Fabian Maurer : user32: Only send position-change messages when needed.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d594ba3322e1385f2ad94b7c58d3acef3f246c73
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=d594ba3322e1385f2ad94b7c58d3acef3f246c73

Author: Fabian Maurer <dark.shadow4 at web.de>
Date:   Mon Feb 13 16:58:30 2017 +0100

user32: Only send position-change messages when needed.

Signed-off-by: Fabian Maurer <dark.shadow4 at web.de>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/user32/tests/msg.c | 18 +++++++++---------
 dlls/user32/winpos.c    |  6 ++++--
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/dlls/user32/tests/msg.c b/dlls/user32/tests/msg.c
index ea5980e..13bc038 100644
--- a/dlls/user32/tests/msg.c
+++ b/dlls/user32/tests/msg.c
@@ -5164,31 +5164,31 @@ static void test_messages(void)
     test_msg_setpos(WmFirstDrawSetWindowPosSeq1, SWP_SHOWWINDOW, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq2, 0, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq3,
-            SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE | SWP_NOCLIENTSIZE | SWP_NOCLIENTMOVE | SWP_NOZORDER, TRUE);
+            SWP_SHOWWINDOW | SWP_NOSIZE | SWP_NOMOVE | SWP_NOCLIENTSIZE | SWP_NOCLIENTMOVE | SWP_NOZORDER, FALSE);
 
     test_msg_setpos(WmFirstDrawSetWindowPosSeq1, SWP_SHOWWINDOW | SWP_NOSIZE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq4, SWP_SHOWWINDOW | SWP_NOMOVE, FALSE);
-    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOCLIENTSIZE, TRUE);
-    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOCLIENTMOVE, TRUE);
+    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOCLIENTSIZE, FALSE);
+    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOCLIENTMOVE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq1, SWP_SHOWWINDOW | SWP_NOZORDER, FALSE);
 
     test_msg_setpos(WmFirstDrawSetWindowPosSeq2, SWP_SHOWWINDOW | SWP_DEFERERASE, FALSE);
-    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_DEFERERASE | SWP_NOCLIENTMOVE, TRUE);
-    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_DEFERERASE | SWP_NOCLIENTSIZE, TRUE);
+    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_DEFERERASE | SWP_NOCLIENTMOVE, FALSE);
+    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_DEFERERASE | SWP_NOCLIENTSIZE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq5, SWP_SHOWWINDOW | SWP_DEFERERASE | SWP_NOMOVE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq2, SWP_SHOWWINDOW | SWP_DEFERERASE | SWP_NOSIZE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq2, SWP_SHOWWINDOW | SWP_DEFERERASE | SWP_NOZORDER, FALSE);
 
     test_msg_setpos(WmFirstDrawSetWindowPosSeq1, SWP_SHOWWINDOW | SWP_NOCOPYBITS, FALSE);
-    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOCOPYBITS | SWP_NOCLIENTMOVE, TRUE);
-    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOCOPYBITS | SWP_NOCLIENTSIZE, TRUE);
+    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOCOPYBITS | SWP_NOCLIENTMOVE, FALSE);
+    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOCOPYBITS | SWP_NOCLIENTSIZE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq4, SWP_SHOWWINDOW | SWP_NOCOPYBITS | SWP_NOMOVE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq1, SWP_SHOWWINDOW | SWP_NOCOPYBITS | SWP_NOSIZE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq1, SWP_SHOWWINDOW | SWP_NOCOPYBITS | SWP_NOZORDER, FALSE);
 
     test_msg_setpos(WmFirstDrawSetWindowPosSeq2, SWP_SHOWWINDOW | SWP_NOREDRAW, FALSE);
-    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOREDRAW | SWP_NOCLIENTMOVE, TRUE);
-    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOREDRAW | SWP_NOCLIENTSIZE, TRUE);
+    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOREDRAW | SWP_NOCLIENTMOVE, FALSE);
+    test_msg_setpos(WmFirstDrawSetWindowPosSeq3, SWP_SHOWWINDOW | SWP_NOREDRAW | SWP_NOCLIENTSIZE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq5, SWP_SHOWWINDOW | SWP_NOREDRAW | SWP_NOMOVE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq2, SWP_SHOWWINDOW | SWP_NOREDRAW | SWP_NOSIZE, FALSE);
     test_msg_setpos(WmFirstDrawSetWindowPosSeq2, SWP_SHOWWINDOW | SWP_NOREDRAW | SWP_NOZORDER, FALSE);
diff --git a/dlls/user32/winpos.c b/dlls/user32/winpos.c
index 6ed2d95..c2b35ec 100644
--- a/dlls/user32/winpos.c
+++ b/dlls/user32/winpos.c
@@ -1643,7 +1643,8 @@ static BOOL SWP_DoWinPosChanging( WINDOWPOS* pWinpos, RECT* pNewWindowRect, RECT
 
     /* Send WM_WINDOWPOSCHANGING message */
 
-    if (!(pWinpos->flags & SWP_NOSENDCHANGING))
+    if (!(pWinpos->flags & SWP_NOSENDCHANGING)
+           && !((pWinpos->flags & SWP_AGG_NOCLIENTCHANGE) && (pWinpos->flags & SWP_SHOWWINDOW)))
         SendMessageW( pWinpos->hwnd, WM_WINDOWPOSCHANGING, 0, (LPARAM)pWinpos );
 
     if (!(wndPtr = WIN_GetPtr( pWinpos->hwnd )) ||
@@ -2271,7 +2272,8 @@ BOOL USER_SetWindowPos( WINDOWPOS * winpos )
 
     TRACE("\tstatus flags = %04x\n", winpos->flags & SWP_AGG_STATUSFLAGS);
 
-    if (((winpos->flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOPOSCHANGE))
+    if (((winpos->flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOPOSCHANGE)
+            && !((orig_flags & SWP_AGG_NOCLIENTCHANGE) && (orig_flags & SWP_SHOWWINDOW)))
     {
         /* WM_WINDOWPOSCHANGED is sent even if SWP_NOSENDCHANGING is set
            and always contains final window position.