1. modified wxMSW::wxCaret to use client coords

2. fixed uninit m_curXXX vars leading to a crash in wxMSW
3. fixed wxWindow::DoDrawBackground() for empty update region


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxUNIVERSAL@8406 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/textctrl.cpp

@@ -71,6 +71,10 @@ void wxTextCtrl::Init()
     m_isEditable = TRUE;
 
     m_ofsHorz = 0;
+
+    m_curPos =
+    m_curRow =
+    m_curLine = 0;
 }
 
 bool wxTextCtrl::Create(wxWindow *parent,
@@ -90,7 +94,9 @@ bool wxTextCtrl::Create(wxWindow *parent,
 
     // FIXME use renderer
     wxCaret *caret = new wxCaret(this, 1, GetCharHeight());
+#ifndef __WXMSW__
     caret->SetBlinkTime(0);
+#endif // __WXMSW__
     SetCaret(caret);
 
     SetCursor(wxCURSOR_IBEAM);