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MF_FILE_OPENMODE enumeration (mfobjects.h)

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Specifies how to open or create a file.

Syntax

typedef enum __MIDL___MIDL_itf_mfobjects_0000_0018_0002 {
  MF_OPENMODE_FAIL_IF_NOT_EXIST = 0,
  MF_OPENMODE_FAIL_IF_EXIST = 1,
  MF_OPENMODE_RESET_IF_EXIST = 2,
  MF_OPENMODE_APPEND_IF_EXIST = 3,
  MF_OPENMODE_DELETE_IF_EXIST = 4
} MF_FILE_OPENMODE;

Constants

 
MF_OPENMODE_FAIL_IF_NOT_EXIST
Value: 0
Open an existing file. Fail if the file does not exist.
MF_OPENMODE_FAIL_IF_EXIST
Value: 1
Create a new file. Fail if the file already exists.
MF_OPENMODE_RESET_IF_EXIST
Value: 2
Open an existing file and truncate it, so that the size is zero bytes. Fail if the file does not already exist.
MF_OPENMODE_APPEND_IF_EXIST
Value: 3
If the file does not exist, create a new file. If the file exists, open it.
MF_OPENMODE_DELETE_IF_EXIST
Value: 4
Create a new file. If the file exists, overwrite the file.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Header mfobjects.h (include Mfidl.h)

See also

MFBeginCreateFile

MFCreateFile

MFCreateTempFile

Media Foundation Enumerations