As you can observe at https://github.com/AtomicStryker/atomicstrykers-minecraft-mods/blob/1.8/MultiMine/src/main/java/atomicstryker/multimine/common/MultiMineServer.java#L132, Multi Mine calls the Forge BlockBreak event. A cauldron/spigot/mcpc/whateveritscalled server should allow observation of and interaction with Forge Events.

Yes I view =) it but I am in version 1.5.2 and the method does not exist in ForgeHook so how I can solved it ?

-> ForgeHook : https://github.com/MinecraftForge/MinecraftForge/blob/snapshot15/common/net/minecraftforge/common/ForgeHooks.java

other event has here :
-> ForgeEventFactory : https://github.com/MinecraftForge/MinecraftForge/blob/snapshot15/common/net/minecraftforge/event/ForgeEventFactory.java

Can I use this:

/*
*     on net.minecraftforge.common.ForgeHooks
*
*     onBlockBreakEvent(World world, GameType gameType, EntityPlayerMP entityPlayer, BlockPos pos)
*/

// Tell client the block is gone immediately then process events
        if (world.getTileEntity(pos) == null)
        {
            S23PacketBlockChange packet = new S23PacketBlockChange(world, pos);
            packet.field_148883_d = Blocks.air.getDefaultState();
            entityPlayer.playerNetServerHandler.sendPacket(packet);
        }

        // Post the block break event
        IBlockState state = world.getBlockState(pos);
        BlockEvent.BreakEvent event = new BlockEvent.BreakEvent(world, pos, state, entityPlayer);
        event.setCanceled(preCancelEvent);
        MinecraftForge.EVENT_BUS.post(event);

        // Handle if the event is canceled
        if (event.isCanceled())
        {
            // Let the client know the block still exists
            entityPlayer.playerNetServerHandler.sendPacket(new S23PacketBlockChange(world, pos));

           . . .

        }

Please help me, i think it's possible to correct this on 1.5.2, and I really want to correct this.

Thanks for your answer and your time, so

You are trying to port MultiMine to 1.5.2?

I use your source in 1.5.2, but I want a bukkit plugin can cancel mining because You can break block in protect area ( it's nice for cheater =) but I prefer to correct it )

You should be able to use "if (ForgeEventFactory.getBreakSpeed(player, block, metadata, defaultBlockBreakSpeed) > 0)" if your bukkit plugins listens to that event.

Ok I try it and I send you result, thanks again.

Have you got an project at the moment ?
Because I view on different forum it's able to interact between forge mods and bukkit plugin.
I think it would be great that you develop this.

http://forum.ironcraft.fr/topic/4719-172-dialoguer-entre-forge-et-plugins/
http://forum.ironcraft.fr/topic/672-125-bukkit-afficher-son-argent-dans-linventaire/?page=1
http://www.minecraftforge.net/forum/index.php/topic,28953.0.html

This project require develop a mod API and plugin API for developer and modder.

EDIT : Does not work again :(
I think I try what I explain before

You are trying to port MultiMine to 1.5.2? You should be able to use "if (ForgeEventFactory.getBreakSpeed(player, block, metadata, defaultBlockBreakSpeed) > 0)" if your bukkit plugins listens to that event.

I don't know how proceed to solved it
I think I will create bug :(

You should find a programmer (in your language zone) which can help you. There is also the bukkit and minecraftforge irc channels. This is not the place. I do not support your programming....