Don't send wxEVT_COMMAND_TREE_ITEM_MENU event without valid item in wxMSW.

The generic wxTreeCtrl version only sends this event when the mouse is right
clicked on a valid item so do the same in wxMSW version too for consistency.

This is also consistent with wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK event and
avoids strange problems with unexpected wxEVT_COMMAND_TREE_ITEM_MENU events
generated on right double click.

Finally, replace the checks for item validity in the event handler in the
sample with asserts which should loudly complain if it happens to be invalid.

Closes #11226.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65903 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/samples/treectrl/treetest.cpp b/samples/treectrl/treetest.cpp
index fa35d9f6395b7551416df1c419236a44859f4186..f22c46718952d0c12da28f902c3423839fa82ee9 100644 (file)
--- a/samples/treectrl/treetest.cpp
+++ b/samples/treectrl/treetest.cpp
@@ -1571,13 +1571,14 @@ void MyTreeCtrl::OnItemStateClick(wxTreeEvent& event)
 void MyTreeCtrl::OnItemMenu(wxTreeEvent& event)
 {
     wxTreeItemId itemId = event.GetItem();
-    MyTreeItemData *item = itemId.IsOk() ? (MyTreeItemData *)GetItemData(itemId)
-                                         : NULL;
+    wxCHECK_RET( itemId.IsOk(), "should have a valid item" );
+
+    MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
     wxPoint clientpt = event.GetPoint();
     wxPoint screenpt = ClientToScreen(clientpt);
 
     wxLogMessage(wxT("OnItemMenu for item \"%s\" at screen coords (%i, %i)"),
-                 item ? item->GetDesc() : wxT(""), screenpt.x, screenpt.y);
+                 item->GetDesc(), screenpt.x, screenpt.y);
 
     ShowMenu(itemId, clientpt);
     event.Skip();
@@ -1618,11 +1619,11 @@ void MyTreeCtrl::ShowMenu(wxTreeItemId id, const wxPoint& pt)
 void MyTreeCtrl::OnItemRClick(wxTreeEvent& event)
 {
     wxTreeItemId itemId = event.GetItem();
-    MyTreeItemData *item = itemId.IsOk() ? (MyTreeItemData *)GetItemData(itemId)
-                                         : NULL;
+    wxCHECK_RET( itemId.IsOk(), "should have a valid item" );
+
+    MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
 
-    wxLogMessage(wxT("Item \"%s\" right clicked"), item ? item->GetDesc()
-                                                        : wxT(""));
+    wxLogMessage(wxT("Item \"%s\" right clicked"), item->GetDesc());
 
     event.Skip();
 }

diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp
index b0de8d30c98329ec325c2a7219940d4158dc12b8..971470d4423ec70d059c3882f4454e4b900fac44 100644 (file)
--- a/src/msw/treectrl.cpp
+++ b/src/msw/treectrl.cpp
@@ -2727,13 +2727,16 @@ wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
         }
 
         // create the event
-        wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_MENU, this, item);
+        if ( item.IsOk() )
+        {
+            wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_MENU, this, item);
 
-        event.m_pointDrag = pt;
+            event.m_pointDrag = pt;
 
-        if ( HandleTreeEvent(event) )
-            processed = true;
-        //else: continue with generating wxEVT_CONTEXT_MENU in base class code
+            if ( HandleTreeEvent(event) )
+                processed = true;
+            //else: continue with generating wxEVT_CONTEXT_MENU in base class code
+        }
     }
     else if ( (nMsg >= WM_MOUSEFIRST) && (nMsg <= WM_MOUSELAST) )
     {