some wxUSE_* macros not used consistently (patch #992456) with source cleaning (blind changes).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@28975 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/slider.cpp

@@ -23,6 +23,8 @@
 #include <wx/scrolwin.h>
 #endif
 
+#if wxUSE_SLIDER
+
 #include "wx/slider.h"
 #include "wx/os2/private.h"
 
@@ -460,7 +462,7 @@ bool wxSlider::Create(
                       ,(PVOID)&lColor
                      );
     SetValue(nValue);
-    return TRUE;
+    return true;
 } // end of wxSlider::Create
 
 void wxSlider::DoSetSize(
@@ -941,7 +943,7 @@ bool wxSlider::OS2OnScroll(
             break;
 
         default:
-            return FALSE;
+            return false;
     }
 
     int                             nPixelRange = SHORT1FROMMR(::WinSendMsg( GetHwnd()
@@ -970,7 +972,7 @@ bool wxSlider::OS2OnScroll(
         //
         // Out of range - but we did process it
         //
-        return TRUE;
+        return true;
     }
     SetValue(nNewPos);
 
@@ -1168,6 +1170,7 @@ bool wxSlider::Show(
         ::WinShowWindow((HWND)m_hStaticMin, bShow);
     if(m_hStaticMax)
         ::WinShowWindow((HWND)m_hStaticMax, bShow);
-    return TRUE;
+    return true;
 } // end of wxSlider::Show
 
+#endif // wxUSE_SLIDER