X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/05a7f61d901a8abe54a563772ccf072d1d9284bf..90b22acaa8a8673e9a6749aa5e5322d2c8913a85:/src/generic/treectlg.cpp?ds=sidebyside

diff --git a/src/generic/treectlg.cpp b/src/generic/treectlg.cpp
index cb0a92a615..e3f8fda4a2 100644
--- a/src/generic/treectlg.cpp
+++ b/src/generic/treectlg.cpp
@@ -1557,7 +1557,7 @@ void wxGenericTreeCtrl::ScrollTo(const wxTreeItemId &item)
     // We have to call this here because the label in
     // question might just have been added and no screen
     // update taken place.
-    if (m_dirty) wxYield();
+    if (m_dirty) wxYieldIfNeeded();
 
     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
 
@@ -2203,7 +2203,7 @@ wxTreeItemId wxGenericTreeCtrl::HitTest(const wxPoint& point, int& flags)
     // We have to call this here because the label in
     // question might just have been added and no screen
     // update taken place.
-    if (m_dirty) wxYield();
+    if (m_dirty) wxYieldIfNeeded();
 
     wxClientDC dc(this);
     PrepareDC(dc);
@@ -2218,7 +2218,10 @@ wxTreeItemId wxGenericTreeCtrl::HitTest(const wxPoint& point, int& flags)
     if (point.y<0) flags|=wxTREE_HITTEST_ABOVE;
     if (point.y>h) flags|=wxTREE_HITTEST_BELOW;
 
-    return m_anchor->HitTest( wxPoint(x, y), this, flags);
+    if (m_anchor)
+        return m_anchor->HitTest( wxPoint(x, y), this, flags);
+    else
+        return wxTreeItemId();
 }
 
 // get the bounding rectangle of the item (or of its label only)
@@ -2260,7 +2263,7 @@ void wxGenericTreeCtrl::Edit( const wxTreeItemId& item )
     // We have to call this here because the label in
     // question might just have been added and no screen
     // update taken place.
-    if (m_dirty) wxYield();
+    if (m_dirty) wxYieldIfNeeded();
 
     wxString s = m_currentEdit->GetText();
     int x = m_currentEdit->GetX();
@@ -2403,7 +2406,7 @@ void wxGenericTreeCtrl::OnMouse( wxMouseEvent &event )
             // highlight the current drop target if any
             DrawDropEffect(m_dropTarget);
 
-            wxYield();
+            wxYieldIfNeeded();
         }
     }
     else if ( (event.LeftUp() || event.RightUp()) && m_isDragging )
@@ -2434,7 +2437,7 @@ void wxGenericTreeCtrl::OnMouse( wxMouseEvent &event )
 
         SetCursor(m_oldCursor);
 
-        wxYield();
+        wxYieldIfNeeded();
     }
     else
     {