CreateFile() can be used to get a handle to a serial port. The "Win32 Programmer's Reference" entry for "CreateFile()" mentions that the share mode must be 0, the create parameter must be OPEN_EXISTING, and the template must be NULL. CreateFile() is successful when you use "COM1" through "COM9" for the name of the file; however, the message
How to create a file in UTF-8 mode using CreateFile API we can use fopen with mode set to UTF8 encoding but i didnt find anything similar to CreateFile API . Jul 22, 2014 · DeviceHandleLocal = CreateFile( DevicePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL); Because I need the read and the write function regularly alternating I want to create one read-write-handle with both access options like When opening an existing file, CreateFile performs the following actions: Combines the file flags specified by dwFlagsAndAttributes with existing file attributes. CreateFile ignores the file attributes specified by dwFlagsAndAttributes. Sets the file length according to the value of dwCreationDisposition. Ignores the hTemplateFile parameter. It is typically the return value of a call to the CreateFile() function. Since in this case we are trying to save a file, the file should/must have been created with at least the GENERIC_WRITE flag for the dwDesiredAccess argument of the CreateFile() function. The lpBuffer argument is the object that will be saved. A backup operation fails on a specific file with a Windows return code of 121
You can open a physical or logical drive using the CreateFile() application programming interface (API) with these device names provided that you have the appropriate access rights to the drive (that is, you must be an administrator). You must use both the CreateFile() FILE_SHARE_READ and FILE_SHARE_WRITE flags to gain access to the drive.
Dec 06, 2018 · In this article, we will look at the example of using the CreateFile and OpenFile win32 API functions with an MFC Dialog based application. Win32 is a rich API that supplies numerous functions and MFC is just a Framework wrapped over those functions to form logical functioning unit.
CreateFile Windows COM1. C / C++ Forums on Bytes. weird! I tried the following: 1. char str; //port was passed in through the function parameter
To compile an application that uses the CreateFile2 function, define the _WIN32_WINNT macro as 0x0602 or later. For more information, see Using the Windows Headers. CreateFile2 supports file interaction and most other types of I/O devices and mechanisms available to Windows developers. If you are deleting an open file or directory on a remote machine and it has already been opened on the remote machine without the read share permission set, do not call CreateFile or OpenFile to open the file or directory for deletion first. Doing so will result in a sharing violation. Friend Function CreateFile(ByVal lpFileName As String, _ ByVal dwDesiredAccess As EFileAccess, _ ByVal dwShareMode As EFileShare, _ ByVal lpSecurityAttributes As IntPtr, _ ByVal dwCreationDisposition As ECreationDisposition, _ ByVal dwFlagsAndAttributes As EFileAttributes, _ ByVal hTemplateFile As IntPtr) As Microsoft.Win32.SafeHandles Win32 File API CreateFile function Download EaseFilter Monitor, Control and Encryption Filter Driver SDK Setup File Download EaseFilter Monitor, Control and Encryption Filter Driver SDK Zip File Creates or opens a file or I/O device. The following are 38 code examples for showing how to use win32file.CreateFile(). They are from open source Python projects. You can vote up the examples you like or vote down the ones you don't like. You may also check out all available functions/classes of the module win32file, or try the search function . The CreateFile() is a Win32 API that creates or opens a file or I/O device. On success CreateFile() returns a handle that can be used to access the file or device depending on the flags and attributes specified.