We would like to support grayscale 8bit image in video capture device like UsbIntel. We can support UYVY format image. I changed KSDATARANGE.SubFormat into MEDIASUBTYPE_RGB8...

Hi, My device driver strives to be secure and prevent the user from causing any damage to the operating system through its commands. Most of my IRP_MJ_DEVICE_CONTROLs and IRP_MJ_READ/IRP_MJ_WRITEs...

Is it possible to detect the presence of a USB memory stick through software? I have a problem with my PCs detecting memory sticks on boot up. Some of the sticks work fine and some of them arent...

Ok, we got a bad INF file from a contractor and it's causing Windows 2000 to try and load the "bad" driver when the device (a USB device) is connected. Attempts to fix the registry by deleting the...

If I use 1 byte pointer to allocate more than 1 byte space, could it have problem when free the space ? I mean, does system know how many bytes should be free ? For...

After years of procrastination I finally upgraded my development environment and test lab to support 64bit builds and test systems. That's the good news. The bad news is that the 3790 ddk x64...

Hi, We written a win2k plug n play driver for pcmcia 16 bit PC card.From my application I want to open a handle for our device. In my Application I used SetupDi* functions to get the Device name....

Any WIN32 API or driver interface allows to create a new drive letter based on a selected folder ? Thanks -Gary

Hi, Introduction ******************* I have created a FSFD and a function driver that communicate with each-other, the function driver receive requests from user-mode application and on some...

Hi, i am writing a languagemonitor. And i want to send and receive specific commands and data from printer wich is connected via serial comport. But i can only receive data if the printer prints a...

Hello: Are WRITE_REGISTER_UCHAR and WRITE_PORT_UCHAR identical ? If no when each of the should be used ? I need to write to 0x278( known as data register of LPT1 ) and wondering which is the...

Hi, In the DDK help file, it advises to use IRP_MJ_READ to continuously obtain input reports. I am using Firefly to send the MJ_Read Irp and expecting to get a STATUS_PENDING in return. While I...

You don't specify what type of endpoint or speed you are using. If it is bulk, then the only valid packet sizes are 8, 16, 32, 64 or 512, so a 1 or 2 byte transfer would be invalid. Also, if you...

Hi all Are there anyone who know how to get the bios version of graphic adapters? Thank you. Regards, Eva

Hi All ! Probably i am bringing forth a known but undocumented issue. "NdisSend works great on ethernet, but packets just loop back when trying to write to a WAN (modem) card. This is because Only...

We have a legacy driver for NT to communicate with a piece of custom hardware. This hardware doesn't seem to fall into any of Microsoft's existing classes (at least I don't think so, but you've...

Hello, Where would I find some sample PC Card Client Code for Window CE 4.2 and Windows Mobile 5? Mark

Do I am reading correctly? The IFSKIT is now included with the WDK? It is already included in the beta version available in the subscribers download area?

Hello, We are writing a DLL which is to be loaded by a main application (3'rd Party, for which we do not have the source code) . That main application retrieves a handle to a Camera device driver...

Ok, this is a weird one... I have a custom driver for a USB interface on a device. If I only have one of my devices attached, the driver works wonderfully... but (you knew there was a "but",...