fix for pageup 'blind spot'

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6523 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/generic/scrolwin.cpp b/src/generic/scrolwin.cpp
index ada5b1c236d09daa983c6379ccc0974f75055ece..e217fe5adb7b1c00e279d764d0fe0d5fdb2ad3e8 100644 (file)
--- a/src/generic/scrolwin.cpp
+++ b/src/generic/scrolwin.cpp
@@ -662,7 +662,8 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
     {
         case WXK_PAGEUP:
         case WXK_PRIOR:
-            Scroll(-1, sty - (5 * cliy / 6));
+            int y = sty - (5 * cliy / 6);
+            Scroll(-1, (y == -1) ? 0 : newy);
             break;
 
         case WXK_PAGEDOWN: