diff --git a/lib/minifb/src/minifb.zig b/lib/minifb/src/minifb.zig
index e31f2ef..ef7ea3e 100644
--- a/lib/minifb/src/minifb.zig
+++ b/lib/minifb/src/minifb.zig
@@ -20,8 +20,18 @@ pub const Window = struct{
 
     pub const State = enum {ok, exit};
 
-    pub fn open(title: [*:0]const u8, width: u32, height: u32) !Window {
-        const cwin: ?*minifb_c.mfb_window = minifb_c.mfb_open(@as([*c]const u8, title), width, height);
+    pub const OpenFlags = packed struct {
+        resizable: bool = false,
+        fullscreen: bool = false,
+        fullscreenDesktop: bool = false,
+        borderless: bool = false,
+        alwaysOnTop: bool = false,
+    };
+
+    pub fn open(title: [*:0]const u8, width: u32, height: u32, flags: OpenFlags) !Window {
+        const intFlags: u32 = @bitCast(u5, flags);
+        const cTitle = @as([*c]const u8, title);
+        const cwin: ?*minifb_c.mfb_window = minifb_c.mfb_open_ex(cTitle, width, height, intFlags);
         if (cwin) |value| {
             return Window {.cwin=value};
         } else {
diff --git a/src/main.zig b/src/main.zig
index 14b84a6..0d1a42a 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -41,6 +41,7 @@ const State = struct {
 
         buf.drawRectangle(.{.x=0,.y=0}, .{.x=Width, .y=Height}, grey(@floatToInt(u8, bgValue)));
         buf.drawRectangle(.{.x=Width/3, .y=Height/3}, .{.x=2*Width/3, .y=2*Height/3}, mfb.rgb(255,0,0));
+        buf.drawRectangle(.{.x=0,.y=0}, .{.x=10,.y=10}, mfb.rgb(0,0,255));
     }
 };
 
@@ -96,8 +97,7 @@ pub fn main() !void {
     var gp_allocator = std.heap.GeneralPurposeAllocator(.{}){};
     const alloc = &gp_allocator.allocator;
 
-    std.log.info("All your codebase are belong to us.", .{});
-    var win = mfb.Window.open("Hello minifb-zig", Width, Height) catch unreachable;
+    var win = mfb.Window.open("Hello minifb-zig", Width, Height, .{.resizable=true}) catch unreachable;
     mfb.setTargetFPS(7);
 
     var state = try State.init(3);