Suffix Search List. . . . . . : xyz.com Connection-specific DNS Suffix . : xyz.com then I can intercept DNS query and can take appropriate action. But if there is no connection specific suffix associated, how can I get the remote machine name Please help me ASAP ThanX in advance Tag: Virtual Device Driver Basics Tag: 46076
  - 9
    - override FILE_FLAG_OVERLAPPED Hi, I'm working on a device driver which supports asynchronous (overlapped) I/O. However, overlapped I/O doesn't work if the user didn't set FILE_FLAG_OVERLAPPED when calling CreateFile(). I want to override this and "reopen" the file with FILE_FLAG_OVERLAPPED set. ReOpenFile() can solve this, but requires Windows Server 2003. Is there a solution for Windows 2000 / NT 4.0 ? TIA, Yair Tag: Virtual Device Driver Basics Tag: 46075
  - 10
    - Removing inf using SetupUninstallOEMInf Hi all I have written a uninstaller which uninstalls the driver first using SetupDi calls, then tries to remove the .inf and .pnf files through "SetupUninstallOEMInf". I get the installed oem* file name during installation using "SetupCopyOEMInf" My problem is "SetupUninstallOEMInf" fails with error 259(no more data is available). If I delete the oem*.inf and oem*.pnf files using "Deletefile" API, it deletes successfuly but GetLastError() gives error 259. This method successfully uninstalls the driver. Is this a proper method of removing inf files ? Can anybody please tell me the cause of error 259 Any help would be grealty appreciated Thanks in advanc Regard Prashanth Sheno Tag: Virtual Device Driver Basics Tag: 46073
  - 11
    - USB Port resets after S3 standby Hi, I have an application that automatically brings my computer out of standby and immediately issues a command to my USB-based (1.1) infrared blaster. The problem is that it seems Windows XP likes to "reset" the USB ports as it comes out of standby, which takes about 5-10 seconds. I know this, because I can hear the generic USB plug-in sound. And while the reset is happening, the command to the infrared device takes place and fails (because Windows doesn't think the device is present until the "reset" is complete). By the way, the USB device stays on all through the S3 standby (enabled with the correct motherboard jumper settings). So, this "reset" seems somewhat useless to me. Does anyone know how to stop Windows from re-registering the USB port after S3 standby? I'm sorry that this is more of a configuration question than a development one, but I'm not having any success elsewhere. Thanks, Aaron Tag: Virtual Device Driver Basics Tag: 46072
  - 12
    - Unidrv - Printable Area Hi All I've tried crazy values for the *CursorOrigin attribute in the GPD, but can't find any difference in the command stream that is generated. Does the *CursorOrigin attribute make sense only for the application or Unidrv adds commands in the stream for this attribute Regards Naresh Tag: Virtual Device Driver Basics Tag: 46071
  - 13
    - unable to load NDIS miniport driver hi all In the BSP under PLATFORM I have included a folder of the miniport driver under DRIVER and taken care of make, source and .def fil The project.reg and project.bib file is taken care too Query When I build the platform I am facing a build error saying "Don't Know How TO make <xxx>.def File Could u help me on that so that I am able to load the driver .dll file successfully Your views could be of great help to me Thanks in advanc Vivek B. Tag: Virtual Device Driver Basics Tag: 46066
  - 14
    - DIFxApp and Ndis IM driver install miniport problem I download DIFX and check DpInst.exe with Samples\Network.Intermediate (I simply put this exe file to driver root directory). DpInst incomplete install this driver - protocol part only The similar problem is observed with use DIFxApp in msi package. Tag: Virtual Device Driver Basics Tag: 46065
  - 15
    - ZwOpenFile helppppppppp Hi all ! I must Open a file in my Driver , The fragment code as below . But it always can not be opened .. Pls tell me why ?? Thanks in advance ! HANDLE fileOpen; OBJECT_ATTRIBUTES objAttr; UNICODE_STRING sLinkName; #define FILE_NAME L"C:\\test.out" RtlInitUnicodeString( &sLinkName, FILE_NAME); KIRQL oldIrql, newIrql = PASSIVE_LEVEL; KeRaiseIrql(newIrql,&oldIrql); InitializeObjectAttributes( &objAttr, &sLinkName, OBJ_KERNEL_HANDLE, NULL, NULL); LARGE_INTEGER nSize; IO_STATUS_BLOCK ioStat; NTSTATUS statusOpen = ZwOpenFile( OUT &fileOpen, IN FILE_READ_DATA | FILE_WRITE_DATA, IN &objAttr, OUT &ioStat, IN FILE_SHARE_READ, IN FILE_NON_DIRECTORY_FILE ); Tag: Virtual Device Driver Basics Tag: 46064
  - 16
    - DeviceIOControl I want to send IRP_MJ_DEVICEIOCONTROL to the stream driver from kernel mode. Is there function similar to DeviceIOControl or I have to send IRP to driver directrly? Tag: Virtual Device Driver Basics Tag: 46058
  - 17
    - Driver Chain Manager Hi, all! Did anybody write driver, compatible with DCM? Task is to write magnifier. I think, this will require tapping video driver. DCM establishes a set of rules, governing display driver interception. First of all, I should estimate complexity and volume of work. Now, I am trying to write test chain driver, intercepting DDI calls. Questions: 1) I can't compile driver, using WinDDK. Linker can't resolve DCM calls. I have dcmkrnl.dll, dcmuser.dll installed. I do not have any .lib files.(Do I need them or I can manege with .dll files?) What should me adjust? 2) Documention, that I have found, is insufficient. I don't have samples, that I can modify. Does anybody have samples or detailed documentation? 3) DCM is a relatively new component. Is it reliable enough? Yuri Tag: Virtual Device Driver Basics Tag: 46051
  - 18
    - NIC again How can I access registers on a NIC (RTL8029AS), specyfication gives me registers , but where are they, in some structure to write directly to NIC memory or what?? I'm workig and writing for win2k. Do I have to worry about PHY in my miniport driver?? Living it alone without managing would cause errors?? Tag: Virtual Device Driver Basics Tag: 46050
  - 19
    - Thread in driver ?? Hi All ! Anyone has worked with Numega Studio to write a Driver ? I must write a Driver filter for Com Port and synchronize system time between 2 computer via Com port ( call them Server and Client ). In the server side , there is one User application to active the driver and User can click on a Button in application to tell the Driver to implement synchronization time with the Client . In the Client side , There is no application , only Install Driver . And the Driver in the client side must use a Thread to detect when the Signal from server has come . SO, My task now is that I must create a Thread in Driver in order to detect when the signal has come to the Port . Pls explain , how can i do this work? I have create a Thread and put it in the DispatchCreate ( I use Numega to write driver ) . So now , How can I detect the Signal came to the Port by this Thread? Pls explain the Mechanism ! Thanks in advance ! Tag: Virtual Device Driver Basics Tag: 46043
  - 20
    - play sound How can I play some sound from WDM driver? I suppose to use KsCreatePin to open sound stream. But I could not set its parameters properly. At the moment I obtain a handle to sound driver (1st parameter) but the socond one cause a problem. Could anybody provide me with example of how to call this function. I want to play PCM/44.1kHz/stereo sound. Tag: Virtual Device Driver Basics Tag: 46042
  - 21
    - Generic Device Identifier I am attempting to create a program that will inspect our companies machines and determine any drivers needed for devices based on the hardwareID, DeviceID, etc. One problem that I have encountered is a case where the mouse hardware ID is a generic ID. For example, the hardware ID on a Dell laptop is listed with the generic identifier of: ACPI\PNP0F13,*PNP0F13 This could match any number of mouse drivers, i.e. Alps touchpad driver or Synaptic, etc. The correct driver, or at least the driver shipped with the unit is an Alps touchpad driver. Do cases where a generic hardware ID is listed (and I'm sure there must be others --USB drivers come to mind) mean that any driver/INF matching that ID --whether it is Alps or Synaptic-- will work properly? Secondly, is there a way to determine which is the proper manufacturer/driver to install? Many thanks! JW Tag: Virtual Device Driver Basics Tag: 46030
  - 22
    - Strange Shutdown Problem I'm writing a driver for a PCI-Express device, although the "-Express" part should be irrelevant for this discussion. I started the driver from Walter Oney's driver wizard, and the power management code is essentially unchanged from the wizard code. Windows XP SP1a Checked. (I haven't tried Free; I suppose I should...) I can load, unload, and restart the driver to my heart's content. On a system restart, power state goes to D3, driver unloads, everything is happy. But when I try to do a system shutdown, most of the time it gets everything shut down, my power state goes to D3, my driver (apparently) unloads, the kernel debugger disconnects and waits for a reconnect, the screen goes to blue, and that's it. The power doesn't go off. SOMETIMES a shutdown works fine, but most of the time, I get this hang. If our device is not plugged in, it shuts down OK. Anybody have any wild ideas for me to try? I don't THINK it is a driver issue; I don't think the debugger would disconnect if my driver were still running. Any "I saw this once and here's what I did" stories welcome. -- - Tim Roberts, timr@probo.com Providenza & Boekelheide, Inc Tag: Virtual Device Driver Basics Tag: 46028
  - 23
    - unable to load the NDIS miniport driver to my platform hi all i am developing a miniport driver.have created a dir named DRIVERS under PLATFORM of my BSP have included the make,source and .def file too.(the configuration selected is Tiny Kernel and have exported required features from catalog to support my driver)when i build the platform i get a build error saying don't know how to make .def file can anyone help me on that issue. the necessary details to be put in project.reg and project.bib file is also taken care off is there anything i am missing necessary to build the miniport driver thanks in advanc regards Vivek B. Tag: Virtual Device Driver Basics Tag: 46023
  - 24
    - How to get "LowerDeviceObject" in NDIS-WDM driver? Hi all, If I want to send a URB, followed by Oney's book : Chapter12 - "Working with the Bus Driver" - function SendAwaitUrb(), I should call IoBuildDeviceIoControlRequest (IOCTL_INTERNAL_USB_SUBMIT_URB, pdx -> LowerDeviceObject, ...). But now I want to send URB from a NDIS-WDM miniport driver, actually, I'm trying to modify the DDK sample "ndiswdm" which made by Eliyas, how can I get the "LowerDeviceObject" in the ndis miniport driver? Many thanks in advance, Barry Tag: Virtual Device Driver Basics Tag: 46015
  - 25
    - Windows test logo for Blackberry 6280 Software can't pass the indows test logo for my Blackberry. Tag: Virtual Device Driver Basics Tag: 46012
- Next
  - 1
    - ... what do they mean? Hi I'm using CPSUI and I've a question about the documentation... for TVOT_EDITBOX they write pOptParam[1]->IconID is used for specifying the size, in bytes, of both the edit box and the buffer pointed to by pSel in the OPTITEM structure. ... now, what does this mean? What's the "size of the edit box" ?? They size of the pSel-Buffer is clear... but the edit box size? thanks for help MR Tag: Virtual Device Driver Basics Tag: 46008
  - 2
    - TSENG ET3000 driver for Win98 (or win95) SVGA800x600, 256 colors, download where? Hi, I am searching a driver for TSENG ET3000 video card, for Win 98 (or Win95), that supports SVGA 800x600 resolution, and 256 colors. Does anybody knows where can I download it from? Thanks. Sorin. Tag: Virtual Device Driver Basics Tag: 46006
  - 3
    - Wheel tab on mouse control panel Does anyone know how the mouse control panel decides whether to show the "Wheel" tab? Our experiments seem to be indicating that, rather than using some kind of IOCTL_MOUSE_QUERY_ATTRIBUTES call, it may be looking at the PNP ID of the currently installed mouse (at least for PS/2). The symptom is that if we install our driver using a compatible ID (PNP0F13) the tab shows up, but if we install the exact same driver on a device/platform specific PNP (e.g. SYN0010) the tab goes away, with no other changes. If this guess is correct, is there some kind of registry key or something that would cause the Wheel tab to come back? Some of our customers are complaining about it going away. -- ../ray\.. Tag: Virtual Device Driver Basics Tag: 45989
  - 4
    - Driver for Enhanced Parallel Port? I am designing a widget that needs to send and receive data on the parallel port. I have designed it to be compatible with an EPP mode. I plan to use an Advantech PCM-937x running XPe to talk to it. On CE 3.0, using a PCM-5820, I was able to simply read and write to the port registers, but something tells me it will be harder on XPe. Does someone know how to do this? I plan to use a .NET framework, so C#, C++ or VB.NET are the programming environments I want to use Tag: Virtual Device Driver Basics Tag: 45987
  - 5
    - Loading two IM driver on PPC2003 Hi, I am trying to load two IM derivers on my PPC2003 (i-mate). Currently I am working with sample 'passthru' code given. I made a two copies of passthru one named as IMDRIVER it's miniport section named as IMDRV1 and second one is PASSTHRU and it's miniport section is PASS1. Now, I load IMDRIVER first and have seen that it works fine. than i load PASSTHRU , I found that in the protocolBindAdapter function of the PASSTHRU ,the miniport secion of IMDRIVER (i.e.IMDRV1) is not comming and therefore PASSTHRU does'nt load successfully over IMDRIVER. Can any body shade light on it ?? Any suggesstion will be a great help for me. Thanks Niraj Tag: Virtual Device Driver Basics Tag: 45967
  - 6
    - assigning USB device drive letters I have a problem with a bunch of newer computers running 2000/XP where USB removable devices take mapped drive letter F: (used for a legacy application). Is there a way to in XP to start assigning letters for removable devices at a certain letter (say U:). The removable devices can change so permanently changing the device letter in disk management only works until they plug in a new device (that has not yet been permanently assigned a letter) Tag: Virtual Device Driver Basics Tag: 45957
  - 7
    - Behavior of AVStream after returning STATUS_PENDING from Process routine Hi there, I am writing a filter-centric avstream mini-driver. However, I discover that the filter's process routine is kept entering even I have returned STATUS_PENDING. I have no other AttempProcess statement elsewhere in my code. What's wrong? I have tried to comment out the SetTimer statement of the AVStream avssamp sample... however, it still works by keep entering the Process routine... Thanks for your kindest help. Regards, Panda Tag: Virtual Device Driver Basics Tag: 45956
  - 8
    - _kernel_ is _WIN32 under windows equivalent to _KERNEL_ flag in linux? Tag: Virtual Device Driver Basics Tag: 45952
  - 9
    - Hel pn Wait_semaphore IFSMGR READ Hi all I am writing a VxD in 98. I am hooking to the IFSMGR functions. The requirement i Whenevr a File read happens The VxD will block the call and inform the ring 3 application. Then the ring3 app will decide whether to allow or deny the request. For communication between the ring0 and ring 3 i am using a shared event When i am blocking the Read request in the IFSMGR read I am using a Wait_Semaphore( Once the response comes We will signal the semaphore It is working for some files and system hangs for other Here is the pseudo code of what iam doin IFS_MGR REa Get The File Nam Copy the file name to a structur structure.SemaphoreHandle = Create_Semaphore(0) Put structure in Queu _VWin32_SignalEvent( shared event) Wait_Semaphore(structure.SemaphoreHandle) Allow/deny the reques End IFMGR REA whenever the ring 3 issues an ioctl to read the request Read from queu Whenevr the ring 3 is giving a respons Signal_Semaphore(structure.SemaphoreHandle This works fine with notepad But when i am accessign anything in c:\windows, All dll it is hanging Is the code is reentrant as in case of 2000 Thank Jone Tag: Virtual Device Driver Basics Tag: 45949
  - 10
    - How to getdrive letter of the USB flash drive Is it possible to know the Drive letter assigned the flash drive, after its plugged in, I know the vid/pid of the device, I just want to save some data to the flash drive, but need to know whats the drive letter, as it can be different on different machines. Waz Tag: Virtual Device Driver Basics Tag: 45948
  - 11
    - Does NTFS suitable for removable device such as SD (Security Digital) or MMC ? Hi Does NTFS suitable for removable device such as SD (Security Digital) or MMC ? Tag: Virtual Device Driver Basics Tag: 45947
  - 12
    - How to setting KSDATAFORMAT tructures for MPEG4?? Hi all For the datarange ,we can find KS_DATARANGE_MPEG1_VIDEO KS_DATARANGE_MPEG2_VIDEO for MPEG1 and MPEG2,how about MPEG4?? another members of KSDATAFORMAT what value should I set?? Thanks a lot Tag: Virtual Device Driver Basics Tag: 45945
  - 13
    - TDI_EVENT_DISCONNECT When ClientEventDisconnect() is called I know how to get the address object but how do I get the connection object? Tag: Virtual Device Driver Basics Tag: 45943
  - 14
    - How to let FAT and FAT32 available only, for Formatting SD in windows XP Hi I am writting a SD (Security Digital) driver for WinXP/Win2000, after SD driver was installed. I wish that when I format the SD, there are only FAT and FAT32 available for choosing. How to do that Is it possible to do that by adding something in driver By the way, my SD driver was written in SCSI miniport. Thank you anyone who can give me a help Tag: Virtual Device Driver Basics Tag: 45941
  - 15
    - conditional compilation hi i do have a scenario in which certain portions of the file are to be included for a driver and others for user mode programs. i want to carry on a conditional compilation. does windows 2003 ddk build generate some env variables or flags to say if its a driver thanks. Tag: Virtual Device Driver Basics Tag: 45939
  - 16
    - how to control the COM-port from driver hello i've opened COM-port with ZwCreateFile. now i in need to control the port. how it can be done thank you. Tag: Virtual Device Driver Basics Tag: 45932
  - 17
    - HID implementation on Windows XP/Longhorn We're putting together an ASIC that exposes HID as well as non-HID devices on the same chip, with one USB device port. That is, there's one device, several endpoints, several configurations. My question is.. Is it better to put these devices behind a hub, or to just expose the multiple endpoints without a hub? We're still in the hardware design phase, so we can go either way I had read somewhere that there are issues with using the stock Microsoft HID driver if there are other endpoints peered to it. Any and all comments are appreciated Thanks in advance! Tag: Virtual Device Driver Basics Tag: 45923
  - 18
    - USBCAMD2 Video Freeze issue. Hi all, I'm having a stange problem with a USBCAMD2 based driver for a custom USB camera we're working on. We have only 1 video stream whose format is RGB24. In ProcessRawVideoFrameEx(), if I do the following: frameBuffer = (BYTE*)FrameBuffer; frameBuffer[0] = frameBuffer[1] = frameBuffer[2] = 0; . . fill in the rest of the frame buffer with actual data . the video frame is not drawn. However, if frameBuffer[0], frameBuffer[1], or frameBuffer[2] is non-zero, the video frame is drawn (Note that only one needs to be non-zero, not all three). We noticed this because the video stream would "freeze" whenever the first pixel was completely black RGB(0,0,0). As soon as the pixel goes to anything but black, the video resumes. Has anyone else seen this? I find it quite bizarre & can't figure out why it's doing it. Thanks, Jerry Tag: Virtual Device Driver Basics Tag: 45920
  - 19
    - how to check a driver's version ? hi: I'm using Windows XP with VC 7.1. Is there a Win32 API to check a driver (*.sys) version? Thanks Polaris Tag: Virtual Device Driver Basics Tag: 45918
  - 20
    - memory mapped files I'm loading a large file into a section with ZwCreateSection. Then I'm going to map a view with ZwMapViewOfSection I only need a portion of this file to be visible in my View. But the portion starts say at offset X into the file. I only need to read Y bytes of the file from that point on. Are the SectionOffset and ViewSize arguments for ZwMapViewOfSection the right guys for this job If X is not an even multiple of the PAGE_SIZE, then where is the rounding down reflected so that I am aware of what the Base Address is actually pointing at. Is it pointing to the 0th byte of my view, i.e the Xth byte of my file or are other offsets involved Please fix this picture for me Virtual Memory p == page boundr ( ==start of my file after its mapped int ) == end of my fil X == start of where I'm intereste Y == length in bytes of what I'm intereseted i ] == end of where I'm intereste p-------....--------p--------...----------p-------------------p---------...-------p------- ... (------...-----------------X----...-Ybytes-.....-----]------...------ I don't want to end up wasting LOTS of space in the VM system and lots of time loading up the system with data I'm not interested in Thanks Tag: Virtual Device Driver Basics Tag: 45908
  - 21
    - User-mode midi-driver Hi everyone, I'm not sure if this is the right place to ask for, but I will just go ahead: I'm currently writing a virtual midi-driver which is implemented in a user-mode-driver mymidi.drv. I have taken the sample from the nt 4.0 ddk and adapted it to my needs. I got two problems: 1.) If I install on a system where no midi-driver has been installed previously, my driver will not show up in the audio & midi settings in the control-panel. I think that I need to install some MS component which will not exist until the first midi-driver is installed... Any hints, on what I need to include in my inf-file? 2.) If I get this thing installed right (on a system which already got a midi-port active), the driver is installed. Unfortunately there, the audio & midi settings control panel applet won't start any more. With OutputDebugString I found out, that my driver is loaded and the DriverProc is called with "DRV_LOAD" - but that's it... Does anyone have ideas why driver-loading seems to fail (even so bad that the control panel applets aborts)? Best regards, Tobias Tag: Virtual Device Driver Basics Tag: 45905
  - 22
    - printer properties Hi Does someone know if a printer driver has to have a custom property page or not? Is it possible to specify, that my printer driver has no property pages during DrvDevicePropertySheets ?? MR Tag: Virtual Device Driver Basics Tag: 45900
  - 23
    - Automatic testcap driver installation Hello, Any clues how to install wdm Testcap driver automatically? I've tried to run with "rundll32.exe setupapi,InstallHinfSection Testcap.Device 132 .\testcap.inf". The installation confirmation dialog (warning about the uncertified driver to be installed) appears ok and no errors is notified. But after the installation the wdm capture driver is still not installed. regards, -- Timo Tag: Virtual Device Driver Basics Tag: 45894
  - 24
    - Auto-Reconnecting USB-Stick after DEVCON DISABLE.. - How To ? Hi everyone, have to use a USB memory stick on a w2k workstation - without a mouse! --- 1st question: Is there a way to simulate the click on that tray icon? E.g. with a startmenu entry, accessible with some keystrokes? --- 2nd question: I fooled around with DEVCON and now I'm able to "disconnect" an "enable" the drive manually with two BAT files. But after that disabling, unplugging and replugging, the drive will not be enabled automatically as it does after removing it with a click on that tray icon. Instead, I have to enable it also maually... What is different between the tray icon and DEVCON? The documentation for both is too poor, imho. Best regards, Schrotti -- Using Opera's revolutionary e-mail client: http://www.opera.com/m2/ Tag: Virtual Device Driver Basics Tag: 45889
  - 25
    - USB printer status, PJLMON and UI application. Hi Friends, Recently I have been assaigned the task to write a program to check the status of a 3rd party USB printer before issuing a print job. The application should find all the statuses like printer ofline, out of paper, paper jam etc.,. The vendor is not installing Language Monitor dll during installation. When I did some research I found that we have to use PJL language and a Language monitor. I also found that the printer we are targeting supports PJL and Microsoft provides a sample PJLMON Language monitor in DDK. Following is the mechanism I want to use to achieve this goal: Modify the PJLMON sample and install on the machine by modifying the printer vendor supplied .INF file. In PJLMON sample add logic to notify a UI application about the status changes( really I don't know whether using Named pipes will work here, But I will try Named pipes.) The UI application will listen for the status changes and update UI accordingly. Is this logic going to work? Am I going in a right direction? someone please help me. Please direct me to some useful resources , books or samples. I appreciate you all for taking some time to read this message . Thanks, Jagadish. Tag: Virtual Device Driver Basics Tag: 45887

Good Day

I was wondering where to get information on Virtual devices on windows 2K/XP

I want to make a driver that detects if any of our products are connected (Serial/USB) and then acts as a generic PCSC driver to any of these devices. Our clients do not want to layer the driver atop the HID/Serial driver because they also want direct access to the hardware from user mode.. Can anybody help me with this

With Best Regards
StreaX

Re: Virtual Device Driver Basics by Doron

Doron
Tue Jun 01 09:16:35 CDT 2004

as an aside, direct access to hw in user mode means that your device
provides no security to the machine whatsoever. your hardware is now
suscetible to a broader range of attack.

d

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"StreaX" <anonymous@discussions.microsoft.com> wrote in message
news:4323B4A0-1091-44F3-89B7-F8DC2DDF2F32@microsoft.com...
> Good Day,
>
> I was wondering where to get information on Virtual devices on windows
2K/XP.
>
> I want to make a driver that detects if any of our products are connected
(Serial/USB) and then acts as a generic PCSC driver to any of these devices.
Our clients do not want to layer the driver atop the HID/Serial driver
because they also want direct access to the hardware from user mode.. Can
anybody help me with this?
>
> With Best Regards,
> StreaX

Re: Virtual Device Driver Basics by anonymous

anonymous
Wed Jun 02 00:21:03 CDT 2004

Actually this device is really intended to be used from USER mode. commands are sent through this device (Via serial or HID) and the hadrware sends back a response based on the command. but currently a customer requres us to make a PC/SC compatible driver for these devices. Actually all logic for handling Smart Cards are programmed in the Hardware device and all i need to do is make a dummy driver to convert PCSC commands to Our Commands. Another thing they want is the capability to turn OFF/On The PCSC Driver at will. Is this at all possible

I wish there is a way to make a PCSC driver in user mode....