[1.15.2]Can't call method .getMainWindow()

[me1]

I followed a tutorial and there was the following code:

return InputMappings.isKeyDown(Minecraft.getInstance().getMainWindow().getHandle(), glfw);

But for me the 'getMainWindow()' was underlined red.

I looked through the IntelliJ-Hints and the only function whitch returns a 'MainWindow' is 'func_228018_at_()'.

When I run it with MainWindow it starts minecraft but closes it again after some time saying:

[16:19:41] [Render thread/INFO] [STDOUT/]: [net.minecraft.util.registry.Bootstrap:printToSYSOUT:109]: ---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 03.04.20 16:19
Description: Initializing game

java.lang.NoSuchMethodError: net.minecraft.client.Minecraft.getMainWindow()Lnet/minecraft/client/MainWindow;
	at com.nkdm.emptyblock.EmptyBlock.getKey(EmptyBlock.java:68) ~[main/:?] {re:classloading}
	at     *...*
    
    
    Process finished with exit code -1

 

When I run it with func_228018_at_ it instantly says:

C:\Users\*ME1*\IdeaProjects\emptyblock\src\main\java\com\nkdm\emptyblock\EmptyBlock.java:68: error: cannot find symbol
        return InputMappings.isKeyDown(Minecraft.getInstance().func_228018_at_().getHandle(), glfw);
                                                              ^
  symbol:   method func_228018_at_()
  location: class Minecraft

 

I use IntelliJ and have the newest mappings.

Please help!

Edited April 3, 2020 by me1

[Draco18s]

16 minutes ago, me1 said:

NoSuchMethodError

That method probably got renamed. You can't call it because it doesn't exist because you have the wrong name.

Use your IDE to search for methods and find one that looks like it does what you want.

[me1]

@Draco18s That's what I did and that's how I found 'func_228018_at_()'. It's the only one witch returns a 'MainWindow'.

[ultra_reemun]

5 minutes ago, me1 said:

@Draco18s That's what I did and that's how I found 'func_228018_at_()'. It's the only one witch returns a 'MainWindow'.

Try searching for .getHandle() instead, then find what that's in?

 

[me1]

@ultra_reemun There is no .getHandle in the class Minecraft.

[ultra_reemun]

Just now, me1 said:

@ultra_reemun There is no .getHandle in the class Minecraft.

My bad, sorry

[Draco18s]

57 minutes ago, me1 said:

@Draco18s That's what I did and that's how I found 'func_228018_at_()'. It's the only one witch returns a 'MainWindow'.

Please don't @ me.
And I don't see what the problem is. If your mappings are up to date, then no one's renamed the method yet. There's no "solution"

[Panteleymoon]

I had the same problem, and here how I solved it:

import org.lwjgl.glfw.GLFW;
import net.minecraft.client.Minecraft;
import net.minecraft.client.util.InputMappings;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

public class KeyboardHelper 
{	
	private static final long WINDOW = Minecraft.getInstance().func_228018_at_().getHandle();

	@OnlyIn(Dist.CLIENT)
	public static boolean isHoldingShift()
	{
		return InputMappings.isKeyDown(WINDOW, GLFW.GLFW_KEY_LEFT_SHIFT);
	}