Video Display Mirror Driver

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  - 1
    - Confused about Kernel Streaming / DShow clocks... Hi folks, Just a quick post to see if someone can clarify my understanding of kernel streaming clocks.- I think I've got the basics, but there are a few loose ends... I've got a multimedia card with separate audio and video capture drivers written under the stream class driver. At the moment, the captured audio & video has a habit of drifting out of sync, so I need to put clock support into the drivers. Additionally, the hardware has 27 MHz counter that can be queried to give me a very accurate clock source. As I currently understand it: a) I need to get both audio and video capture drivers to support being a master clock. b) I need to get the drivers to be able to timestamp samples based on the master clock for the graph (which might be themselves, or might be from somewhere else). Here's where I have a few questions... Q'n 1. It seems that there seem to be several ways of doing "a)" and "b)" - MSDN seems to indicate that I can do a) by including information in my HW_STREAM_OBJECT indicating that I can act as a master clock, by including appropriate clock support flags, and a callback routine (HW_CLOCK_OBJECT). - If I do that, then my clock support is going via the stream class driver. It then seems the the "similar" way of implementing b) is to use the "StreamClassQueryMasterClock" routine, using the clock handle passed to my driver via SRB_INDICATE_MASTER_CLOCK. Make sense so far? If so, then why is there also a whole load of KS Property stuff, which provide similar functionality? It seems that if I want to provide a master clock source via the KsProperty route,. then I'll have to implement KSPROPSETID_Clock, and also KS_PROPERTY_STREAM_MASTERCLOCK. Do I have to do both of these, or is it an either/or proposition, with the stream class driver doing some behind the scenes work for me in the first case? Qn 2: If I have the two filters running, and both can provide a master clock, then the audio capture driver will provide the master clock of the graph - so I need to get the other driver to timestamp samples based on the audio driver. StreamClassQueryMasterClock would seem to do the job if I want to use stream.sys, however, it's asynchronous, and it doesn't seem sensible to try and perform such a query every time a get a media sample. Any suggestions on strategies for getting the drivers to query the master clock at intervals and then interpolate? How is this normally done? Qn3: If I was to use the property set approach, instead of StreamClassQueryMasterClock, it seems that I need to get on driver to get hold of the direct call interface (KSPROPERTY_CLOCK_FUNCTIONTABLE) advertised by the other driver... how do I do that? thanks in advance, Martin Harvey. Tag: Video Display Mirror Driver Tag: 51904
  - 2
    - question about compatiblity Hi, I have a question about the compatibility for windows device driver. ScsiWritePortUlong, for example, it writes 4 bytes data into a scsi card's register. Will the Microsoft always define ULONG to 4 bytes even in the 64 bits or higher machine? Thanks Tag: Video Display Mirror Driver Tag: 51901
  - 3
    - Passing a struct address to a 16-bit driver dll I have started on an installable driver dll for a midi output device. I used MSVC 1.52c to build it. It works fine under Windows 3.11, but under Windows ME the address of the midiOutCapabilities struct seems to be wrong when modMessage receives the MODM_GETDEVCAPS message. I use a MIDIOUTCAPS __far * to adress the fields in the struct at the address passed via dwParam1. Is it because I compile it with MSVC 1.52c? I thought that should be ok since it produces 16 bit code. Any other ideas? -- The next step in human evolution must be built upon compassion, cooperation and a healthy competition. That is why we all help out here. Tag: Video Display Mirror Driver Tag: 51900
  - 4
    - how to enum the hardwares in win2000 ddk hey all , how to enum hardwares in win2000 ddk,get 'handle','hardwardId' of the listed hardwares. Any advice will be appreciated. Tag: Video Display Mirror Driver Tag: 51898
  - 5
    - In CE.net, how to support multiple display drivers? My run-time image includes two display .dll files and I use CreateDC to enable the second display driver. But only DispDrvrInitialize() is called. GPE *GetGPE() is not called.What should I do with it? Thanks a lot! Tag: Video Display Mirror Driver Tag: 51891
  - 6
    - UpdateDriverForPlugAndPlayDevices hangs with HWND Hoi. I am supplying some kind of application with my driver, which gives the user the possibility of adding or removing the driver dynamically. But since I got feedback of customers, the windows driver warning window sometimes appeares behind my application window, I am working on a patch (along with a few other bugfixes) right now. To solve the problem, I thought passing a HWND to the UpdateDriverForPlugAndPlayDevices function call should be the solution. But I cannot tell exactly, because every time I pass the window handle to the function, it stops responding. The window handle is a valid one from an mfc propertysheet of a different process. This propertysheet calls a method of an com interface of an local server com object (interactive user privilegs) which is loaded by an system service. The problem appears in the UpdateDriverForPlugAndPlayDevices as I found out with the debugger. The function hangs on forever, except for the case I kill the propertysheet's app. Doing so brings the UpdateDriverForPlugAndPlayDevices function back to life, reporting an error. Does anybody have an idea what causes the problem and how to solve it, or has anybody experienced similar situations with UpdateDriverForPlugAndPlayDevices? Thanks in advance, Laurents C. R. Meyer Tag: Video Display Mirror Driver Tag: 51889
  - 7
    - AVStream: failed to render video outpin of TV tuner filter. Dear All, I met a problem when I tried to render my video outpin of TV tuner filter and I listed two situation as following Case 1 : Only insert TV tuner filter by GraphEdit and render the video outpin of TV tuner filter. Result : Error code 0x80040111 (ClassFactory cannot supply requested class) Case 2 : Insert TV tuner and crossbar filters by GraphEdit and render the video outpin of TV tuner filter. Result : Success to render it. What's happened on Case 1? Did I miss some settings? Any comments are appreciated. Thanks, Edward Tag: Video Display Mirror Driver Tag: 51888
  - 8
    - IoWriteErrorLogEntry() Behaviour Dear all, When using IoWriteErrorLogEntry() to write my driver error messages i see an extra 28 bytes of data preceeding my actual data written. Is this the default behaviour, if so what is it & how to avoid? or am i messing up something. Also how to write type=information messages in the Event logger from driver. Thanks -Vijairaj Tag: Video Display Mirror Driver Tag: 51887
  - 9
    - AVStream: failed to connect TV tuner and TV audio decoder filters. Dear All, I implement a TV tuner, TV audio decoder and crossbar filters. I also implement PROPSETID_TUNER, PROPSETID_VIDCAP_CROSSBAR and PROPSETID_VIDCAP_TVAUDIO property set for them. My current status is that I could connect TV video pin of tuner filter to crossbar filter successfully. But I cannot connect TV audio outpin of tuner filter to TV audio inpin of TV audio filter. What value should I set to the TVAudioMedium fileld of KSPROPERTY_TUNER_CAPS_S structure if I want to connect TV audio outpin of tuner filter to TV audio filter (not crossbar filter)? PS : I have ever tried to set the GUID of TVAudioMedium to GUID_NULL and then my tuner audio outpin of tuner filter disappear. Any comments are welcome and very appreciated. Thanks, Edward Tag: Video Display Mirror Driver Tag: 51886
  - 10
    - enable/disable device I want hide the SCSI adapter device form device manager or have to prevent the user to enable/disable the device in device manager . thank y veeru Tag: Video Display Mirror Driver Tag: 51883
  - 11
    - CHAT: Windows Kernel Plug and Play and Power Management Ask The Experts: Windows Kernel Plug and Play and Power Management Join us for an online session that focuses on kernel-mode Plug and Play and power management concerns for driver developers, best practices for power management, and test processes and tools for testing Plug and Play and power management in drivers and hardware. October 20, 2004 10:00 - 11:00 A.M. Pacific time 1:00 - 2:00 P.M. Eastern time 17:00 - 18:00 GMT Chat time for cities world-wide: http://www.timeanddate.com/worldclock/fixedtime.html?day=20&month=10&year=2004&hour=10&min=0&sec=0&p1=234&sort=1 To add this chat to you calendar: http://msdn.microsoft.com/chats/outlook_reminders/04_ATEO_WIN_KERN_PnP_Oct20.ics For more info on MSDN chats, including other upcoming developer chats, chat archives, and other info see http://www.msdn.microsoft.com/chats Tag: Video Display Mirror Driver Tag: 51874
  - 12
    - Problems with PCI-X cards and PAE I have a Dell Power Edge 6650 with 8 GB of RAM (/PAE in my boot.ini). I have started adding cards to the PCI-X bus and am having a great deal of trouble running the apps for them unless I disable PAE. I get error messages from the applications like: "CDA_MemoryLock failed to lock DMA buffer into physical memory (returned 0xcd0e0000)" I have tried running both Windows XP Pro and Server 2003, Enterprise Ed. With the same result. With PAE I get the messages, without PAE, the apps seem to run. Unfortunately, I need the extra memory and we were planning on going from 8 GB to 32. Any thought on what is going on? Can I ask the OS to put the cards in a certain address range? Are the apps just not able to handle pointers to the memory beyond 4 G? I have the source for the apps, but I'd like to get a handle on what the problems might be before I spend a significant amount of time blindly poking around. Thanks in advance, Marc Reinig UCO/Lick Laboratory for Adaptive Optics Tag: Video Display Mirror Driver Tag: 51868
  - 13
    - Accessing a file on a volume by volume name In kernel mode, is there a way to access a file on a volume with a particular Volume ID string? In user mode, I can do it with CreateFile, but I haven't been able to get it to work with ZwOpenFile. Tag: Video Display Mirror Driver Tag: 51866
  - 14
    - Q:Printer driver, paper information from MS Word I have a monolithic printerdriver under XP, but I can NOT seem to figure out how to read paper information from MS Word. In DrvDocumentPropertySheets, where I would expect to get the information, the DEVMODE from Word just returns my internal paper settings that I provided on first call, and I can NOT seem to force it to do otherwise. Any help ? Tag: Video Display Mirror Driver Tag: 51864
  - 15
    - Accessing the SMBus through a Via 82C686 I am trying to talk to a device in an embedded PC that is on the SMBus. The SMBus controller is a VT82C686. I have never done driver development in Windows before so I'm a bit unsure of how to proceed. I've read the relevant sections in the Windows DDK and the questions and answers on usenet. The DDK example appears to be for writing a driver for a SMBus controller, rather than talking to an existing third-party driver. As the Microsoft-written drivers won't work with the Via chipset, I'm assuming the information I need will be from Via rather than MS. The DDK confused me. Can I just write a user-space application to talk to the SMBus controller, and have that pass on information? Does anybody know where information on using the Via driver is? Many thanks for any help. Stephen. Tag: Video Display Mirror Driver Tag: 51859
  - 16
    - Read a file currently beeing used by a driver Hi In my driver, I do log some data in af file on the harddrive. It would be nice to read the file with notepad, will the driver still is running and using the file. I do have some problems doing this. This is what I would like to do: Read the file in eg. Notepad, while the driver stilling using the file If the file allready exits, the driver opens the file, and append anything new to it. This is how I open the file in the driver // Create the file status = ZwCreateFile( &hLogFile, SYNCHRONIZE, &objectAttributes, &IoStatus, 0, FILE_ATTRIBUTE_NORMAL, FILE_SHARE_WRITE | FILE_SHARE_WRITE, FILE_OPEN_IF, FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0 ); I guess the problem is in the way I create the file, but what ? Thomas Tag: Video Display Mirror Driver Tag: 51856
  - 17
    - USB Video Class, How to Make firmware I am developping USB Video Class compilant device. I am trying to make USB Video Class Descriptors as USB Device Firmware such as Device Descriptor or vc interface descriptor. My device do not works at all. I writed USB Video Class Descriptors by reference to [ USB Device Class Definition for Video Devices Video Device Examples ] . please tel me Descriptors examples. Tag: Video Display Mirror Driver Tag: 51853
  - 18
    - usbhub.sys lower filter driver I have a usbhub.sys lower filter driver where I would like to filter URBs and make changes to them.when I recieve a URB,I want to send my own request down and on it's return change the URB and send it back.any hints on how I go about doing this would be welcome Tag: Video Display Mirror Driver Tag: 51851
  - 19
    - Build Environment hello, anybody who knows where to find about the buidling environment for creating printer drivers for : 1. Windows 9x/Me 2. Windows NT4 3. Windows 2000/XP thanks in advance. Tag: Video Display Mirror Driver Tag: 51848
  - 20
    - /NOLOWMEM does not work I want to test handling of physical addresses above 4 GB in my kernel driver. The test system: 8 GB RAM Windows 2000 Advanced Server with all patches installed. The boot.ini entry: /PAE /3GB /NOLOWMEM /NUMCPUS=1 It seems that /NOLOWMEM flag doesn't work -- Task Manager and WinDbg !vm command still show about 8000 MB of RAM. /NOLOWMEM should be compatible with /3GB according to http://www.microsoft.com/whdc/system/platform/server/PAE/PAEdrv.mspx "The /PAE, /NOLOWMEM and /3GB switches, and the registry change, can be used at once. Note that /3GB will prevent access to physical memory beyond 16 GB because the kernel memory space is reduced with the /3GB switch, and thus does not have enough room for the additional Page Table Entries required when memory is larger than 16 GB." What can be wrong with my setup? Dmitriy Budko, VMware Tag: Video Display Mirror Driver Tag: 51846
  - 21
    - Windows XP SP2 Printer Driver problem... A printer driver that was written and compiled using NTDDK was working fine for Windows 2000/XP. After installing XP SP2 the printer driver now causes a memory access violation in explorer.exe when selecting 'Printer Preferences' from the printer driver's property page about 4 out of 5 times. After re-compiling the driver with the current SDK (WINDDK\3790) it still has the same problem but only 1 in about 10 times does the access violation occur. Any help is appreciated. Thanks. Tag: Video Display Mirror Driver Tag: 51843
  - 22
    - Missing packet over HID USB stack Hi, I have a custom kernel mode function driver for a HID USB device. In Win2000 (SP4) I see a strange problem: after first time installation, the driver fails to read the first report (of 63 bytes data + 1 byte report id). I use a separate thread in which IRP_MJ_READ requests are issued to the HIDClass driver. It is seen that the requests block until some data is obtained, which is quite fine. But it fails to return the very first packet. All remaining packets are retrived properly. I am sure that the first packet is properly transmitted across the bus from data from USB tracer log. Notably, this behavior happens only during the first use of the device after fresh installation of the driver. Issue does not happen if the device is re-plugged and used again. Also this issue is not seen on the same driver when used in XP. Does anyone have clue what is going wrong in my Win2000 environment? Thanks in advance. Najas Tag: Video Display Mirror Driver Tag: 51838
  - 23
    - NO_MORE_IRP_STACK_LOCATIONS When Calling IoCallDriver(). Hi, I am writing a dynamically loaded upper filter driver for a serial port. My driver loads succesfully and I then send it a special "start" IOCTL containing the name of the serial port device it is to open (i.e. "\??\COM4"). This is the code for my IOCTL (with error checking removed for clarity). This has been cribbed from a variety of sources including Walt Oney's book. ---------- NTSTATUS DispatchControl(PDEVICE_OBJECT fdo, PIRP Irp) { PAGED_CODE(); PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension; NTSTATUS status = STATUS_SUCCESS; ULONG info = 0; PIO_STACK_LOCATION stack = IoGetCurrentIrpStackLocation(Irp); ULONG cbin = stack->Parameters.DeviceIoControl.InputBufferLength; ULONG cbout = stack->Parameters.DeviceIoControl.OutputBufferLength; ULONG code = stack->Parameters.DeviceIoControl.IoControlCode; switch(code) { case MY_IOCTL: // Copy passed-in data to a unicode string. // (This will be something like "\??\COM4"). UNICODE_STRING PortName; WCHAR wPortName[32]; swprintf(wPortName,(WCHAR*)Irp->AssociatedIrp.SystemBuffer,cbin); RtlInitUnicodeString(&PortName,wPortName); // Use the Unicode string to get a pointer to the current device for (ie) COM4. PFILE_OBJECT FileObject = NULL; PDEVICE_OBJECT DeviceObject = NULL; status=IoGetDeviceObjectPointer(&PortName, FILE_READ_DATA, &FileObject, &DeviceObject); pdx->Pdo = DeviceObject; pdx->LowerDeviceObject = IoAttachDeviceToDeviceStack(fdo,DeviceObject); PIO_STACK_LOCATION pIrpStack = IoGetNextIrpStackLocation(Irp); ObDereferenceObject(FileObject); pIrpStack->MajorFunction = IRP_MJ_CREATE; /////// Bug Check when next line executed. status = IoCallDriver(pdx->LowerDeviceObject,Irp); Any help would be greatly appreciated. Thanks O.C. Tag: Video Display Mirror Driver Tag: 51822
  - 24
    - Printer Driver upgrade Hi, When we upgrade a Microsoft Unidriver based Printer driver with the render and/or UI Plug-in dlls currently loaded by Explorer, the spooler uses the some algorithm wherein it replaces the files in the 3 directory(C:\WINNT\system32\spool\drivers\w32x86\3) with the new version and then copies the current version(currently loaded by exlporer) into the 'C:\WINNT\system32\spool\drivers\w32x86\3\Old' directory. I have observed the same behavior with Monolithic printer drivers too wherein the render and/or UI dlls even if currently loaded by Explorer or any other App(Print dialog -> Properties) are replaced/upgraded in the 3 directory and the current version is copied into the 3\old directory. Now this is something that doesn't happen for other driver dependent files in the 3 directory. One thing that really puzzles me is the fact that the Process Explorer tool shows the UI/Render dlls loaded from 3 directory after upgrade but Iam unable to delete the dlls in the 3\old directory as well, which says 'access denied'. Iam not sure who's keeping the files loaded from 3\old directory? Any clue as to whats happening here would be of great help to me. Is this something being done by spooler, as a special case processing? Thanks & Regards, Harsha. Tag: Video Display Mirror Driver Tag: 51821
  - 25
    - Software only driver I am old in C/C++ programming but VERY new in drivers programming. I will need a bit of guidance, as my only book on the subject WDM - Walter Oney I've read did not helped. I want to build a "software only" driver that simulates an hard disk drive (virtual disk) that will keep in a file all its data. I want this to work on 98, 2000, XP and 2003. For the moment the target is only XP. 1. Do I need WDM or not? What are the sides to these two choices? 2. Do I need PnP and/or Power Management? What if I do not implement these for a "software only driver". 3. What is a legacy driver of type: "Kernel Mode Service"? Should I use this? Thanks and I will highly appreciate any answer or piece of information I can get from you. TIA Tag: Video Display Mirror Driver Tag: 51820
- Next
  - 1
    - Multiple instances Hi all, i developed a serial virtual port wdm driver. Now i'd like to have more than one instance of that port but when i install the second instance i have a generic error (it is not possible to load the driver). If i open my custom properties sheet for the second instance, i have the parameter coming from the first instance .... but i think this is a consequence of the starting error. How about the DLL and sys files ? They should be common for every instance ... is there a reference counter? If i update the driver, then it will be update for every instance of the port ? thanks a lot -- Stefano M Tag: Video Display Mirror Driver Tag: 51819
  - 2
    - PNP_LOCATION_INTERFACE? I'm writing a bus driver that reports a virtual NIC. I recently made changes to my NDIS miniport driver to enable DMA (call to NdisMInitializeScatterGatherDma). When I launch the HCT (11.2), this results in a bus interface query to the bus driver for a PNP_LOCATION_INTERFACE. I have implemented what I think the interface is supposed to do, but have failed to find any documentation. Without this interface implemented, returning STATUS_NOT_SUPPORTED would result in the non-existant returned interface to be invoked, resulting in a BSOD with the following stack trace: STACK_TEXT: WARNING: Frame IP not in any known module. Following frames may be wrong. f3aa5c88 80649102 00000001 f3aa5ce8 e1b841a0 0xe103b80e f3aa5cf0 8064bcec 00000000 f3aa5d1c 00000014 nt!PpCriticalGetDeviceLocationStrings+0x112 f3aa5d28 805c9284 0000000a e1b841a0 00000014 nt!PiControlGetPropertyData+0x1fc f3aa5d50 804dfd24 e1b841a0 0070f8e8 00000014 nt!NtPlugPlayControl+0xa8 f3aa5d50 7ffe0304 e1b841a0 0070f8e8 00000014 nt!KiSystemService+0xd0 0070f8c4 77f42c2b 75773475 0000000a 0070f8e8 SharedUserData!SystemCallStub+0x4 0070f8c8 75773475 0000000a 0070f8e8 00000014 ntdll!NtPlugPlayControl+0xc 0070f938 77c57920 000cc920 000bf9a4 00000024 umpnpmgr!PNP_GetDeviceRegProp+0x22a 0070f96c 77ce61d0 757718e7 0070fb2c 00000008 RPCRT4!Invoke+0x30 0070fd48 77ce63a7 00000000 00000000 000cc994 RPCRT4!NdrStubCall2+0x229 0070fd64 77c57337 000cc994 000b8cf0 000cc994 RPCRT4!NdrServerCall2+0x17 0070fd98 77c571f9 7577130e 000cc994 0070fe38 RPCRT4!DispatchToStubInCNoAvrf+0x38 0070fdec 77c572b9 0000000d 00000000 7578c018 RPCRT4!RPC_INTERFACE::DispatchToStubWorker+0x112 0070fe10 77c88646 000cc994 00000000 7578c018 RPCRT4!RPC_INTERFACE::DispatchToStub+0xa1 0070fe44 77c8874e 000cc958 000bf998 000cc920 RPCRT4!OSF_SCALL::DispatchHelper+0x144 0070fe58 77c884f1 00000000 000c000d 00000001 RPCRT4!OSF_SCALL::DispatchRPCCall+0xfc 0070fe90 77c884dd 000bf980 03000070 00000000 RPCRT4!OSF_SCALL::ProcessReceivedPDU+0x5df 0070feb0 77c884c7 000bf980 00000070 77e419a7 RPCRT4!OSF_SCALL::BeginRpcCall+0x21e 0070ff10 77c81050 00000000 000bf980 00000070 RPCRT4!OSF_SCONNECTION::ProcessReceiveComplete+0x473 0070ff20 77c80b0e 0009a220 0000000c 00000000 RPCRT4!ProcessConnectionServerReceivedEvent+0x20 0070ff8c 77c58159 77c60771 0009a220 00000000 RPCRT4!LOADABLE_TRANSPORT::ProcessIOEvents+0x1b6 0070ff90 77c60771 0009a220 00000000 00000000 RPCRT4!ProcessIOEventsWrapper+0x9 0070ffb0 77c60857 00099af0 77e4a990 0009fc68 RPCRT4!BaseCachedThreadRoutine+0x9c 0070ffb8 77e4a990 0009fc68 00000000 00000000 RPCRT4!ThreadStartRoutine+0x17 0070ffec 00000000 77c60840 0009fc68 00000000 kernel32!BaseThreadStart+0x34 With this interface implemented, the HCT can now launch. I would like to make sure that the my implementation for the interface is doing the right thing. Can anyone point me to documentation for what this interface is supposed to do, and how it is supposed to behave? Thanks Tag: Video Display Mirror Driver Tag: 51801
  - 3
    - USB 2.0 on Win9x/ME/NT Hello, I have made a bulkOUT interrupt IN usb driver based on bulkusb.sys code in Win XPDDK and some help here and there from Walter Oney's book. My device is a High Speed USB 2.0 device working only on high speed. Now i want to make this driver work on Win 95/98/ME/NT . The problem is that there is no support for USB 2.0 in the Microsoft provided USB stack on these OSes. What is the best recommended way to develop a client driver for these OS as well , ideally to utilise the driver already built that works fine for 2k/XP. Are there any 3rd party USB stacks available that can be used in development and provide a similar API interface provided by Microsoft USB stack on 2k/XP. specifically i just build URBs and pass them over to usbd.sys which talks to usbhub.sys and usbehci.sys by itself . With minimum possible extra development time , and utilising the maximum part of existing driver code we already have , what is the best practise here? regards Taha Tag: Video Display Mirror Driver Tag: 51794
  - 4
    - Hibernation fails if the scsiminiport DeviceExtensionSize > 32k Hi, I'm writing scsiminiport driver, when installing Windows XP SP1 over my device, hibernation fails. In the DDK it is written that a device driver must allocate less than 32k of uncached memory in order to participate in hibernation, my driver allocates 12k of uncached memory (using ScsiPortGetUncachedExtension() ). when I followed (assembly code) of windows I found that it fails to hibernate when comparing the deviceExtensionSize(43k in my case) against 32k. The DDK doesn't mention any restrections regarding deviceExtentionSize. I didn't find Knowledge Base article regarding this issue. The work around I'm thinking of is to allocate memory "externally" using ExAllocatePoolWithTag in the FindAdapter function and to free it when stopping the device in AdapterControl function. Is there any body faced this issue? Is there any harm in the work around? thanks saeed Tag: Video Display Mirror Driver Tag: 51779
  - 5
    - Example for RegisterDeviceNotification in .Net ? Hello, Has someone an example how to use "RegisterDeviceNotification(hRecipient,NotificationFilter,Flags);" I wanted to register a Function which is called on a DBT_DEVICEREMOVECOMPLETE of a USB device. Maybe someone has written this part before ? Thanks, Wolfgang Tag: Video Display Mirror Driver Tag: 51775
  - 6
    - The simplest way replace KS minidriver ? This is a multi-part message in MIME format. ------=_NextPart_000_0023_01C49A75.57101760 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Several days I am trying to learn how to uninstall "avshws" sample = driver, see news:%23j88RejlEHA.2764@TK2MSFTNGP11.phx.gbl I try to implement Max's recommendation concerning unregistration from = SWENUM, but it is still NOT OK. To continue my development, I tried to "workaround" this problem and = replace the existing driver in the simplest way: 1. Disable it using Device Manager 2. Replace the file avshws.sys in "system32/drivers" with new one 3. Enable it using Device Manager But - in most cases - GraphEdit application continued running OLD driver = version ! I have DELETED avshws.sys from "system32/drivers", and checked that = there is no any copy of it in my computer - and GraphEdit application = continued running the graph with old avshws.sys, that is PHYSICALLY = DELETED ! The only non-mistics explanation is, that GraphEdit uses some cash and = doesn't clean it. And this is NOT the cash that can be seen using = "Graph\Enum Cashed Filters" menu items - it is empty ! My questions are: 1. How GraphEdit "secret cash" can be cleaned ? 2. What is the "legal" simplest way to replace KS minidriver to its new = version ? Thanks,=20 Zvi ------=_NextPart_000_0023_01C49A75.57101760 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2900.2180" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>Several days I am trying to learn how=20 to uninstall "avshws" sample driver, see</FONT></DIV> <DIV><A=20 href=3D"news:%23j88RejlEHA.2764@TK2MSFTNGP11.phx.gbl">news:%23j88RejlEHA.= 2764@TK2MSFTNGP11.phx.gbl</A></DIV> <DIV><FONT face=3DArial size=3D2>I try to implement Max's recommendation = concerning=20 unregistration from SWENUM, but it is still NOT OK.</FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>To continue my development, I tried = to "workaround"=20 this problem and replace the existing driver in the simplest = way:</FONT></DIV> <DIV><FONT face=3DArial>1. Disable it using Device Manager</FONT></DIV> <DIV><FONT face=3DArial>2. Replace the file avshws.sys in = "system32/drivers" with=20 new one</FONT></DIV> <DIV><FONT face=3DArial>3. Enable  it using Device = Manager</FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>But - in most cases - GraphEdit application = continued=20 running OLD driver version !</FONT></DIV> <DIV><FONT face=3DArial>I have DELETED avshws.sys from = "system32/drivers", and=20 checked that there is no any copy of it in my computer - and GraphEdit=20 application continued running the graph with old avshws.sys, that is = PHYSICALLY=20 DELETED !</FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>The only non-mistics explanation is, that = GraphEdit uses=20 some cash and doesn't clean it. And this is NOT the cash that can be = seen using=20 "Graph\Enum Cashed Filters" menu items - it is empty !</FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>My questions are:</FONT></DIV> <DIV><FONT face=3DArial>1. How GraphEdit "secret cash" can be cleaned=20 ?</FONT></DIV> <DIV><FONT face=3DArial>2. What is the "legal" simplest way to replace = <FONT=20 size=3D1>KS minidriver to its new version ?</FONT></FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial>Thanks, </FONT></DIV> <DIV><FONT face=3DArial></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>    = Zvi</FONT></DIV></BODY></HTML> ------=_NextPart_000_0023_01C49A75.57101760-- Tag: Video Display Mirror Driver Tag: 51769
  - 7
    - Filter Driver: Disk Enumeration I'm trying to write a disk filter driver, but unfortunately I'm not very familiar with the kernel yet. I've got a skeleton driver that lets my application control it via a special control device and DeviceIoControl. Now what I want to do is enumerate all devices of type FILE_DEVICE_DISK (specifically IDE/SCSI hard disks or RAID controllers) in the system and attach filter devices to them. Every driver I have looked at is a complete mystery: DriverEntry does absolutely nothing besides set up all the various callbacks. Somehow the kernel decides to call AddDevice for those drivers, but not in mine. I'm assuming there's some sort of registry key that I lack, but I'm truly at a loss here. What do I need to do to enumerate all the disk devices in my system? TIA, -Matt Tag: Video Display Mirror Driver Tag: 51765
  - 8
    - SetupCopyOEMInf and ERROR_NO_CATALOG_FOR_OEM_INF Hi, I had written a device installation program, when i call SetupCopyOEMInf(...) i got a ERROR_NO_CATALOG_FOR_OEM_INF (0xE000022F). How to fix it ? Thanks. Riga. Tag: Video Display Mirror Driver Tag: 51762
  - 9
    - howto ask for password at boot time Hi, can a boot driver ask for a password at boot time ? For instance when its DriverEntry or AddDevice Functions are called. I know that there is a software that has its own MBR bootloader to ask for a password. But i don´t want such solutions for many reasons. Is there a way i can get keystrokes from inside a boot driver ? Tag: Video Display Mirror Driver Tag: 51761
  - 10
    - serial filter I have a legacy win32 program which uses the serial comm port (serial.sys). I am neither able to touch the legacy program nor do I want to touch the serial driver. Is there still an option left to intercept the serial communication for implementing a filter? (The filter shall allow me to filter out, inject, or change bytes.) At which level? API, WDM, ... ? -- Frank Tag: Video Display Mirror Driver Tag: 51759
  - 11
    - RtlZeroMemory Hi Just a quick one I use RtlZeroMemory to zero out a structure. This structure containes another structure. So does that second structure get zero'ed out to ? Thomas Tag: Video Display Mirror Driver Tag: 51754
  - 12
    - Get current CPU, # of CPUs Is there a way for a driver to get the maximum number of CPUs so that it can allocate one structure per CPU? I know about KeQueryActiveProcessors, but "active" makes me uneasy. It's not ever possible to hot-plug CPUs, is it? And, is there a way to get an unambiguous identifier of the current CPU you're running on? Obviously, this would only make sense if it were just a hint or if it could be queried at DISPATCH_LEVEL or above, since otherwise the result could become wrong before you had a chance to see it. What I'd like to do is allocate some per-cpu junk to be maniuplated at DISPATCH_LEVEL and DIRQL and then be able to grab the appropriate one as necessary in a lock-free manner from ISRs and DPCs and such. I've heard people talking about this sort of thing as though it were a wise design technique, but I can't figure out how to do it! Thanks a lot. --Micah Brodsky Tag: Video Display Mirror Driver Tag: 51750
  - 13
    - modem driver How to get modem driver source code for study? Tag: Video Display Mirror Driver Tag: 51749
  - 14
    - CHAT: Windows Printer Driver Development Ask The Experts: Windows Printer Driver Development Join the Microsoft Windows Printing team to discuss Windows 2000, Windows XP and Windows Server 2003 print driver development. Developers will be on hand to answer questions around rendering, communication, and driver architecture September 21, 2004 10:00 - 11:00 A.M. Pacific time 1:00 - 2:00 P.M. Eastern time 17:00 - 18:00 GMT Chat time for cities world-wide: http://www.timeanddate.com/worldclock/fixedtime.html?day=21&month=9&year=2004&hour=10&min=0&sec=0&p1=234&sort=1 To add this chat to you calendar: http://msdn.microsoft.com/chats/outlook_reminders/Win_PrDrDEV_Sept21_04.ics For more info on MSDN chats, including other upcoming developer chats, chat archives, and other info see http://www.msdn.microsoft.com/chats Tag: Video Display Mirror Driver Tag: 51747
  - 15
    - CHAT: Driver Hangs: Detection and Prevention Ask the Experts Online: Driver Hangs: Detection and Prevention What are the driver-related causes of application and system "hangs?" What can you do to prevent them? Join us to discuss Longhorn I/O completion and cancellation requirements for drivers. Learn about new kernel support for I/O cancellation. We will discuss how to implement driver code that complies with I/O completion/cancellation and how you can verify compliance. September 15, 2004 10:00 - 11:00 A.M. Pacific time 1:00 - 2:00 P.M. Eastern time 17:00 - 18:00 GMT Chat time for cities world-wide: http://www.timeanddate.com/worldclock/fixedtime.html?day=15&month=9&year=2004&hour=10&min=0&sec=0&p1=234 To add this chat to you calendar: http://msdn.microsoft.com/chats/outlook_reminders/ATEO_DandD_Sept15.ics For more info on MSDN chats, including other upcoming developer chats, chat archives, and other info see http://www.msdn.microsoft.com/chats Tag: Video Display Mirror Driver Tag: 51746
  - 16
    - Question on Knowledge Base Article ID 263993 Why is the page for this link was removed? This is about the Environments to Build Drivers. I want to know the procedure in setting up the building environment. This is the link where the Build Environment KB Articles reside. http://www.microsoft.com/whdc/driver/kernel/KB-drv.mspx#toc3 Thanks. Tag: Video Display Mirror Driver Tag: 51744
  - 17
    - Microsoft USB Video Class, does it support OUT endpoint(s) Hallo there! I am developing USB Video Class compilant device. I have problem, implementing Video OUT stream. Video IN stream works fine. Is the current version of usbvideo.sys supporting OUT streams? (uncompressed) Graph Edit does not like to connect anything to my input pin :( format negotiation does not start, it looks like error is in the descriptors or ms. implementation. Tag: Video Display Mirror Driver Tag: 51736
  - 18
    - traceview I'm a MSDN universal subscriber. Where can I get hold of TraceView 2.0? Thanks Tag: Video Display Mirror Driver Tag: 51729
  - 19
    - Cancel print job not effective with Word under Win ME Hi, I am facing a problem with cancelling a print job from printer queue. I use Windows ME and Word XP application. When I give a document to print and then cancel the job from print queue, the print job does not cancel. Could anyone tell me what exactly is the problem. The job cancels from MS Powerpoint, MS Excel, MS Paint, also MS IE. I tried couple of things later on with MS word case. I changed the spool settings to RAW and also I tried direct printing (disable spooling). In both these cases, the cancelling happens (not immediately though). I am working writing windows driver. I would appreciate if anyone could get me a definitive steps taking place once user cancels a print job from print queue. Thanks! Madhu. Tag: Video Display Mirror Driver Tag: 51726
  - 20
    - Strange ISA's interrupt behavior on some computers I have wrote a driver for a non-PnP ISA board. I think it's not a WDM-driver because the board is not PnP and it starts not as usual WDM-drivers: it starts by DLL used by user-level programmer. DLL opens handle to ServiceManager, installs the driver and starts them. The device object is created in DriverEntry function. In one of IOCTL handlers the driver connects to interrupt: first is called HalGetInterruptVector, then IoConnectInterrupt and then it clears the interrupt for this ISA-board (the board is configured for interrupt using jumpers, no other board in computer uses this irq). Interrupt handler clears interrupt, shedules a DPC and returns true. On two of four computers it works fine. But on other two computers this does not work: interrupt handler is not called. The interrupt is level sensitive and should be triggered periodically using external signal. But I see, that interrupt handler is called only if I clear interrupt in some other IOCTL handler. And it's called only once. Àlthough is should be called periodically because interrupt is cleared in interrupt handler the same way as in specific IOCTL. Two computers that work fine are little older than two others: about Celeron (Pentium II) vs. Pentium 4 (865G chipset). What I am doing wrong? May be I'm doing stupidity? But I do not know another way to write a driver for non PnP-board for Windows 2000. Please make hints about right way for writing driver for a legacy ISA board. Tag: Video Display Mirror Driver Tag: 51711
  - 21
    - compiler I am beginer. I'd like to write simple USB driver. I have DDK, but I don't have the good compiler (of course I have one, but very old). What compliers you have used for this reason. Any suggestion will be appreciate. regards Dariusz Sobczuk Tag: Video Display Mirror Driver Tag: 51706
  - 22
    - TDI filter unload I have heard that TDI filter driver cannot be unloaded. Is it true ? If yes, why ? ...Mani Tag: Video Display Mirror Driver Tag: 51700
  - 23
    - NetBIOS Routing Hi All, I just need to track about the Winodws file sharing and do some specific manipulation on that. For that I need to capture all the NetBIOS packet going. I wrote a virtual NIC adapter driver.So now how I can route all these NetBIOS request to my Virtual adapter. In simple words, I need to capature all the netBIOS packet in my virtual adapter before forwarding it to the real network card. How to do this. Regards Suja. Tag: Video Display Mirror Driver Tag: 51697
  - 24
    - Writing driver to simulate keypresses Hello, I need to be able to simulate keypresses on the driver level so that DirectInput applications will receive the input too. If any of you knows an existing product that does this I would like to know. Since I didn't find anything that does this I am planning to write a driver myself and I need basic guidance. Here are the questions: 1 Should I go for a filter (kbfilter) or a whole new device (vhidmini)? 2 If I go for a filter. Will it be able to "sit" on PS/2 and USB keyboards? 3 Where should I put my driver? Should it be upper, lower? Do I put it between the i8042ptr and the keyboard class driver or somewhere else? 4 I need to send messages from the user mode to the driver to tell it what keys to simulate. I read an article that in certain cases I can't use DeviceIoControl. Is that true? Will I have to create a separate device to funcion as an interface? What is WMI? Can I use WMI to communicate with the driver? Thanks a lot, Arik. Tag: Video Display Mirror Driver Tag: 51693
  - 25
    - sometimes ,kernel return overrun erro,sb can tell me the true? my device is adapt bulk transfer mode. endpoint's maxpacket is 64B,OS is winxp,using winxp DDK(diver is bulkusb,the exact example of Winxp DDK ).I try to transfer 16MB data from PC to my device.sometimes there come out a overrun error,and the same time the pipe stopped! who can tell me what reason caused this? thanks Tag: Video Display Mirror Driver Tag: 51692

hi all

i am intersted in a Video Display Mirror Driver.
is there anyone here who has developed such a beast?
is anyone interested?

please contact me for more information.

assaf
assafwo@hotmail.com

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Re: Video Display Mirror Driver by Neptune

Neptune
Sat Sep 18 04:20:13 CDT 2004

"assaf" <assafwo@hotmail.com> wrote in message
news:OccMxRMnEHA.556@tk2msftngp13.phx.gbl...
> hi all
>
> i am intersted in a Video Display Mirror Driver.
> is there anyone here who has developed such a beast?
> is anyone interested?
>
> please contact me for more information.
>
>
> assaf
> assafwo@hotmail.com
>
>

That's us, we've done it for AOL, currently we're too busy to get into
another project like this. You can visit our website:

http://drivermaker.home.comcast.net/programming/index.htm

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