fix handling Alt-key events in wxComboBox

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33038 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -34,6 +34,7 @@ wxMSW:
 
 - Added "orient" parameter to wxMDIParentFrame::Tile()
 - wxTextCtrl with wxTE_RICH2 style now uses RichEdit 4.1 if available
+- fix handling Alt-key events in wxComboBox (reported by Joakim Roubert)
 
 wxGTK:
 

src/msw/combobox.cpp

@@ -174,6 +174,9 @@ LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd,
         case WM_KEYUP:
         case WM_KEYDOWN:
         case WM_CHAR:
+        case WM_SYSCHAR:
+        case WM_SYSKEYDOWN:
+        case WM_SYSKEYUP:
         case WM_SETFOCUS:
         case WM_KILLFOCUS:
             {
@@ -299,12 +302,16 @@ bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
                     return true;
                 }
             }
+            // fall through
 
+        case WM_SYSCHAR:
             return HandleChar(wParam, lParam, true /* isASCII */);
 
+        case WM_SYSKEYDOWN:
         case WM_KEYDOWN:
             return HandleKeyDown(wParam, lParam);
 
+        case WM_SYSKEYUP:
         case WM_KEYUP:
             return HandleKeyUp(wParam, lParam);