check that we use bitmaps of correct size in the image list

[wxWidgets.git] / src / univ / scrarrow.cpp

diff --git a/src/univ/scrarrow.cpp b/src/univ/scrarrow.cpp
index 3bcf176b16977ddd3f2eec5f4f31d7925024e688..48d669cf0d928bbbc197f50712b3a9b7e8b970d7 100644 (file)
--- a/src/univ/scrarrow.cpp
+++ b/src/univ/scrarrow.cpp
@@ -134,17 +134,18 @@ void wxScrollArrows::DrawArrow(Arrow arrow,
         { wxUP,   wxDOWN  }
     };
 
-    void (wxRenderer::*pfn)(wxDC&, wxDirection, const wxRect&, int) =
-        scrollbarLike ? &wxRenderer::DrawScrollbarArrow
-                      : &wxRenderer::DrawArrow;
-
-    (m_control->GetRenderer()->*pfn)
-    (
-        dc,
-        arrowDirs[m_control->IsVertical()][arrow],
-        rect,
-        m_control->GetArrowState(arrow)
-    );
+    if ( scrollbarLike )
+        m_control->GetRenderer()->DrawScrollbarArrow(
+            dc,
+            arrowDirs[m_control->IsVertical()][arrow],
+            rect,
+            m_control->GetArrowState(arrow));
+    else
+        m_control->GetRenderer()->DrawArrow(
+            dc,
+            arrowDirs[m_control->IsVertical()][arrow],
+            rect,
+            m_control->GetArrowState(arrow));
 }
 
 // ----------------------------------------------------------------------------
@@ -169,7 +170,7 @@ bool wxScrollArrows::HandleMouseMove(const wxMouseEvent& event) const
         arrow = m_control->HitTest(event.GetPosition());
     }
 
-    if ( m_captureData )
+    if ( m_captureData && m_captureData->m_timerScroll)
     {
         // the mouse is captured, we may want to pause scrolling if it goes
         // outside the arrow or to resume it if we had paused it before
@@ -245,11 +246,23 @@ bool wxScrollArrows::HandleMouse(const wxMouseEvent& event) const
             m_captureData->m_window = m_control->GetWindow();
             m_captureData->m_window->CaptureMouse();
 
-            // start scrolling
-            m_captureData->m_timerScroll =
+            // start scrolling                       
+            wxScrollArrowTimer *tmpTimerScroll =
                 new wxScrollArrowTimer(m_control, arrow);
 
-            m_control->SetArrowFlag(arrow, wxCONTROL_PRESSED, TRUE);
+            // 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)
+            {
+                m_captureData->m_timerScroll = tmpTimerScroll;
+
+                m_control->SetArrowFlag(arrow, wxCONTROL_PRESSED, TRUE);
+            }
+            else
+            {
+                delete tmpTimerScroll;
+            }
         }
         //else: mouse already captured, nothing to do
     }