# FsIOOpenFlags<no value>
The **FsIOOpenFlags** enum is used to specify the different *bit flags* that can be used to set the criteria for opening a file using the IO API.

 

##### Syntax

``` wasm
enum _FsIOOpenFlags : unsigned int
{
    FsIOOpenFlag_NONE   = 0,
    FsIOOpenFlag_RDONLY = 1 << 0,
    FsIOOpenFlag_WRONLY = 1 << 1,
    FsIOOpenFlag_RDWR   = 1 << 2,
    FsIOOpenFlag_CREAT  = 1 << 3,
    FsIOOpenFlag_TRUNC  = 1 << 4,
    FsIOOpenFlag_HIDDEN = 1 << 5,
};
typedef unsigned int FsIOOpenFlags;
```

 

##### Members

{{< table-wrapper >}}

| Enum Member           | Integer Value | Description                                                                                                                                            |
|-----------------------|:-------------:|--------------------------------------------------------------------------------------------------------------------------------------------------------|
| `FsIOOpenFlag_NONE`   |       0       | No flags should be used for the file operation.                                                                                                        |
| `FsIOOpenFlag_RDONLY` |       1       | The file operation should open the file in read-only mode.                                                                                             |
| `FsIOOpenFlag_WRONLY` |       2       | The file operation should open the file in write-only mode.                                                                                            |
| `FsIOOpenFlag_RDWR`   |       4       | The file operation should open the file in read *and* write mode.                                                                                      |
| `FsIOOpenFlag_CREAT`  |       8       | The file operation should create the file if it doesn't exist when the open operation is performed.                                                    |
| `FsIOOpenFlag_TRUNC`  |       16      | The file operation should override the file contents if the file being opened already exists.                                                          |
| `FsIOOpenFlag_HIDDEN` |       32      | If the file operation is creating a new file, it should be created with **hidden** tag. If the file is not being created, this option will do nothing. |

{{< /table-wrapper >}}


 

##### Remarks

N/A