D++ (DPP)
C++ Discord API Bot Library
Ephemeral Replies ('Only You Can See This' Replies)

If you've used a Discord bot, there's a chance that you've encountered a message from one that said "Only you can see this" after you interacted with it (or executed a command). These messages are pretty helpful and can be used in many instances where you'd only like the user that's interacting to see what's going on.

Here's how you can do exactly that!

#include <dpp/dpp.h>
int main() {
/* Create the bot */
dpp::cluster bot("token");
/* The event is fired when someone issues your commands */
bot.on_slashcommand([&bot](const dpp::slashcommand_t & event) {
/* Check which command they ran */
if (event.command.get_command_name() == "hello") {
/* Reply to the user, but only let them see the response. */
event.reply(dpp::message("Hello! How are you today?").set_flags(dpp::m_ephemeral));
}
});
bot.on_ready([&bot](const dpp::ready_t & event) {
if (dpp::run_once<struct register_bot_commands>()) {
/* Create and Register the command */
bot.global_command_create(dpp::slashcommand("hello", "Hello there!", bot.me.id));
}
});
bot.start(dpp::st_wait);
return 0;
}

That's it! If everything went well, it should look like this:

dpp::slashcommand_t
User has issued a slash command.
Definition: dispatcher.h:715
dpp::st_wait
@ st_wait
Wait forever on a condition variable. The cluster will spawn threads for each shard and start() will ...
Definition: cluster.h:101
dpp::interaction_create_t::command
interaction command
command interaction
Definition: dispatcher.h:698
dpp::slashcommand
Represents an application command, created by your bot either globally, or on a guild.
Definition: appcommand.h:1358
dpp::utility::cout_logger
std::function< void(const dpp::log_t &)> DPP_EXPORT cout_logger()
Get a default logger that outputs to std::cout. e.g.
Definition: dispatcher.h:228
dpp::interaction::get_command_name
std::string get_command_name() const
Get the command name for a command interaction.
dpp::cluster
The cluster class represents a group of shards and a command queue for sending and receiving commands...
Definition: cluster.h:99
dpp::ready_t
Session ready.
Definition: dispatcher.h:981
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