Index: reactos/win32ss/user/user32/CMakeLists.txt
===================================================================
--- reactos/win32ss/user/user32/CMakeLists.txt	(revision 72204)
+++ reactos/win32ss/user/user32/CMakeLists.txt	(working copy)
@@ -78,6 +78,6 @@
 endif()
 
 add_delay_importlibs(user32 imm32 usp10)
-add_importlibs(user32 gdi32 advapi32 kernel32 ntdll)
+add_importlibs(user32 gdi32 advapi32 kernel32 ntdll msimg32)
 add_pch(user32 include/user32.h SOURCE)
 add_cd_file(TARGET user32 DESTINATION reactos/system32 FOR all)
Index: reactos/win32ss/user/user32/controls/static.c
===================================================================
--- reactos/win32ss/user/user32/controls/static.c	(revision 72204)
+++ reactos/win32ss/user/user32/controls/static.c	(working copy)
@@ -62,7 +62,8 @@
 #define HFONT_GWL_OFFSET    0
 #define HICON_GWL_OFFSET    (sizeof(HFONT))
 #define UISTATE_GWL_OFFSET (HICON_GWL_OFFSET+sizeof(HICON)) // ReactOS: keep in sync with STATIC_UISTATE_GWL_OFFSET
-#define STATIC_EXTRA_BYTES  (UISTATE_GWL_OFFSET + sizeof(LONG))
+#define HBITMAPPM_GWL_OFFSET (UISTATE_GWL_OFFSET + sizeof(LONG))
+#define STATIC_EXTRA_BYTES  (HBITMAPPM_GWL_OFFSET + sizeof(HBITMAP))
 
 typedef void (*pfPaint)( HWND hwnd, HDC hdc, DWORD style );
 
@@ -159,7 +160,40 @@
     if (hBitmap && !(style & SS_CENTERIMAGE) && !(style & SS_REALSIZECONTROL))
     {
         BITMAP bm;
+        HBITMAP hbmPM;
         GetObjectW(hBitmap, sizeof(bm), &bm);
+
+        /* delete the previous premultiplied bitmap */
+        hbmPM = (HBITMAP)GetWindowLongPtrW(hwnd, HBITMAPPM_GWL_OFFSET);
+        if (hbmPM)
+        {
+            DeleteObject(hbmPM);
+            SetWindowLongPtrW(hwnd, HBITMAPPM_GWL_OFFSET, 0);
+        }
+
+        if (bm.bmBitsPixel == 32)
+        {
+            /* create a premultiplied bitmap */
+            hbmPM = CopyImage(hBitmap, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
+            if (hbmPM)
+            {
+                DWORD cdw;
+                BYTE *pb;
+                BITMAP bmPM;
+                GetObject(hbmPM, sizeof(BITMAP), &bmPM);
+                cdw = bm.bmWidth * bm.bmHeight;
+                pb = (BYTE *)bmPM.bmBits;
+                while (cdw-- > 0)
+                {
+                    pb[0] = (BYTE)(pb[0] * pb[3] / 256);
+                    pb[1] = (BYTE)(pb[1] * pb[3] / 256);
+                    pb[2] = (BYTE)(pb[2] * pb[3] / 256);
+                    pb += 4;
+                }
+                SetWindowLongPtrW(hwnd, HBITMAPPM_GWL_OFFSET, (LONG_PTR)hbmPM);
+            }
+        }
+
         /* Windows currently doesn't implement SS_RIGHTJUST */
         /*
         if ((style & SS_RIGHTJUST) != 0)
@@ -391,9 +425,20 @@
         break;
 
     case WM_NCDESTROY:
+        /* delete the premultiplied bitmap if any */
+        {
+            HBITMAP hbmPM;
+            hbmPM = (HBITMAP)GetWindowLongPtrW(hwnd, HBITMAPPM_GWL_OFFSET);
+            if (hbmPM)
+            {
+                DeleteObject(hbmPM);
+            }
+        }
+
 #ifdef __REACTOS__
         NtUserSetWindowFNID(hwnd, FNID_DESTROY);
 #endif
+
         if (style == SS_ICON) {
 /*
  * FIXME
@@ -810,12 +855,15 @@
 static void STATIC_PaintBitmapfn(HWND hwnd, HDC hdc, DWORD style )
 {
     HDC hMemDC;
-    HBITMAP hBitmap, oldbitmap;
+    HBITMAP hBitmap, oldbitmap, hbmPM;
     HBRUSH hbrush;
 
     /* message is still sent, even if the returned brush is not used */
     hbrush = STATIC_SendWmCtlColorStatic(hwnd, hdc);
 
+    /* premultiplied bitmap */
+    hbmPM = (HBITMAP)GetWindowLongPtrW(hwnd, HBITMAPPM_GWL_OFFSET);
+
     if ((hBitmap = (HBITMAP)GetWindowLongPtrW( hwnd, HICON_GWL_OFFSET ))
          && (GetObjectType(hBitmap) == OBJ_BITMAP)
          && (hMemDC = CreateCompatibleDC( hdc )))
@@ -825,7 +873,10 @@
         LOGBRUSH brush;
 
         GetObjectW(hBitmap, sizeof(bm), &bm);
-        oldbitmap = SelectObject(hMemDC, hBitmap);
+        if (hbmPM)
+            oldbitmap = SelectObject(hMemDC, hbmPM);
+        else
+            oldbitmap = SelectObject(hMemDC, hBitmap);
 
         /* Set the background color for monochrome bitmaps
            to the color of the background brush */
@@ -843,9 +894,23 @@
             rcClient.right = rcClient.left + bm.bmWidth;
             rcClient.bottom = rcClient.top + bm.bmHeight;
         }
-        StretchBlt(hdc, rcClient.left, rcClient.top, rcClient.right - rcClient.left,
-                   rcClient.bottom - rcClient.top, hMemDC,
-                   0, 0, bm.bmWidth, bm.bmHeight, SRCCOPY);
+        if (hbmPM)
+        {
+            BLENDFUNCTION bf;
+            bf.BlendOp = AC_SRC_OVER;
+            bf.BlendFlags = 0;
+            bf.SourceConstantAlpha = 255;
+            bf.AlphaFormat = AC_SRC_ALPHA;
+            AlphaBlend(hdc, rcClient.left, rcClient.top, rcClient.right - rcClient.left,
+                       rcClient.bottom - rcClient.top, hMemDC,
+                       0, 0, bm.bmWidth, bm.bmHeight, bf);
+        }
+        else
+        {
+            StretchBlt(hdc, rcClient.left, rcClient.top, rcClient.right - rcClient.left,
+                       rcClient.bottom - rcClient.top, hMemDC,
+                       0, 0, bm.bmWidth, bm.bmHeight, SRCCOPY);
+        }
         SelectObject(hMemDC, oldbitmap);
         DeleteDC(hMemDC);
     }