Use smart pointers for graphics device classes

core/fxge/win32/fx_win32_device.cpp

Index: core/fxge/win32/fx_win32_device.cpp
diff --git a/core/fxge/win32/fx_win32_device.cpp b/core/fxge/win32/fx_win32_device.cpp
index 0b08bba8df679b2112e0593e98e114cae341e964..25ac1424de3157245fff807543de2722cd4ede35 100644
--- a/core/fxge/win32/fx_win32_device.cpp
+++ b/core/fxge/win32/fx_win32_device.cpp
@@ -1253,7 +1253,7 @@ FX_BOOL CGdiDisplayDriver::SetDIBits(const CFX_DIBSource* pSource,
     return SetDIBits(&bitmap, 0, &src_rect, left, top, FXDIB_BLEND_NORMAL);
   }
   CFX_DIBExtractor temp(pSource);
-  CFX_DIBitmap* pBitmap = temp;
+  CFX_DIBitmap* pBitmap = temp.GetBitmap();
   if (!pBitmap)
     return FALSE;
   return GDI_SetDIBits(pBitmap, pSrcRect, left, top);
@@ -1335,7 +1335,7 @@ FX_BOOL CGdiDisplayDriver::StretchDIBits(const CFX_DIBSource* pSource,
         (CWin32Platform*)CFX_GEModule::Get()->GetPlatformData();
     if (pPlatform->m_GdiplusExt.IsAvailable() && !pSource->IsCmykImage()) {
       CFX_DIBExtractor temp(pSource);
-      CFX_DIBitmap* pBitmap = temp;
+      CFX_DIBitmap* pBitmap = temp.GetBitmap();
       if (!pBitmap)
         return FALSE;
       return pPlatform->m_GdiplusExt.StretchDIBits(
@@ -1346,7 +1346,7 @@ FX_BOOL CGdiDisplayDriver::StretchDIBits(const CFX_DIBSource* pSource,
                                  dest_width, dest_height, pClipRect, flags);
   }
   CFX_DIBExtractor temp(pSource);
-  CFX_DIBitmap* pBitmap = temp;
+  CFX_DIBitmap* pBitmap = temp.GetBitmap();
   if (!pBitmap)
     return FALSE;
   return GDI_StretchDIBits(pBitmap, dest_left, dest_top, dest_width,