diff --git a/packages/sciter/.vscode/launch.json b/packages/sciter/.vscode/launch.json
new file mode 100644
index 0000000..ef52570
--- /dev/null
+++ b/packages/sciter/.vscode/launch.json
@@ -0,0 +1,19 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Launch",
+            "type": "lldb",
+            "request": "launch",
+            "program": "${workspaceFolder}/zig-out/bin/sciter",
+            "args": [],
+            "cwd": "${workspaceFolder}/zig-out/bin",
+        },
+        {
+            "name": "Attach",
+            "type": "lldb",
+            "request": "attach",
+            "program": "${workspaceFolder}/zig-out/bin/sciter",
+        },
+    ]
+}
diff --git a/packages/sciter/.vscode/settings.json b/packages/sciter/.vscode/settings.json
new file mode 100644
index 0000000..c430907
--- /dev/null
+++ b/packages/sciter/.vscode/settings.json
@@ -0,0 +1,6 @@
+{
+    "lldb.displayFormat": "auto",
+    "lldb.showDisassembly": "always",
+    "lldb.dereferencePointers": true,
+    "lldb.consoleMode": "commands"
+}
\ No newline at end of file
diff --git a/packages/sciter/build.zig b/packages/sciter/build.zig
index 3228fc7..645f559 100644
--- a/packages/sciter/build.zig
+++ b/packages/sciter/build.zig
@@ -26,6 +26,7 @@ pub fn build(b: *std.Build) void {
         },
     });
     const optimize = b.standardOptimizeOption(.{});
+    const llvm = b.option(bool, "llvm", "Use LLVM and LLD") orelse false;
 
     const exe_mod = b.createModule(.{
         .root_source_file = b.path("src/main.zig"),
@@ -36,6 +37,8 @@ pub fn build(b: *std.Build) void {
     const exe = b.addExecutable(.{
         .name = "sciter",
         .root_module = exe_mod,
+        .use_llvm = llvm,
+        .use_lld = llvm,
     });
 
     b.installArtifact(exe);
diff --git a/packages/sciter/src/main.zig b/packages/sciter/src/main.zig
index 4439f87..ff5bc30 100644
--- a/packages/sciter/src/main.zig
+++ b/packages/sciter/src/main.zig
@@ -186,8 +186,11 @@ pub fn main() void {
     _ = display.mapWindow(window);
     defer _ = display.unmapWindow(window);
 
+    //var rect: sciter.Rect = .{ .left = -1, .right = -1, .top = -1, .bottom = -1 };
+    //const window2 = sciter_api.SciterCreateWindow(0, &rect, null, null, .null_handle);
+
     _ = sciter_api.SciterSetOption(.null_handle, 10, 1);
-    sciter_api.SciterSetupDebugOutput(window, null, &sciterDebugOutputProc);
+    sciter_api.SciterSetupDebugOutput(.null_handle, null, &sciterDebugOutputProc);
     _ = sciter_api.SciterLoadHtml(window, html, html.len, L("/"));
 
     var running = true;
diff --git a/packages/sciter/src/sciter.zig b/packages/sciter/src/sciter.zig
index c6b3d5c..f0176ae 100644
--- a/packages/sciter/src/sciter.zig
+++ b/packages/sciter/src/sciter.zig
@@ -236,7 +236,7 @@ pub const Rect = extern struct {
     left: i32,
     top: i32,
     right: i32,
-    bottom: u32,
+    bottom: i32,
 };
 
 pub const RequestParam = extern struct {
@@ -453,7 +453,7 @@ pub const API = extern struct {
     SciterSetHomeURL: *const fn (hwnd: HWindow, baseUrl: CWStr) callconv(.c) Bool,
     SciterCreateNSView: *anyopaque,
     SciterCreateWidget: *anyopaque,
-    SciterCreateWindow: *const fn (creationFlags: u32, frame: *Rect, delegate: *const WindowDelegate, delegateParam: ?*anyopaque, parent: HWindow) callconv(.c) HWindow,
+    SciterCreateWindow: *const fn (creationFlags: u32, frame: *Rect, _: ?*anyopaque, _: ?*anyopaque, parent: HWindowOptional) callconv(.c) HWindow,
 
     SciterSetupDebugOutput: *const fn (hwndOrNull: HWindowOptional, param: ?*anyopaque, pfOutput: ?*const DebugOutputProc) callconv(.c) void,