Daniel Jelinski : comctl32/listview: Fix LVM_SETICONSPACING on 64bit machines.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 77874d7863dc92907452615823e8b038690ced5b
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=77874d7863dc92907452615823e8b038690ced5b

Author: Daniel Jelinski <djelinski1 at gmail.com>
Date:   Mon Feb  4 20:57:58 2013 +0100

comctl32/listview: Fix LVM_SETICONSPACING on 64bit machines.

---

 dlls/comctl32/listview.c       |    4 +++-
 dlls/comctl32/tests/listview.c |   21 ++++++++++++++++++---
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/dlls/comctl32/listview.c b/dlls/comctl32/listview.c
index 1274d15..a22b2da 100644
--- a/dlls/comctl32/listview.c
+++ b/dlls/comctl32/listview.c
@@ -11468,7 +11468,9 @@ LISTVIEW_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
     return LISTVIEW_SetHoverTime(infoPtr, (DWORD)lParam);
 
   case LVM_SETICONSPACING:
-    return LISTVIEW_SetIconSpacing(infoPtr, (short)LOWORD(lParam), (short)HIWORD(lParam));
+    if(lParam == -1)
+        return LISTVIEW_SetIconSpacing(infoPtr, -1, -1);
+    return LISTVIEW_SetIconSpacing(infoPtr, LOWORD(lParam), HIWORD(lParam));
 
   case LVM_SETIMAGELIST:
     return (LRESULT)LISTVIEW_SetImageList(infoPtr, (INT)wParam, (HIMAGELIST)lParam);
diff --git a/dlls/comctl32/tests/listview.c b/dlls/comctl32/tests/listview.c
index 98ca495..fef3f60 100644
--- a/dlls/comctl32/tests/listview.c
+++ b/dlls/comctl32/tests/listview.c
@@ -4654,11 +4654,26 @@ static void test_getitemspacing(void)
 
     ret = SendMessage(hwnd, LVM_GETITEMSPACING, FALSE, 0);
     expect(100, LOWORD(ret));
-    expect(0xFFFF, HIWORD(ret));
 
-    ret = SendMessage(hwnd, LVM_SETICONSPACING, 0, -1);
-    expect(100, LOWORD(ret));
     expect(0xFFFF, HIWORD(ret));
+
+    if (sizeof(void*) == 8)
+    {
+        /* NOTE: -1 is not treated the same as (DWORD)-1 by 64bit listview */
+        ret = SendMessage(hwnd, LVM_SETICONSPACING, 0, (DWORD)-1);
+        expect(100, LOWORD(ret));
+        expect(0xFFFF, HIWORD(ret));
+
+        ret = SendMessage(hwnd, LVM_SETICONSPACING, 0, -1);
+        expect(0xFFFF, LOWORD(ret));
+        expect(0xFFFF, HIWORD(ret));
+    }
+    else
+    {
+        ret = SendMessage(hwnd, LVM_SETICONSPACING, 0, -1);
+        expect(100, LOWORD(ret));
+        expect(0xFFFF, HIWORD(ret));
+    }
     ret = SendMessage(hwnd, LVM_GETITEMSPACING, FALSE, 0);
     /* spacing + icon size returned */
     expect(cx + 40, LOWORD(ret));