#21 WindowFinder overhaul: Implemented the supposed Alt-Tab behavior.

FrigoCoder · Jan 4, 2018 · 72798fa · 72798fa
1 parent 991a0cc
commit 72798fa
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Showing 2 changed files with 25 additions and 5 deletions.
diff --git a/.hgignore → .gitignore b/.hgignore → .gitignore
@@ -1,6 +1,4 @@
-syntax:glob
 .*
 bin
 obj
 packages
-*.user
diff --git a/FrigoTab/WindowFinder.cs b/FrigoTab/WindowFinder.cs
@@ -40,15 +40,15 @@ private enum WindowType {
         private delegate bool EnumWindowsProc (IntPtr handle, IntPtr lParam);
 
         private static WindowType GetWindowType (WindowHandle handle) {
-            if( handle.GetClassName() == "SWT_Window0" && handle.GetWindowText() == "" ) {
-                return WindowType.Hidden;
-            }
             if( handle.GetWindowRect().IsEmpty ) {
                 return WindowType.Hidden;
             }
             if( Dwm.IsCloaked(handle) ) {
                 return WindowType.Hidden;
             }
+            if( !IsAltTabWindow(handle) ) {
+                return WindowType.Hidden;
+            }
 
             WindowStyles style = handle.GetWindowStyles();
             if( style.HasFlag(WindowStyles.Disabled) ) {
@@ -72,9 +72,31 @@ private static WindowType GetWindowType (WindowHandle handle) {
             return WindowType.AppWindow;
         }
 
+        private static bool IsAltTabWindow (IntPtr hwnd) {
+            IntPtr hwndWalk = IntPtr.Zero;
+            IntPtr hwndTry = GetAncestor(hwnd, 3);
+            while( hwndTry != hwndWalk ) {
+                hwndWalk = hwndTry;
+                hwndTry = GetLastActivePopup(hwndWalk);
+                if( IsWindowVisible(hwndTry) ) {
+                    break;
+                }
+            }
+            return hwndWalk == hwnd;
+        }
+
         [DllImport("user32.dll")]
         private static extern bool EnumWindows (EnumWindowsProc enumFunc, IntPtr lParam);
 
+        [DllImport("user32.dll")]
+        private static extern IntPtr GetAncestor (IntPtr hWnd, int gaFlags);
+
+        [DllImport("user32.dll")]
+        private static extern IntPtr GetLastActivePopup (IntPtr hWnd);
+
+        [DllImport("user32.dll")]
+        private static extern bool IsWindowVisible (IntPtr hWnd);
+
     }
 
 }