WindowsSDK7-Samples | Repository that has all the samples from the Windows 7 SDK

by pauldotknopf C++ Version: Current License: No License

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kandi X-RAY | WindowsSDK7-Samples Summary

WindowsSDK7-Samples is a C++ library. WindowsSDK7-Samples has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

!!UPDATE: Microsoft has created an official repository that includes more than just the Windows 7 samples!!.

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It has 293 star(s) with 378 fork(s). There are 43 watchers for this library.

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Community Discussions

Trending Discussions on WindowsSDK7-Samples

Custom windows credential provider crashes with Exception code: 0xc0000374

Wifi WPS client start in Windows 10 in script or code

closesocket() not completing pending operations of IOCP

invalid cast from void(WINAPI*)(...) to LPVOID

QUESTION

Custom windows credential provider crashes with Exception code: 0xc0000374

Asked 2018-Feb-28 at 04:41

I have developed a custom credential provider. This credential provider uses 1) camera 2) facial sdk to match the user. Once the user is matched account name is populated and CredentialsChanged signal is triggered. I have customized samplehardwareeventcredentialprovider to achieve this functionality. This works fine with few of the machine ( all windows 10). When I tried to execute this another machine ( different brand), I get the following exception randomly and makes the screen go black , unstable login screen. All the dependencies are in place but it is not stable at all.

I have turned off the winbio service, disabled many of default credential providers but I face the same issue.

My Flow:

I initiate the facial identification flow in CSampleCredential::Initialize api and once it is identified, update the value for rgFieldStrings[SFI_USERNAME]

In the following method, after completing CSampleCredential::Initialize , I use CSampleProvider::OnConnectStatusChanged method to trigger login window. If everything works as expected, it launches login window with user name auto populated. The entire flow works file, but it is not stable in few machine.

HRESULT CSampleProvider::SetUsageScenario( __in CREDENTIAL_PROVIDER_USAGE_SCENARIO cpus, __in DWORD dwFlags )

Am I doing something fundamentally wrong here?

Any pointers will be helpful! Thanks

...

ANSWER

Answered 2018-Feb-28 at 04:41

I generated localdump by following Steps to Catch a Simple “Crash Dump” of a Crashing Process

By analyzing the log, it was evident that there was a heap corruption. By mistake, malloc allocation was done for the size of 4. Actually this allocation should be of size 260. When the memory is accessed beyond this size, it was triggering the random crash based on the input data.

Original code with bug:

uint8_t* data = (uint8_t*)malloc(sizeof(MAX_PATH));

Fixed code:

uint8_t* data = (uint8_t*)malloc(MAX_PATH*sizeof(uint8_t));

Source https://stackoverflow.com/questions/48982879

QUESTION

Wifi WPS client start in Windows 10 in script or code

Asked 2018-Jan-26 at 12:39

I can not find how to start WPS client in Windows 10 from command prompt or powershell. When I used Linux, everything was really ease with wla_supplicant (wpa_cli wps_pbc). Is there something similar in Windows?

Does anyone know how to set up Wi-Fi network (over WPS) key without human input in Windows?

I also tried WCN (Windows Connect Now) from Microsoft as it implements WPS features. I got also samples from Windows SDK on WCN, but they could not get key by WPS (it faild). But if I use Windows user interface to connect wiothout PIN, everyting seems to be pretty fine.

I am sure that there is possibility to do that, it is very important to perform Wifi Protected Setup by button start from the command prompt or app (C++/C#) without human intrusion or input (once WPS is on air, Windows should automatically get the network key and connect then).

...

ANSWER

Answered 2018-Jan-26 at 12:39

I don't know if it's too late to answer, just put what I know in here and hope it can help.

First, if your system has updated to 16299(Fall Creator Update), you can just simply use new wifi api from UWP. Install newest Windows SDK, create a C# console project, target C# version to at least 7.1, then add two reference to the project.

C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETCore\v4.5\System.Runtime.WindowsRuntime.dll
C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.16299.0\Windows.winmd

After all of that , code in below should work.

Source https://stackoverflow.com/questions/43002906

QUESTION

closesocket() not completing pending operations of IOCP

Asked 2017-Oct-13 at 06:11

I am currently working on a server application in C++. My main inspirations are these examples:

Windows SDK IOCP Excample

The I/O Completion Port IPv4/IPv6 Server Program Example

My app is strongly similar to these (socketobj, packageobj, ...).

In general, my app is running without issues. The only things which still causes me troubles are half open connections.

My strategy for this is: I check every connected client in a time period and count an "idle counter" up. If one completion occurs, I reset this timer. If the Idle counter goes too high, I set a boolean to prevent other threads from posting operations, and then call closesocket().

My assumption was that now the socket is closed, the pending operations will complete (maybe not instantly but after a time). This is also the behavior the MSDN documentation is describing (hints, second paragraph). I need this because only after all operations are completed can I free the resources.

Long story short: this is not the case for me. I did some tests with my testclient app and some cout and breakpoint debugging, and discovered that pending operations for closed sockets are not completing (even after waiting 10 min). I also already tried with a shutdown() call before the closesocket(), and both returned no error.

What am I doing wrong? Does this happen to anyone else? Is the MSDN documentation wrong? What are the alternatives?

I am currently thinking of the "linger" functionality, or to cancel every operation explicitly with the CancelIoEx() function

Edit: (thank you for your responses)

Yesterday evening I added a chained list for every sockedobj to hold the per io obj of the pending operations. With this I tried the CancelIOEx() function. The function returned 0 and GetLastError() returned ERROR_NOT_FOUND for most of the operations.

Is it then safe to just free the per Io Obj in this case?

I also discovered, that this is happening more often, when I run my server app and the client app on the same machine. It happens from time to time, that the server is then not able to complete write operations. I thought that this is happening because the client side receive buffer gets to full. (The client side does not stop to receive data!).

Code snipped follows as soon as possible.

...

ANSWER

Answered 2017-Oct-12 at 07:00

The 'linger' setting can used to reset the connection, but that way you will (a) lose data and (b) deliver a reset to the peer, which may terrify it.
If you're thinking of a positive linger timeout, it doesn't really help.
Shutdown for read should terminate read operations, but shutdown for write only gets queued after pending writes so it doesn't help at all.
If pending writes are the problem, and not completing, they will have to be cancelled.

Source https://stackoverflow.com/questions/46703070

QUESTION

invalid cast from void(WINAPI*)(...) to LPVOID

Asked 2017-Jan-03 at 13:17

i'm trying to use this code [RasDialAsync.c] (https://github.com/pauldotknopf/WindowsSDK7-Samples/blob/master/netds/ras/rasdialasync/RasDialAsync.c) inside QT , i have only one error that i can't figure it out . what is this ? how can i fix this ? here is the function header :
My RasDialFunc function :

...

ANSWER

Answered 2017-Jan-03 at 12:25

These Following Comments are my answer :

It is, technically, illegal to cast between a function pointer and an object pointer. The standard allows them to have different sizes. For better or worse, WinAPI requires such a cast in a number of places (and I seem to recall there are some POSIX functions that do, too). MSVC compiler never complained about such a cast, but you are using GCC, which seems to want to be pedantic about it. I suspect there's might be some command line option that would make GCC accept it - look for that (I myself am not familiar with GCC). – Igor Tandetnik

reinterpret_cast - E4z9

And the final code is :

Source https://stackoverflow.com/questions/41434458

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