Check-in Source

Signed-off-by: mharb <mharb@noreply.localhost>

px-tcp1/ProtosXExercise/WindowUtility.cs

@@ -0,0 +1,77 @@
+using System.Runtime.InteropServices;
+using static System.Console;
+
+namespace ProtosXdigitalDemo
+{
+    static class WindowUtility
+    {
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
+        const uint SWP_NOSIZE = 0x0001;
+        const uint SWP_NOZORDER = 0x0004;
+        private static Size GetScreenSize() => new Size(GetSystemMetrics(0), GetSystemMetrics(1));
+        private struct Size
+        {
+            public int Width { get; set; }
+            public int Height { get; set; }
+
+            public Size(int width, int height)
+            {
+                Width = width;
+                Height = height;
+            }
+        }
+        [DllImport("kernel32.dll", ExactSpelling = true)]
+        private static extern IntPtr GetConsoleWindow();
+        [DllImport("User32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
+        private static extern int GetSystemMetrics(int nIndex);
+        [DllImport("user32.dll")]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        private static extern bool GetWindowRect(HandleRef hWnd, out Rect lpRect);
+        [StructLayout(LayoutKind.Sequential)]
+        private struct Rect
+        {
+            public int Left;        // x position of upper-left corner
+            public int Top;         // y position of upper-left corner
+            public int Right;       // x position of lower-right corner
+            public int Bottom;      // y position of lower-right corner
+        }
+
+        private static Size GetWindowSize(IntPtr window)
+        {
+            if (!GetWindowRect(new HandleRef(null, window), out Rect rect))
+                throw new Exception("Unable to get window rect!");
+
+            int width = rect.Right - rect.Left;
+            int height = rect.Bottom - rect.Top;
+
+            return new Size(width, height);
+        }
+
+        public static void MoveWindowToCenter()
+        {
+            IntPtr window = GetConsoleWindow();
+            if (window == IntPtr.Zero)
+                throw new Exception("Couldn't find a window to center!");
+
+            Size screenSize = GetScreenSize();
+            Size windowSize = GetWindowSize(window);
+
+            int x = (screenSize.Width - windowSize.Width) / 2;
+            int y = (screenSize.Height - windowSize.Height) / 2;
+
+            SetWindowPos(window, IntPtr.Zero, x, y, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
+        }
+
+        public static void SetAppearanceOptions()
+        {
+            if (!IsOutputRedirected)                                 // set console window size
+            {
+                BufferWidth = 150;
+                SetWindowSize(BufferWidth, 50);
+            }
+        }
+    }
+}