wip 2

QuickLook/Controls/MainWindowBase.cs

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+// Copyright © 2017 Paddy Xu
+// 
+// This file is part of QuickLook program.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System;
+using System.Windows;
+using System.Windows.Interop;
+using QuickLook.Helpers;
+
+namespace QuickLook.Controls
+{
+    public class MainWindowBase : Window
+    {
+        public MainWindowBase()
+        {
+            WindowStyle = WindowStyle.None;
+            AllowsTransparency = true;
+
+            SourceInitialized += SourceInitializedHandler;
+        }
+
+        private void SourceInitializedHandler(object sender, EventArgs e)
+        {
+            var handle = new WindowInteropHelper(this).Handle;
+            var handleSource = HwndSource.FromHwnd(handle);
+            handleSource?.AddHook(WindowProc);
+        }
+
+        private static IntPtr WindowProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
+        {
+            switch (msg)
+            {
+                case 0x0024: /* WM_GETMINMAXINFO */
+                    WindowHelper.WmGetMinMaxInfo(hwnd, lParam);
+                    //handled = true;
+                    break;
+            }
+
+            return (IntPtr) 0;
+        }
+    }
+}