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try to create a directory using CreateDirectory of try to create a file using CreateFile API function.<br />
if one of above functions failed, check error reason using GetLastError() API to get error code.<br />
if(GetLastError() == ERROR_ACCESS_DENIED) // or if(GetLastError() == 5)<br />
//means that access denied<br />
as &quot;Wayside&quot;s comment: quick and dirty way ;)<br />
Regards
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try to create a directory using CreateDirectory of try to create a file using CreateFile API function.
if one of above functions failed, check error reason using GetLastError() API to get error code.
if(GetLastError() == ERROR_ACCESS_DENIED) // or if(GetLastError() == 5)
//means that access denied
as "Wayside"s comment: quick and dirty way ;)
Regards

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I would like to comment that RevertToSelf is necessary at the bottom of this function otherwise it keeps running in the context of the client and this is undesirable. It caused issues with my application until I figured this out. I called RevertToSelf, and then CloseHandle(hToken) and this resolved issues. 
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I would like to comment that RevertToSelf is necessary at the bottom of this function otherwise it keeps running in the context of the client and this is undesirable. It caused issues with my application until I figured this out. I called RevertToSelf, and then CloseHandle(hToken) and this resolved issues.

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How do use MFC to check if the current user has write access to a directory?
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How do use MFC to check if the current user has write access to a directory?

Check directory for write access by current user

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.

System Programming

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.