How do I send packets from a gui. I don't know how Netty works, so a link to a tutorial would be good aswell

http://www.minecraftforge.net/forum/index.php/topic,20135.0.html

 

I don't know how I would get that working on my gui

And what exacly you want to do? Send packet on GUI open? With button? On closed? on tick? Packet to who? All players or just server?

You have to be more specific.

And what exacly you want to do? Send packet on GUI open? With button? On closed? on tick? Packet to who? All players or just server?

You have to be more specific.

 

I want it to send a packet when I press a button and the packet opens a gui

I don't think it makes sense that "the packet opens a gui" based on a button press.  The buttons are already pressed on the client side where the GUI is open.  So you can open guis however you want without packets.  But if you need information from the server, or if you need gui to cause an effect on the server, that's when you would send a packet.

I don't think it makes sense that "the packet opens a gui" based on a button press.  The buttons are already pressed on the client side where the GUI is open.  So you can open guis however you want without packets.  But if you need information from the server, or if you need gui to cause an effect on the server, that's when you would send a packet.

 

I cant open a gui from with the actionPerformed() method because it doesn't have the right perameters

If you want to open a GUI that extends GuiScreen directly, you can just use

Minecraft.getMinecraft().displayGuiScreen(new YourGUI())

. Else, you will have to use packets.

"I want it to send a packet when I press a button and the packet opens a gui"

 

Packets are NOT used to open GUIs. All client-rendering stuff is being done on Client-side, you don't need ANY packets unless you are:

- using containers (you have to retrieve container-slot itemstacks)

- synchronizing data (some RPG player stats for example)

- doing anything that requires you to contact with other clients / server.

 

"I cant open a gui from with the actionPerformed() method because it doesn't have the right perameters"

 

In actionPerformed you can literally do ANYTHING.

to open GUI client-side use (as saind before) Minecraft.getMinecraft().displayGuiScreen(new YourGUI());

 

 

Please tell us what EXACLY you want to do, because to this point I don't see anything that requires you to use packets.