[reactos] 01/03: [USER32] Fixed scrolling issue in Change Icon dialog. CORE-16163

[Jose Carlos Jesus]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=a4483d79dabf0806b8057…

commit a4483d79dabf0806b80579d476b1a29284e5fe96
Author:     Jose Carlos Jesus <zecarlos1957(a)hotmail.com>
AuthorDate: Mon Dec 16 00:49:49 2019 +0000
Commit:     Mark Jansen <mark.jansen(a)reactos.org>
CommitDate: Thu Apr 30 18:58:20 2020 +0200

    [USER32] Fixed scrolling issue in Change Icon dialog. CORE-16163
---
 win32ss/user/user32/controls/listbox.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/win32ss/user/user32/controls/listbox.c
b/win32ss/user/user32/controls/listbox.c
index 4e1b48a3a72..21d052bf4be 100644
--- a/win32ss/user/user32/controls/listbox.c
+++ b/win32ss/user/user32/controls/listbox.c
@@ -21,7 +21,7 @@
  *
  * This code was audited for completeness against the documented features
  * of Comctl32.dll version 6.0 on Oct. 9, 2004, by Dimitrie O. Paun.
- * 
+ *
  * Unless otherwise noted, we believe this code to be complete, as per
  * the specification mentioned above.
  * If you discover missing features, or bugs, please note them below.
@@ -321,9 +321,14 @@ static LRESULT LISTBOX_SetTopItem( LB_DESCR *descr, INT index, BOOL
scroll )
         }
         else
             diff = (descr->top_item - index) * descr->item_height;
-
-        ScrollWindowEx( descr->self, 0, diff, NULL, NULL, 0, NULL,
-                        SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
+#ifdef __REACTOS__
+        if (descr->style & LBS_MULTICOLUMN)
+            ScrollWindowEx(descr->self, diff, 0, NULL, NULL, 0, NULL,
+                           SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN);
+        else
+#endif
+            ScrollWindowEx(descr->self, 0, diff, NULL, NULL, 0, NULL,
+                           SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN);
     }
     else
         InvalidateRect( descr->self, NULL, TRUE );
@@ -512,7 +517,7 @@ static INT LISTBOX_GetItemFromPoint( const LB_DESCR *descr, INT x, INT
y )
  *
  * Paint an item.
  */
-static void LISTBOX_PaintItem( LB_DESCR *descr, HDC hdc, const RECT *rect, 
+static void LISTBOX_PaintItem( LB_DESCR *descr, HDC hdc, const RECT *rect,
 			       INT index, UINT action, BOOL ignoreFocus )
 {
     LB_ITEMDATA *item = NULL;
@@ -1070,7 +1075,7 @@ static LRESULT LISTBOX_Paint( LB_DESCR *descr, HDC hdc )
         /* keep the focus rect, to paint the focus item after */
         if (i == descr->focus_item)
             focusRect = rect;
-    
+
         LISTBOX_PaintItem( descr, hdc, &rect, i, ODA_DRAWENTIRE, TRUE );
         rect.top = rect.bottom;
 
@@ -2621,8 +2626,8 @@ LRESULT WINAPI ListBoxWndProc_common( HWND hwnd, UINT msg,
              return 0;
           }
        }
-    }    
-#endif    
+    }
+#endif
 
     if (!descr)
     {
@@ -3137,7 +3142,7 @@ LRESULT WINAPI ListBoxWndProc_common( HWND hwnd, UINT msg,
             LISTBOX_HandleMouseMove( descr, mousePos.x, mousePos.y);
 
             descr->captured = captured;
-        } 
+        }
         else if (GetCapture() == descr->self)
         {
             LISTBOX_HandleMouseMove( descr, (INT16)LOWORD(lParam),