SKSE System Messages

When certain events happen, SKSE sends “messages” which your plugin can listen for:

Types of messages

Message Description
kPostLoad Sent once all SKSE plugins have been loaded.
kPostPostLoad Sent immediately after kPostLoad has been sent to all plugins. (Used to help coordinate cross-plugin messaging.)
kInputLoaded Sent after the game’s input initializes, right before the Main Menu initializes
kDataLoaded Sent after all of the game plugin files have been loaded (all Forms are loaded)
kNewGame Sent after a new game has been created, but before the game has loaded
kSaveGame Sent when saving a game
kDeleteGame Sent right before deleting the .skse cosave and the .ess save
kPreLoadGame Runs before the savegame is loaded by Skyrim
kPostLoadGame Runs after the savegame has been loaded by Skyrim.

Listening for messages

Registration of a plugin’s listener function is done via the SKSE Messaging Interface:

auto* messagingInterface = SKSE::GetMessagingInterface();

Use RegisterListener to provide a callback which returns void and accepts a pointer to the Message being sent:


// ...

void OnMessage(SKSE::MessagingInterface::Message* message) {
    // This function can read the Message* being sent 


An SKSE Message has 4 fields:

Field Description
->type An integer representing one of the enum values listed above
(kDataLoaded, kSaveGame, …)
->sender The name of the plugin which sent this message
(For system messages, this will always be "SKSE")
->data A void* pointing at a data structure sent with this message, if any
->dataLen If data is not a nullptr, this will be the sizeof the data structure

Provided data for different types of messages

Some SKSE messages are sent with data:

Message Description
kPostLoad (no data)
kPostPostLoad (no data)
kInputLoaded (no data) ? todo: verify ?
kDataLoaded (no data) ? todo: verify ?
kNewGame CharGen TESQuest*
kSaveGame (???) ? todo: verify ?
kDeleteGame char* file path of .ess savegame file
kPreLoadGame char* file path of .ess savegame file
kPostLoadGame bool, true if game successfully loaded, false otherwise