[Mwinapi-commits] SF.net SVN: mwinapi:[130] trunk/ManagedWinapi/Windows/SystemWindow.cs

[<zi...@us...>]

Revision: 130
          http://sourceforge.net/p/mwinapi/code/130
Author:   ziewer
Date:     2015-07-07 15:14:52 +0000 (Tue, 07 Jul 2015)
Log Message:
-----------
improved SystemWindow.TopMost setter: do not activate window when (un)setting topMost state

Modified Paths:
--------------
    trunk/ManagedWinapi/Windows/SystemWindow.cs

Modified: trunk/ManagedWinapi/Windows/SystemWindow.cs
===================================================================
--- trunk/ManagedWinapi/Windows/SystemWindow.cs	2015-02-04 20:28:10 UTC (rev 129)
+++ trunk/ManagedWinapi/Windows/SystemWindow.cs	2015-07-07 15:14:52 UTC (rev 130)
@@ -572,11 +572,11 @@
             {
                 if (value)
                 {
-                    SetWindowPos(_hwnd, new IntPtr(-1), 0, 0, 0, 0, 3);
+                    SetWindowPos(_hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
                 }
                 else
                 {
-                    SetWindowPos(_hwnd, new IntPtr(-2), 0, 0, 0, 0, 3);
+                    SetWindowPos(_hwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
                 }
             }
         }
@@ -1390,6 +1390,21 @@
         private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X,
            int Y, int cx, int cy, uint uFlags);
 
+        // special values for hWndInsertAfter
+        static readonly IntPtr HWND_BOTTOM = new IntPtr(1);
+        static readonly IntPtr HWND_TOP = new IntPtr(0);
+        static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
+        static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);
+
+        // window sizing and positioning flags
+        const uint SWP_NOSIZE = 0x0001;
+        const uint SWP_NOMOVE = 0x0002;
+        const uint SWP_NOACTIVATE = 0x0010;
+        const uint SWP_DRAWFRAME = 0x0020;
+        const uint SWP_SHOWWINDOW = 0x0040;
+        const uint SWP_NOOWNERZORDER = 0x0200;
+        const uint SWP_ASYNCWINDOWPOS = 0x4000;
+
         [DllImport("user32.dll")]
         private static extern IntPtr GetWindow(IntPtr hWnd, uint uCmd);
 

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