Getting 0x8000000B with _wfopen (C++/CX)

Question

I cannot open file in UWP C++ App.

• The file is here: C:\Users\user\Documents\Some\Path\File.xml.
• My UWP app has broadFileSystemAccess in Package.appxmanifest.
• My app has access to file system in windows settings.

_wfopen returns nullptr and a message about 0x8000000B is written to Output window. From Windows.Storage.ApplicationData.dll or something.
What's happening? What else should I do?

Answer 1

Hello,

Welcome to Microsoft Q&A.

Referring to the document, you need to note the broadFileSystemAccess capability works for APIs in the Windows.Storage namespace.

In my side, I use _wfopen_s to replace _wfopen because _wfopen is deprecated and we are suggested to use _wfopen_s instead. I check the value of errno_t by using _get_error method, the result is 13 which represents Permission denied.

We suggest you use StorageFile.GetFileFromPathAsync method under Windows.Storage namespace to get a StorageFile.

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