eVC4 updates

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

diff --git a/src/msw/textctrl.cpp b/src/msw/textctrl.cpp
index d577edd1a2d5c31f310aa234d28ef3ed1ff0d16d..7dd6a84fcfc42c2de707c7a87a0f025cf8046b56 100644 (file)
--- a/src/msw/textctrl.cpp
+++ b/src/msw/textctrl.cpp
@@ -564,9 +564,8 @@ wxString wxTextCtrl::GetRange(long from, long to) const
                 if ( !str.empty() )
                 {
                     // we have to manually extract the required part, luckily
-                    // this is easy in this case as EOL characters in richedit
-                    // version > 1 are just '\r's and so positions map to
-                    // string indices one to one (unlike with richedit 1)
+                    // this is easy in this case as EOL characters in str are
+                    // just LFs because we remove CRs in wxRichEditStreamOut
                     str = str.Mid(from, to - from);
                 }
             }
@@ -638,6 +637,9 @@ void wxTextCtrl::SetValue(const wxString& value)
     if ( (value.length() > 0x400) || (value != GetValue()) )
     {
         DoWriteText(value, FALSE /* not selection only */);
+        
+        // for compatibility, don't move the cursor when doing SetValue()
+        SetInsertionPoint(0);
     }
     else // same text
     {
@@ -650,9 +652,6 @@ void wxTextCtrl::SetValue(const wxString& value)
     // mark the control as being not dirty - we changed its text, not the
     // user
     DiscardEdits();
-
-    // for compatibility, don't move the cursor when doing SetValue()
-    SetInsertionPoint(0);
 }
 
 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
@@ -681,24 +680,37 @@ wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
     return 0;
 }
 
+// helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
+struct wxStreamOutData
+{
+    wchar_t *wpc;
+    size_t len;
+};
+
 DWORD CALLBACK
 wxRichEditStreamOut(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 {
     *pcb = 0;
 
-    wchar_t ** const ppws = (wchar_t **)dwCookie;
+    wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 
     const wchar_t *wbuf = (const wchar_t *)buf;
-    wchar_t *wpc = *ppws;
-    while ( cb && *wpc )
+    wchar_t *wpc = data->wpc;
+    while ( cb )
     {
-         *wpc++ = *wbuf++;
+        wchar_t wch = *wbuf++;
+
+        // turn "\r\n" into "\n" on the fly
+        if ( wch != L'\r' )
+            *wpc++ = wch;
+        else
+            data->len--;
 
         cb -= sizeof(wchar_t);
         (*pcb) += sizeof(wchar_t);
     }
 
-    *ppws = wpc;
+    data->wpc = wpc;
 
     return 0;
 }
@@ -783,9 +795,13 @@ wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
     wchar_t *wpc = wchBuf;
 #endif
 
+    wxStreamOutData data;
+    data.wpc = wpc;
+    data.len = len;
+
     EDITSTREAM eds;
     wxZeroMemory(eds);
-    eds.dwCookie = (DWORD)&wpc;
+    eds.dwCookie = (DWORD)&data;
     eds.pfnCallback = wxRichEditStreamOut;
 
     ::SendMessage
@@ -802,13 +818,17 @@ wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
     }
     else // streamed out ok
     {
-        // now convert to the given encoding (this is a lossful conversion but
-        // what else can we do)
+        // NUL-terminate the string because its length could have been
+        // decreased by wxRichEditStreamOut
+        *(wchBuf.data() + data.len) = L'\0';
+
+        // now convert to the given encoding (this is a possibly lossful
+        // conversion but what else can we do)
         wxCSConv conv(encoding);
-        size_t lenNeeded = conv.WC2MB(NULL, wchBuf, len);
-        if ( lenNeeded )
+        size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
+        if ( lenNeeded++ )
         {
-            conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, len);
+            conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
         }
     }