don't give empty message box if Parse(FALSE) was called and there was --help on the...

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

diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index d6c6ca249df49093bd805cb3bcbe28fa8a3b9317..07d4a17190f9ac956421f2bc1508111e0758c56f 100644 (file)
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -318,6 +318,8 @@ void wxWindowMSW::Init()
     m_mouseInWindow = FALSE;
     m_lastKeydownProcessed = FALSE;
 
+    m_childrenDisabled = NULL;
+
     // wxWnd
     m_hMenu = 0;
 
@@ -378,6 +380,8 @@ wxWindowMSW::~wxWindowMSW()
         // remove hWnd <-> wxWindow association
         wxRemoveHandleAssociation(this);
     }
+
+    delete m_childrenDisabled;
 }
 
 // real construction (Init() must have been called before!)
@@ -498,19 +502,58 @@ bool wxWindowMSW::Enable(bool enable)
     if ( hWnd )
         ::EnableWindow(hWnd, (BOOL)enable);
 
-    // VZ: no, this is a bad idea: imagine that you have a dialog with some
-    //     disabled controls and disable it - you really wouldn't like the
-    //     disabled controls be reenabled too when you reenable the dialog!
-#if 0
-    wxWindowList::Node *node = GetChildren().GetFirst();
-    while ( node )
+    // the logic below doesn't apply to the top level windows -- otherwise
+    // showing a modal dialog would result in total greying out (and ungreying
+    // out later) of everything which would be really ugly
+    if ( IsTopLevel() )
+        return TRUE;
+
+    // when the parent is disabled, all of its children should be disabled as
+    // well but when it is enabled back, only those of the children which
+    // hadn't been already disabled in the beginning should be enabled again,
+    // so we have to keep the list of those children
+    for ( wxWindowList::Node *node = GetChildren().GetFirst();
+          node;
+          node = node->GetNext() )
     {
         wxWindow *child = node->GetData();
-        child->Enable(enable);
+        if ( child->IsTopLevel() )
+        {
+            // the logic below doesn't apply to top level children
+            continue;
+        }
 
-        node = node->GetNext();
+        if ( enable )
+        {
+            // enable the child back unless it had been disabled before us
+            if ( !m_childrenDisabled || !m_childrenDisabled->Find(child) )
+                child->Enable();
+        }
+        else // we're being disabled
+        {
+            if ( child->IsEnabled() )
+            {
+                // disable it as children shouldn't stay enabled while the
+                // parent is not
+                child->Disable();
+            }
+            else // child already disabled, remember it
+            {
+                // have we created the list of disabled children already?
+                if ( !m_childrenDisabled )
+                    m_childrenDisabled = new wxWindowList;
+
+                m_childrenDisabled->Append(child);
+            }
+        }
+    }
+
+    if ( enable && m_childrenDisabled )
+    {
+        // we don't need this list any more, don't keep unused memory
+        delete m_childrenDisabled;
+        m_childrenDisabled = NULL;
     }
-#endif // 0
 
     return TRUE;
 }
@@ -1420,11 +1463,15 @@ void wxWindowMSW::Refresh(bool eraseBack, const wxRect *rect)
 
 void wxWindowMSW::Update()
 {
+#ifdef __WXWINE__
+    ::UpdateWindow(GetHwnd());
+#else
     if ( !::UpdateWindow(GetHwnd()) )
     {
         wxLogLastError(_T("UpdateWindow"));
     }
-
+#endif
+    
 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
     // just calling UpdateWindow() is not enough, what we did in our WM_PAINT
     // handler needs to be really drawn right now