fix a problem with Unicows (patch 720542)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20411 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/msw/fdrepdlg.cpp b/src/msw/fdrepdlg.cpp
index 20eb2bc5036456ffd9e14b3e674e36a838822cd6..cc2b94299d417b11f1c110ff992b266e83440ed7 100644 (file)
--- a/src/msw/fdrepdlg.cpp
+++ b/src/msw/fdrepdlg.cpp
@@ -230,9 +230,33 @@ wxFindReplaceDialogImpl::~wxFindReplaceDialogImpl()
 LRESULT APIENTRY wxFindReplaceWindowProc(HWND hwnd, WXUINT nMsg,
                                          WPARAM wParam, LPARAM lParam)
 {
+#if wxUSE_UNICODE_MSLU
+    static unsigned long s_lastMsgFlags = 0;
+
+    // This flag helps us to identify the bogus ANSI message
+    // sent by UNICOWS.DLL (see below)
+    // while we're sending our message to the dialog
+    // we ignore possible messages sent in between
+    static bool s_blockMsg = false;
+#endif // wxUSE_UNICODE_MSLU
+
     if ( nMsg == wxFindReplaceDialogImpl::GetFindDialogMessage() )
     {
         FINDREPLACE *pFR = (FINDREPLACE *)lParam;
+
+#if wxUSE_UNICODE_MSLU
+        // This is a hack for a MSLU problem: Versions up to 1.0.4011
+        // of UNICOWS.DLL send the correct UNICODE item after button press
+        // and a bogus ANSI mode item right after this, so lets ignore
+        // the second bogus message
+        if ( s_lastMsgFlags == pFR->Flags )
+        {
+            s_lastMsgFlags = 0;
+            return 0;
+        }
+        s_lastMsgFlags = pFR->Flags;
+#endif // wxUSE_UNICODE_MSLU
+
         wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 
         // map flags from Windows
@@ -288,8 +312,20 @@ LRESULT APIENTRY wxFindReplaceWindowProc(HWND hwnd, WXUINT nMsg,
             event.SetReplaceString(pFR->lpstrReplaceWith);
         }
 
+#if wxUSE_UNICODE_MSLU
+        s_blockMsg = true;
+#endif // wxUSE_UNICODE_MSLU
+
         dialog->Send(event);
+
+#if wxUSE_UNICODE_MSLU
+        s_blockMsg = false;
+#endif // wxUSE_UNICODE_MSLU
     }
+#if wxUSE_UNICODE_MSLU
+    else if ( !s_blockMsg )
+        s_lastMsgFlags = 0;
+#endif // wxUSE_UNICODE_MSLU
 
     WNDPROC wndProc = (WNDPROC)::GetWindowLong(hwnd, GWL_USERDATA);