X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f186bd4d4035909759af0e5e9fcfd958a879ed6f..46405e36bf9962b251e77e5048e96bf6a54edb15:/src/msw/listbox.cpp

diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp
index 3e19b2a9f2..97bbe92840 100644
--- 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
     {
@@ -686,7 +690,17 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 
     // We get events even when mouse is clicked outside of any valid item from
     // Windows, just ignore them.
-    return n != wxNOT_FOUND && SendEvent(evtType, n, true /* selection */);
+    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