Fixed invisible CHM tooltip text bug when window text colour is black.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@58145 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -143,6 +143,7 @@ wxMSW:
 - Correct coordinates of wxDropFilesEvent (Dmitriy Maksimov).
 - Fix handling of abandoned mutexes in wxMutex (David Heffernan).
 - Avoid warnings about deprecated localtime with MSVC8/9 (Chris Stankevitz).
+- Fixed invisible CHM tooltip text bug when window text colour is black.
 
 wxMSW/CE:
 

src/msw/helpchm.cpp

@@ -165,8 +165,8 @@ bool wxCHMHelpController::DisplayContextPopup(int contextId)
     popup.idString = contextId ;
 
     GetCursorPos(& popup.pt);
-    popup.clrForeground = (COLORREF)-1;
-    popup.clrBackground = (COLORREF)-1;
+    popup.clrForeground = ::GetSysColor(COLOR_INFOTEXT);
+    popup.clrBackground = ::GetSysColor(COLOR_INFOBK);;
     popup.rcMargins.top = popup.rcMargins.left = popup.rcMargins.right = popup.rcMargins.bottom = -1;
     popup.pszFont = NULL;
     popup.pszText = NULL;