diff --git a/src/main/java/speiger/src/coreengine/rendering/gui/layout/constraints/ConstrainedContext.java b/src/main/java/speiger/src/coreengine/rendering/gui/layout/constraints/ConstrainedContext.java
index a2f6c61..3d2aaad 100644
--- a/src/main/java/speiger/src/coreengine/rendering/gui/layout/constraints/ConstrainedContext.java
+++ b/src/main/java/speiger/src/coreengine/rendering/gui/layout/constraints/ConstrainedContext.java
@@ -33,8 +33,8 @@ public class ConstrainedContext {
 			totals[3] += weights[i*2+1];
 		}
 		IGuiBox box = owner.getBox();
-		totals[0] -= box.getBaseWidth();
-		totals[1] -= box.getBaseHeight();
+		totals[0] = box.getBaseWidth() - totals[0];
+		totals[1] = box.getBaseHeight() - totals[1];
 		if(totals[2] > 0F) {
 			float scale = 1F / totals[2];
 			for(int i = 0,m=children.size();i<m;i++) {
diff --git a/src/main/java/speiger/src/coreengine/rendering/gui/layout/constraints/Constraints.java b/src/main/java/speiger/src/coreengine/rendering/gui/layout/constraints/Constraints.java
index 3741ce6..78fab0f 100644
--- a/src/main/java/speiger/src/coreengine/rendering/gui/layout/constraints/Constraints.java
+++ b/src/main/java/speiger/src/coreengine/rendering/gui/layout/constraints/Constraints.java
@@ -81,21 +81,24 @@ public class Constraints {
 		
 		@Override
 		public void apply(IGuiBox owner, IGuiBox parent, Target target, ConstrainedContext context) {
-			target.set(owner, value * (target.asArea().get(parent) - padding));
+			float result = value * target.asArea().get(parent);
+			target.set(owner, target.isPosition() ? result + padding : result - padding * 2F);
 		}
 		
 		@Override
 		public void fetch(IGuiBox owner, IGuiBox parent, Target target, ConstrainedContext context) {
-			context.addBound(value * (target.asArea().get(parent) - padding), target.isXAxis());
+			context.addBound(value * target.asArea().get(parent), target.isXAxis());
 		}
 	}
 	
-	public static record Weighted(float weight) implements ISimpleConstraint {
-		public static Weighted of(float weight) { return new Weighted(weight); }
+	public static record Weighted(float weight, float padding, boolean inverted) implements ISimpleConstraint {
+		public static Weighted of(float weight) { return new Weighted(weight, 0F, false); }
 		
 		@Override
 		public void apply(IGuiBox owner, IGuiBox parent, Target target, ConstrainedContext context) {
-			target.set(owner, target.get(context));
+			float value = target.get(context);
+			if(inverted) target.set(owner, target.isPosition() ? target.asArea().get(parent) - value - padding : value - padding * 2);
+			else target.set(owner, target.isPosition() ? value + padding : value - padding * 2);
 		}
 
 		@Override
@@ -130,11 +133,10 @@ public class Constraints {
 		public void apply(GuiComponent owner, GuiComponent parent, Target target, ConstrainedContext context) {
 			(supplier.getAsBoolean() ? onTrue : onFalse).apply(owner, parent, target, context);
 		}
-
+		
 		@Override
 		public void fetch(GuiComponent owner, GuiComponent parent, Target target, ConstrainedContext context) {
 			(supplier.getAsBoolean() ? onTrue : onFalse).fetch(owner, parent, target, context);
-			
 		}
 	}
 }
diff --git a/src/main/java/speiger/src/coreengine/rendering/input/window/Window.java b/src/main/java/speiger/src/coreengine/rendering/input/window/Window.java
index 527ae96..6c26c92 100644
--- a/src/main/java/speiger/src/coreengine/rendering/input/window/Window.java
+++ b/src/main/java/speiger/src/coreengine/rendering/input/window/Window.java
@@ -8,6 +8,7 @@ import org.lwjgl.opengl.GLCapabilities;
 import org.lwjgl.system.CallbackI;
 
 import speiger.src.collections.objects.lists.ObjectArrayList;
+import speiger.src.coreengine.math.BitUtil;
 import speiger.src.coreengine.math.vector.ints.Vec4i;
 import speiger.src.coreengine.rendering.input.window.IWindowListener.Reason;
 import speiger.src.coreengine.rendering.input.window.WindowCallback.ReloadFunction;
@@ -62,6 +63,10 @@ public class Window {
 		flags.setFlag(VSYNC, builder.vsync);
 		flags.setFlag(CPU_FPS_CAP, builder.fpsCap);
 		createDefaultWindowHints();
+		for(int i = 0,m=builder.windowHints.size();i<m;i++) {
+			long value = builder.windowHints.getLong(i);
+			GLFW.glfwWindowHint(BitUtil.intKey(value), BitUtil.intValue(value));
+		}
 		GLFW.glfwWindowHint(GLFW.GLFW_SAMPLES, antialiasing);
 		GLFW.glfwWindowHint(GLFW.GLFW_RESIZABLE, flags.isFlagSet(RESIZABLE) ? GLFW.GLFW_TRUE : GLFW.GLFW_FALSE);
 		GLFW.glfwWindowHint(GLFW.GLFW_DECORATED, flags.isFlagNotSet(FULL_SCREEN) && flags.isFlagSet(BORDERLESS) ? GLFW.GLFW_FALSE : GLFW.GLFW_TRUE);
diff --git a/src/main/java/speiger/src/coreengine/rendering/input/window/WindowManager.java b/src/main/java/speiger/src/coreengine/rendering/input/window/WindowManager.java
index 09e77ca..dcfbe71 100644
--- a/src/main/java/speiger/src/coreengine/rendering/input/window/WindowManager.java
+++ b/src/main/java/speiger/src/coreengine/rendering/input/window/WindowManager.java
@@ -8,9 +8,12 @@ import org.lwjgl.glfw.GLFW;
 import org.lwjgl.system.Callback;
 import org.lwjgl.system.CallbackI;
 
+import speiger.src.collections.longs.lists.LongArrayList;
+import speiger.src.collections.longs.lists.LongList;
 import speiger.src.collections.longs.maps.impl.concurrent.Long2ObjectConcurrentOpenHashMap;
 import speiger.src.collections.longs.maps.interfaces.Long2ObjectMap;
 import speiger.src.collections.objects.lists.ObjectArrayList;
+import speiger.src.coreengine.math.BitUtil;
 import speiger.src.coreengine.rendering.input.devices.InputDevice;
 import speiger.src.coreengine.rendering.input.window.WindowCallback.SimpleReloadFunction;
 
@@ -149,6 +152,7 @@ public class WindowManager {
 	public static class WindowBuilder {
 		WindowManager manager;
 		long monitor;
+		LongList windowHints = new LongArrayList();
 		VideoMode fullScreenTarget;
 		String title = "";
 		int width = 640;
@@ -248,6 +252,11 @@ public class WindowManager {
 			fpsCap = cap;
 			return this;
 		}
+		
+		public WindowBuilder addCustomHint(int key, int value) {
+			windowHints.add(BitUtil.toLong(key, value));
+			return this;
+		}
 				
 		public Window build() {
 			return manager.create(this);