From f73f67bee47491d3cd61cecff323074e328c5a1e Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sat, 6 Apr 2002 22:31:07 +0000
Subject: [PATCH] refresh the dialogs after resize - this is the only way to
 deal  with the display corruption problem

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14977 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/msw/dialog.cpp | 44 +++++++++++++++-----------------------------
 1 file changed, 15 insertions(+), 29 deletions(-)

diff --git a/src/msw/dialog.cpp b/src/msw/dialog.cpp
index d528829c9d..7fe3bd5c0f 100644
--- a/src/msw/dialog.cpp
+++ b/src/msw/dialog.cpp
@@ -405,41 +405,27 @@ long wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 
     switch ( message )
     {
-#if 0 // now that we got owner window right it doesn't seem to be needed
-        case WM_ACTIVATE:
-            switch ( LOWORD(wParam) )
-            {
-                case WA_ACTIVE:
-                case WA_CLICKACTIVE:
-                    if ( IsModalShowing() && GetParent() )
-                    {
-                        // bring the owner window to top as the standard dialog
-                        // boxes do
-                        if ( !::SetWindowPos
-                                (
-                                    GetHwndOf(GetParent()),
-                                    GetHwnd(),
-                                    0, 0,
-                                    0, 0,
-                                    SWP_NOACTIVATE |
-                                    SWP_NOMOVE |
-                                    SWP_NOSIZE
-                                ) )
-                        {
-                            wxLogLastError(wxT("SetWindowPos(SWP_NOACTIVATE)"));
-                        }
-                    }
-                    // fall through to process it normally as well
-            }
-            break;
-#endif // 0
-
         case WM_CLOSE:
             // if we can't close, tell the system that we processed the
             // message - otherwise it would close us
             processed = !Close();
             break;
 
+        case WM_SIZE:
+            // the Windows dialogs unfortunately are not meant to be resizeable
+            // at all and their standard class doesn't include CS_[VH]REDRAW
+            // styles which means that the window is not refreshed properly
+            // after the resize and no amount of WS_CLIPCHILDREN/SIBLINGS can
+            // help with it - so we have to refresh it manually which certainly
+            // creates flicker but at least doesn't show garbage on the screen
+            rc = wxWindow::MSWWindowProc(message, wParam, lParam);
+            processed = TRUE;
+            if ( !HasFlag(wxNO_FULL_REPAINT_ON_RESIZE) )
+            {
+                Refresh();
+            }
+            break;
+
 #ifndef __WXMICROWIN__
         case WM_SETCURSOR:
             // we want to override the busy cursor for modal dialogs:
-- 
2.45.2