Description:
Microsoft developers newsgroup.
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Unable to get DxgkDdiRecommendFunctionalVidP n call in windows 7
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I am trying to add an initial vidpn topology by implementing the DxgkDdiRecommendFunctionalVidP n call in the WDDM miniport driver. But starting from windows 7 i am unable to get the DxgkDdiRecommendFunctionalVidP n function call from dxgkrnl.After searching through the MSDN documentation i found out that the function... more »
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ACPI driver - doubt
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Hi I want to change the CPU speed ( increase/decrease CPU performance ) based on CPU loading using ACPI driver. I got one sample driver (wmiacpi) from wdk. But i can't understand, how can i control the cpu speed using this driver? Note: newbie to ACPI concept. Thanks in Advance. -- John.
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Unidrv-based bitmap driver sample in windows DDK can not work
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To learn how to program a virtual printer driver, I compile a sample (Unidrv-based bitmap driver) in windows DDK. The compilation is according to guidance from DDK user guide and everything is OK. However, after I add the compiled Unidrv-based bitmap driver to system and try to print a test page,... more »
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API OpenProcess Blocking
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Hello Remember that I post the question on API writefile in blocking the framework to map a logical drive in an image file management through a process in user-mode by an intermediate of my driver. The writefile is not blocking any more when I'm overlapped. But I use the API OpenProcess to get process name from a processID... more »
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Re-partitioning (or re-sizing) Compact Flash
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I'm looking for info on how to write some code that will allow a user to re-partition or at least resize the partition of their Compact Flash cards. I'm not sure this is the best newsgroup for this question so if this is not the place, can someone direct me to a better newsgroup? I'm hoping to write my code in C#, but from what I have found so far, it... more »
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QueryPerformanceCounter() kernel mode equivalent
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Is there a QueryPerformanceCounter() equivalent function that copies the CPU's free running 64-bit counter to a memory location? Have used it in DLLs for years, but not certain if this function is okay in the kernel. Searched the online references for an hour now... thanks in advance. JB
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Creating Driver Package
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Hi All, I have been using the Jan Axelon WINUSB c# sample from his website([link]) using this , the driver shall be install if it connected. How to create the driver package for this. Regards, Jayakumar Natarajan
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32 byte CDB
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Hi All, I want send Passthrough commands which are 32 byte like Read-32 (SCSI Block command - section 5.11) Both SCSI_PASS_THROUGH(defined in ntddscsi.h) and SCSI_REQUEST_BLOCK (define in srb.h) structures in windows DDK have UCHAR Cdb[16]; Please let me know how to send 32 byte CDB from windows application.... more »
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Unit testing of WDK driver utility DLL function
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I am at a loss rigth now! I have a utility DLL for a Port monitor compiled with the WDK and want to write Unit tests for exported functions in VS 2008. When I am linking the LIB in VS and compile the Unit test DLL with the function in question I am getting an unresolved external error with the reference to this name... more »
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WDF Interrupt Issue
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Hi all, I am working with a PCI based WDF function driver. I've created an interrupt object using wdfinterruptcreate() & initialized the WDF_INTERRUPT_CONFIG with ISR handler, DPC routine. From the WDF documentation, i found that the framework takes care of adding interrupt resource information when the device moves into D0 state. Now the problem is,... more »
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