Show GUI when Inventory is open

Hi,

What's the best way to open custom GUI when player opens inventory? I don't want to replace inventory GUI but add some text on left side.

Tried player.openGui on GuiOpenEvent but nothing is displayed.

@SubscribeEvent
public void OnGuiOpen(GuiOpenEvent event) {
	if(event.getGui() != null && event.getGui() instanceof GuiInventory) {
		EntityPlayer player = Minecraft.getMinecraft().player;
			
		if(!player.capabilities.isCreativeMode) {
			player.openGui(Main.instance, GuiHandler.INV_GUI, player.getEntityWorld(), player.getPosition().getX(), player.getPosition().getY(), player.getPosition().getZ());
		}
	}
}

GuiHandler

public class GuiHandler implements IGuiHandler {
	public static final int TEST_GUI = 0;
	public static final int INV_GUI = 1;

	@Override
	public Object getServerGuiElement(int id, EntityPlayer player, World world, int x, int y, int z) {
		return null;
	}

	@Override
	public Object getClientGuiElement(int id, EntityPlayer player, World world, int x, int y, int z) {
		switch (id) {

		case TEST_GUI:
			return new TestGUI();
			
		case INV_GUI:
			return new InvGUI();

		}

		return null;
	}
}

InvGUI

@SideOnly(Side.CLIENT)
public class InvGUI extends Gui {
	
	public InvGUI()
	{
		super();
	}
	
	@SubscribeEvent
	public void onRenderOverlay(RenderGameOverlayEvent.Pre event)
	{
	}

	@SubscribeEvent
	public void onRenderOverlayText(RenderGameOverlayEvent.Text event) {
		ScaledResolution sr = event.getResolution();
		EntityPlayer player = Minecraft.getMinecraft().player;

		if (!player.capabilities.isCreativeMode) {
			String health = (int) player.getHealth() + " / " + (int) player.getMaxHealth();

			GL11.glPushMatrix();
			GL11.glScalef(1.0F, 1.0F, 1.0F);
			Minecraft.getMinecraft().fontRenderer.drawStringWithShadow(
					health,
					0,
					0,
					0xFFFFFF);
			GL11.glPopMatrix();
		}
	}

}

GUI works if displayed on button press or when player joins game. So there is nothing wrong.

Edited August 13, 20187 yr by Oen44