Improvements for building minimal builds and new ports: wxUSE_* usage and minor cleaning.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39633 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/scrarrow.cpp

@@ -45,7 +45,9 @@ struct wxScrollArrowCaptureData
         m_arrowPressed = wxScrollArrows::Arrow_None;
         m_window = NULL;
         m_btnCapture = -1;
+#if wxUSE_TIMER
         m_timerScroll = NULL;
+#endif // wxUSE_TIMER
     }
 
     ~wxScrollArrowCaptureData()
@@ -53,7 +55,9 @@ struct wxScrollArrowCaptureData
         if ( m_window )
             m_window->ReleaseMouse();
 
+#if wxUSE_TIMER
         delete m_timerScroll;
+#endif // wxUSE_TIMER
     }
 
     // the arrow being held pressed (may be Arrow_None)
@@ -65,14 +69,18 @@ struct wxScrollArrowCaptureData
     // the window which has captured the mouse
     wxWindow *m_window;
 
+#if wxUSE_TIMER
     // the timer for generating the scroll events
     wxScrollTimer *m_timerScroll;
+#endif
 };
 
 // ----------------------------------------------------------------------------
 // wxScrollArrowTimer: a wxScrollTimer which calls OnArrow()
 // ----------------------------------------------------------------------------
 
+#if wxUSE_TIMER
+
 class wxScrollArrowTimer : public wxScrollTimer
 {
 public:
@@ -95,6 +103,8 @@ protected:
     wxScrollArrows::Arrow m_arrow;
 };
 
+#endif // wxUSE_TIMER
+
 // ============================================================================
 // implementation of wxScrollArrows
 // ============================================================================
@@ -166,6 +176,7 @@ bool wxScrollArrows::HandleMouseMove(const wxMouseEvent& event) const
         arrow = m_control->HitTest(event.GetPosition());
     }
 
+#if wxUSE_TIMER
     if ( m_captureData && m_captureData->m_timerScroll)
     {
         // the mouse is captured, we may want to pause scrolling if it goes
@@ -199,6 +210,7 @@ bool wxScrollArrows::HandleMouseMove(const wxMouseEvent& event) const
 
         return false;
     }
+#endif // wxUSE_TIMER
 
     // reset the wxCONTROL_CURRENT flag for the arrows which don't have the
     // mouse and set it for the one which has
@@ -242,22 +254,28 @@ bool wxScrollArrows::HandleMouse(const wxMouseEvent& event) const
             m_captureData->m_window = m_control->GetWindow();
             m_captureData->m_window->CaptureMouse();
 
-            // start scrolling                       
+#if wxUSE_TIMER
+            // start scrolling
             wxScrollArrowTimer *tmpTimerScroll =
                 new wxScrollArrowTimer(m_control, arrow);
+#endif // wxUSE_TIMER
 
-            // Because in some cases wxScrollArrowTimer can cause 
-            // m_captureData to be destructed we need to test if it 
+            // Because in some cases wxScrollArrowTimer can cause
+            // m_captureData to be destructed we need to test if it
             // is still valid before using.
             if (m_captureData)
             {
+#if wxUSE_TIMER
                 m_captureData->m_timerScroll = tmpTimerScroll;
+#endif // wxUSE_TIMER
 
                 m_control->SetArrowFlag(arrow, wxCONTROL_PRESSED, true);
             }
             else
             {
+#if wxUSE_TIMER
                 delete tmpTimerScroll;
+#endif // wxUSE_TIMER
             }
         }
         //else: mouse already captured, nothing to do