mail::ACCOUNT::updateFolderIndexFlags
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## Name

mail::ACCOUNT::updateFolderIndexFlags — Update status of multiple messages

## Synopsis

#include <libmail/sync.H>
mail::ACCOUNT *mail;

`bool ok=mail->fsfuncupdateFolderIndexFlags(` | const std::vector<size_t> msgList,
| bool doFlip,
| bool enableDisable,
| const messageInfo &msgInfo`)`;

std::string errmsg=mail->getErrmsg();

## USAGE

This is a version of mail::ACCOUNT::saveFolderIndexInfo(3x) that updates the status of multiple messages with one request.

`msgList` specifies a list of messages. Messages are numbered starting with message #0 and up to one less than mail::ACCOUNT::getFolderIndexSize(3x) (when `mail::account::getFolderIndexSize` returns 6, the messages are numbered 0 through 5). Only the messages that appear in `msgList` are processed by this request. When a message is removed from the folder, by mail::ACCOUNT::updateFolderIndexInfo(3x), the following messages are renumbered accordingly.

### Note

Most mail servers allow multiple applications to open the same folder. Therefore, changes to the folder's contents can occur at any time. Before making this request, the application should use mail::ACCOUNT::checkNewMail(3x) to verify that no unexpected changes have been made to the folder's contents.

`msgInfo` selects which message status flags should be updated in every message. See mail::ACCOUNT::getFolderIndexInfo(3x).

`msgInfo` does NOT specify the new value of the status flags, only which status flags should be updated. For example, setting `msgInfo`.`marked` to true indicates that the messages' `marked` status flag will be set to the value specified by `doFlip` and `enableDisable`.

Setting `doFlip` to `true` "flips" the selected status flags (each message's flag will be set to false if the status flag was originally true, and set to true if the status flag was originalfalse). If `doFlip` is false, then the selected status flags are set to the value of `enableDisable` `enableDisable` is ignored when Setting `doFlip` is true.

## Return Codes

This method returns `true` if it succeeds, or `false` if it fails. If the method fails, use `mail::ACCOUNT::getErrmsg()` to read a brief description of the error.

## SEE ALSO

mail::ACCOUNT::saveFolderIndexInfo(3x), mail::ACCOUNT::getFolderIndexInfo(3x).

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