restructure project for part 2

2024-01-27 10:55:53 +00:00
parent a322893166
commit 48925b89ff
96 changed files with 383 additions and 351 deletions
@@ -0,0 +1,61 @@
+using System.Runtime.InteropServices;
+using Windows.Win32;
+using Windows.Win32.Foundation;
+using Windows.Win32.Graphics.Gdi;
+using Windows.Win32.UI.WindowsAndMessaging;
+
+namespace Hyperbar.Interop.Windows;
+
+public static class HwndExtensions
+{
+    [Flags]
+    private enum WindowStyles
+    {
+        WS_EX_LAYERED = 0x80000
+    }
+
+    public static void SetExtendedWindowStyle(this IntPtr hwnd, ExtendedWindowStyle newStyle)
+    {
+        int windowLong = PInvoke.GetWindowLong(new(hwnd), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
+        if (PInvoke.SetWindowLong(new(hwnd), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE, (int)newStyle) != windowLong)
+        {
+            Marshal.ThrowExceptionForHR(Marshal.GetLastWin32Error());
+        }
+
+        PInvoke.SetWindowPos(new(hwnd), new HWND(0), 0, 0, 0, 0, SET_WINDOW_POS_FLAGS.SWP_DRAWFRAME |
+            SET_WINDOW_POS_FLAGS.SWP_NOMOVE |
+            SET_WINDOW_POS_FLAGS.SWP_NOOWNERZORDER |
+            SET_WINDOW_POS_FLAGS.SWP_NOSIZE |
+            SET_WINDOW_POS_FLAGS.SWP_NOZORDER);
+    }
+
+    public static uint GetDpiForWindow(IntPtr hwnd) => PInvoke.GetDpiForWindow(new HWND(hwnd));
+
+    public static void SetWindowOpacity(this IntPtr hWnd,
+        byte value)
+    {
+        HWND hWND = new(hWnd);
+        WindowStyles windowLong = (WindowStyles)PInvoke.GetWindowLong(hWND, WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
+        if (!windowLong.HasFlag(WindowStyles.WS_EX_LAYERED))
+        {
+            PInvoke.SetWindowLong(hWND, WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE, (int)(windowLong | WindowStyles.WS_EX_LAYERED));
+        }
+
+        if (!PInvoke.SetLayeredWindowAttributes(hWND, 0u, value, LAYERED_WINDOW_ATTRIBUTES_FLAGS.LWA_ALPHA))
+        {
+            Marshal.ThrowExceptionForHR(Marshal.GetLastWin32Error());
+        }
+    }
+
+    public static void SetWindowStyle(this IntPtr hwnd,
+        WindowStyle newStyle)
+    {
+        int windowLong = PInvoke.GetWindowLong(new HWND(hwnd), WINDOW_LONG_PTR_INDEX.GWL_STYLE);
+        if (PInvoke.SetWindowLong(new HWND(hwnd), WINDOW_LONG_PTR_INDEX.GWL_STYLE, (int)newStyle) != windowLong)
+        {
+            Marshal.ThrowExceptionForHR(Marshal.GetLastWin32Error());
+        }
+
+        PInvoke.SetWindowPos(new HWND(hwnd), new HWND(0), 0, 0, 0, 0, SET_WINDOW_POS_FLAGS.SWP_DRAWFRAME | SET_WINDOW_POS_FLAGS.SWP_NOMOVE | SET_WINDOW_POS_FLAGS.SWP_NOOWNERZORDER | SET_WINDOW_POS_FLAGS.SWP_NOSIZE | SET_WINDOW_POS_FLAGS.SWP_NOZORDER);
+    }
+}