X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9923c37dccb4e5dbe6387ceb3ab0a8202fadc231..1012c2ceb610f2ee9339bb95193596038ea5c443:/src/os2/slider.cpp

diff --git a/src/os2/slider.cpp b/src/os2/slider.cpp
index 7662c87bfb..db9beff768 100644
--- a/src/os2/slider.cpp
+++ b/src/os2/slider.cpp
@@ -862,8 +862,10 @@ void wxSlider::GetSize(
         wxFindMaxSize( m_hStaticValue
                       ,&vRect
                      );
-    *pnWidth  = vRect.xRight - vRect.xLeft;
-    *pnHeight = vRect.yBottom - vRect.yTop;
+    if (pnWidth)
+        *pnWidth  = vRect.xRight - vRect.xLeft;
+    if (pnHeight)
+        *pnHeight = vRect.yTop - vRect.yBottom;
 } // end of wxSlider::GetSize
 
 int wxSlider::GetThumbLength() const