Optimize pixels rotation in wxImage::Rotate90().

[wxWidgets.git] / src / msw / listbox.cpp

diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp
index b8255628c84a7294c82516ae6c67d7cfa8dfac3c..97bbe9284072a0717466fe8c4cb7386b681b1b0d 100644 (file)
--- a/src/msw/listbox.cpp
+++ b/src/msw/listbox.cpp
@@ -351,7 +351,11 @@ void wxListBox::DoSetSelection(int N, bool select)
 
     if ( HasMultipleSelection() )
     {
-        SendMessage(GetHwnd(), LB_SETSEL, select, N);
+        // Setting selection to -1 should deselect everything.
+        const bool deselectAll = N == wxNOT_FOUND;
+        SendMessage(GetHwnd(), LB_SETSEL,
+                    deselectAll ? FALSE : select,
+                    deselectAll ? -1 : N);
     }
     else
     {
@@ -663,15 +667,11 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
             // item ourselves below in this case.
             n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0);
         }
-        else
-        {
-            n = HitTest(ScreenToClient(wxGetMousePosition()));
-        }
+        //else: n will be determined below from the mouse position
     }
     else if ( param == LBN_DBLCLK )
     {
         evtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED;
-        n = HitTest(ScreenToClient(wxGetMousePosition()));
     }
     else
     {
@@ -679,8 +679,28 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
         return false;
     }
 
-    // only send an event if we have a valid item
-    return n != wxNOT_FOUND && SendEvent(evtType, n, true /* selection */);
+    // Find the item position if it was a mouse-generated selection event or a
+    // double click event (which is always generated using the mouse)
+    if ( n == wxNOT_FOUND )
+    {
+        const DWORD pos = ::GetMessagePos();
+        const wxPoint pt(GET_X_LPARAM(pos), GET_Y_LPARAM(pos));
+        n = HitTest(ScreenToClient(wxPoint(pt)));
+    }
+
+    // We get events even when mouse is clicked outside of any valid item from
+    // Windows, just ignore them.
+    if ( n == wxNOT_FOUND )
+       return false;
+
+    if ( param == LBN_SELCHANGE )
+    {
+        if ( !DoChangeSingleSelection(n) )
+            return false;
+    }
+
+    // Do generate an event otherwise.
+    return SendEvent(evtType, n, true /* selection */);
 }
 
 WXLRESULT