Camel.VeeFolder.set_expression_sync

### Method

# Camel VeeFolderset_expression_sync

since: 3.58

#### Declaration [src]

    gboolean
    camel_vee_folder_set_expression_sync (
      CamelVeeFolder* vfolder,
      const gchar* expression,
      CamelVeeFolderOpFlags op_flags,
      GCancellable* cancellable,
      GError** error
    )

#### Description [src]

Sets an SExp expression to be used for this `vfolder` and updates its content. The expression is not changed when the call fails.

Available since: 3.58

#### Parameters

`expression`

  Type: `const gchar*`

  An SExp expression to set.

  The data is owned by the caller of the method.
  The value is a NUL terminated UTF-8 string.

`op_flags`

  Type: `CamelVeeFolderOpFlags`

  Bit-or of `CamelVeeFolderOpFlags`.

`cancellable`

  Type: `GCancellable`

  A `GCancellable`, or `NULL`.

  The argument can be `NULL`.
  The data is owned by the caller of the method.

`error`

  Type: `GError **`

  The return location for a recoverable error.

  The argument can be `NULL`.
  If the return location is not `NULL`, then you must initialize it to a `NULL` `GError*`.
  The argument will be left initialized to `NULL` by the method if there are no errors.
  In case of error, the argument will be set to a newly allocated `GError`; the caller will take ownership of the data, and be responsible for freeing it.

#### Return value

Type: `gboolean`

Whether succeeded.