The MSDN page on CreateFile says: The string "\\.\C:\" can be used to open the file system of the C: volume. However, the following code always returns an error : ERROR_PATH_NOT_FOUND. HANDLE h = ...

I'm trying to prevent a third-party DLL in my process from reading a file I've opened, and I've found it to be... well, impossible. No matter what I do, no matter what share flags I specify, their...

I recently redesigned the security on a file server of ours, marking most of what was Full Control to be Modify. Now my developers are telling me that whenever they use GENERIC_ALL to open a file (...

When I use vim newfilename to open a file and this file does not exit, vim will create a new file with the name newfilename. However, MacVim does not work in this way --- i.e. mvim newfilename (al...

I am opening a serial port using CreateFile(). I've got a testcase (too complicated to redistribute) that consistently causes CreateFile() to return INVALID_HANDLE_VALUE and GetLastError() to retur...

Ultimate goal: I want to create a webpage where a user can enter information in forms. With that information I want to create a html file (below called test-download.html) by inserting the informat...

I need to create a file if it does not exist, in a way that another process trying to create this file would fail. I need the file be considered "created" even before the creating process finished ...

I tried to use the File class to create an empty file in a directory like "C:/Temp/Emptyfile". However, when I do that, it shows me an error : "already made folder Temp". Otherwise, it won't ...

I am creating a file of a specified size - I don't care what data is in it, although random would be nice. Currently I am doing this: var sizeInMB = 3; // Up to many Gb using (FileStream stream ...

I keep getting this error: cannot convert parameter 1 from 'char' to 'LPCWSTR' int main(int argc, char argv[]) { // open port for I/O HANDLE h = CreateFile(argv[1],GENERIC_READ|GENERIC_WRITE,0...

I am working with USB device on Windows that is seen as a virtual serial port. I can communicate with the device using CreateFile and ReadFile functions, but in some cases my application does not c...

What are the differences, and in what cases one or the other would prove superior in some way?

Before I describe my problem, here is a description of the program (IHExplorer.exe) I'm writting: This is a C++ application. The IHExplorer application is to look as much like a Windows Explorer ...