fix more Borland release build warnings about unused variable/code without effect

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

diff --git a/src/msw/textctrl.cpp b/src/msw/textctrl.cpp
index 412c7a551aa12aec0f65b7b8906ffbe512b95c15..83d1ffbd060cdf7c59089ec68267872dc14a1ef3 100644 (file)
--- a/src/msw/textctrl.cpp
+++ b/src/msw/textctrl.cpp
@@ -248,6 +248,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 
 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
     EVT_CHAR(wxTextCtrl::OnChar)
+    EVT_KEY_DOWN(wxTextCtrl::OnKeyDown)
     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 
 #if wxUSE_RICHEDIT
@@ -483,9 +484,19 @@ bool wxTextCtrl::MSWCreateText(const wxString& value,
         valueWin = value;
     }
 
+    // suppress events sent during control creation: we're called either from
+    // the ctor and then we shouldn't generate any events for compatibility
+    // with the other ports, or from SetWindowStyleFlag() and then we shouldn't
+    // generate the events because our text doesn't really change, the fact
+    // that we (sometimes) need to recreate the control is just an
+    // implementation detail
+    m_updatesCount = -2;
+
     if ( !MSWCreateControl(windowClass.wx_str(), msStyle, pos, size, valueWin) )
         return false;
 
+    m_updatesCount = -1;
+
 #if wxUSE_RICHEDIT
     if (IsRich())
     {
@@ -784,10 +795,12 @@ wxString wxTextCtrl::GetRange(long from, long to) const
                    encoding = font.GetEncoding();
                 }
 
+#if wxUSE_INTL
                 if ( encoding == wxFONTENCODING_SYSTEM )
                 {
                     encoding = wxLocale::GetSystemEncoding();
                 }
+#endif // wxUSE_INTL
 
                 if ( encoding == wxFONTENCODING_SYSTEM )
                 {
@@ -974,15 +987,13 @@ wxTextCtrl::StreamIn(const wxString& value,
 
     const size_t len = conv.MB2WC(NULL, value.mb_str(), value.length());
 
-#if wxUSE_WCHAR_T
-    wxWCharBuffer wchBuf(len);
+    if (len == wxCONV_FAILED)
+        return false;
+
+    wxWCharBuffer wchBuf(len); // allocates one extra character
     wchar_t *wpc = wchBuf.data();
-#else
-    wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
-    wchar_t *wpc = wchBuf;
-#endif
 
-    conv.MB2WC(wpc, value.mb_str(), value.length());
+    conv.MB2WC(wpc, value.mb_str(), len + 1);
 #endif // wxUSE_UNICODE_MSLU
 
     // finally, stream it in the control
@@ -1066,7 +1077,8 @@ wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
         // conversion but what else can we do)
         wxCSConv conv(encoding);
         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
-        if ( lenNeeded++ )
+
+        if ( lenNeeded != wxCONV_FAILED && lenNeeded++ )
         {
             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
         }
@@ -1299,6 +1311,13 @@ void wxTextCtrl::DoSetSelection(long from, long to, int flags)
 #if wxUSE_RICHEDIT
     if ( IsRich() )
     {
+        // if from and to are both -1, it means (in wxWidgets) that all text
+        // should be selected, translate this into Windows convention
+        if ( (from == -1) && (to == -1) )
+        {
+            from = 0;
+        }
+
         CHARRANGE range;
         range.cpMin = from;
         range.cpMax = to;
@@ -1833,6 +1852,35 @@ void wxTextCtrl::OnChar(wxKeyEvent& event)
     event.Skip();
 }
 
+void wxTextCtrl::OnKeyDown(wxKeyEvent& event)
+{
+    // richedit control doesn't send WM_PASTE, WM_CUT and WM_COPY messages
+    // when Ctrl-V, X or C is pressed and this prevents wxClipboardTextEvent
+    // from working. So we work around it by intercepting these shortcuts
+    // ourselves and emitting clipboard events (which richedit will handle,
+    // so everything works as before, including pasting of rich text):
+    if ( event.GetModifiers() == wxMOD_CONTROL && IsRich() )
+    {
+        switch ( event.GetKeyCode() )
+        {
+            case 'C':
+                Copy();
+                return;
+            case 'X':
+                Cut();
+                return;
+            case 'V':
+                Paste();
+                return;
+            default:
+                break;
+        }
+    }
+
+    // no, we didn't process it
+    event.Skip();
+}
+
 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 {
     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
@@ -1869,7 +1917,7 @@ WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                 else // !editable
                 {
                     // NB: use "=", not "|=" as the base class version returns
-                    //     the same flags is this state as usual (i.e.
+                    //     the same flags in the disabled state as usual (i.e.
                     //     including DLGC_WANTMESSAGE). This is strange (how
                     //     does it work in the native Win32 apps?) but for now
                     //     live with it.
@@ -1877,13 +1925,6 @@ WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                 }
             }
             break;
-
-        case WM_CUT:
-        case WM_COPY:
-        case WM_PASTE:
-            if ( HandleClipboardEvent(nMsg) )
-                lRc = 0;
-            break;
     }
 
     return lRc;
@@ -1928,17 +1969,6 @@ bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 {
     switch ( param )
     {
-        case EN_SETFOCUS:
-        case EN_KILLFOCUS:
-            {
-                wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
-                                                         : wxEVT_SET_FOCUS,
-                                   m_windowId);
-                event.SetEventObject(this);
-                HandleWindowEvent(event);
-            }
-            break;
-
         case EN_CHANGE:
             SendUpdateEvent();
             break;
@@ -1954,7 +1984,9 @@ bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
             }
             break;
 
-            // the other edit notification messages are not processed
+            // the other edit notification messages are not processed (or, in
+            // the case of EN_{SET/KILL}FOCUS were already handled at WM_SET/
+            // KILLFOCUS level)
         default:
             return false;
     }
@@ -2067,15 +2099,12 @@ void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 
 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
 {
-    long from, to;
-    GetSelection(& from, & to);
-    if (from != -1 && to != -1)
-        Remove(from, to);
+    RemoveSelection();
 }
 
 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
 {
-    SetSelection(-1, -1);
+    SelectAll();
 }
 
 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
@@ -2105,14 +2134,12 @@ void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 
 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
 {
-    long from, to;
-    GetSelection(& from, & to);
-    event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
+    event.Enable( HasSelection() && IsEditable() );
 }
 
 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
 {
-    event.Enable(GetLastPosition() > 0);
+    event.Enable( !IsEmpty() );
 }
 
 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
@@ -2141,13 +2168,15 @@ void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
     event.Skip();
 }
 
-void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
+void wxTextCtrl::OnSetFocus(wxFocusEvent& event)
 {
     // be sure the caret remains invisible if the user had hidden it
     if ( !m_isNativeCaretShown )
     {
         ::HideCaret(GetHwnd());
     }
+
+    event.Skip();
 }
 
 // ----------------------------------------------------------------------------