riched20: Constify some variables

[Andrew Talbot]

Changelog:
    riched20: Constify some variables.

diff -urN a/dlls/riched20/caret.c b/dlls/riched20/caret.c
--- a/dlls/riched20/caret.c	2007-06-06 13:43:15.000000000 +0100
+++ b/dlls/riched20/caret.c	2007-08-11 14:53:11.000000000 +0100
@@ -47,10 +47,10 @@
 }
 
 
-int ME_GetTextLengthEx(ME_TextEditor *editor, GETTEXTLENGTHEX *how)
+int ME_GetTextLengthEx(ME_TextEditor *editor, const GETTEXTLENGTHEX *how)
 {
   int length;
-  
+
   if (how->flags & GTL_PRECISE && how->flags & GTL_CLOSE)
     return E_INVALIDARG;
   if (how->flags & GTL_NUMCHARS && how->flags & GTL_NUMBYTES)
@@ -1148,8 +1148,8 @@
   else
     return 1;
 }
-      
-BOOL ME_UpdateSelection(ME_TextEditor *editor, ME_Cursor *pTempCursor)
+
+BOOL ME_UpdateSelection(ME_TextEditor *editor, const ME_Cursor *pTempCursor)
 {
   ME_Cursor old_anchor = editor->pCursors[1];
   
diff -urN a/dlls/riched20/clipboard.c b/dlls/riched20/clipboard.c
--- a/dlls/riched20/clipboard.c	2006-10-24 10:57:40.000000000 +0100
+++ b/dlls/riched20/clipboard.c	2007-08-11 14:46:39.000000000 +0100
@@ -45,7 +45,7 @@
     UINT cur;
 } EnumFormatImpl;
 
-static HRESULT EnumFormatImpl_Create(FORMATETC *fmtetc, UINT size, LPENUMFORMATETC *lplpformatetc);
+static HRESULT EnumFormatImpl_Create(const FORMATETC *fmtetc, UINT size, LPENUMFORMATETC *lplpformatetc);
 
 static HRESULT WINAPI EnumFormatImpl_QueryInterface(IEnumFORMATETC *iface, REFIID riid, LPVOID *ppvObj)
 {
@@ -147,7 +147,7 @@
     EnumFormatImpl_Clone
 };
 
-static HRESULT EnumFormatImpl_Create(FORMATETC *fmtetc, UINT fmtetc_cnt, IEnumFORMATETC **lplpformatetc)
+static HRESULT EnumFormatImpl_Create(const FORMATETC *fmtetc, UINT fmtetc_cnt, IEnumFORMATETC **lplpformatetc)
 {
     EnumFormatImpl *ret;
     TRACE("\n");
@@ -325,7 +325,7 @@
     DataObjectImpl_EnumDAdvise
 };
 
-static HGLOBAL get_unicode_text(ME_TextEditor *editor, CHARRANGE *lpchrg)
+static HGLOBAL get_unicode_text(ME_TextEditor *editor, const CHARRANGE *lpchrg)
 {
     int pars, len;
     WCHAR *data;
@@ -369,7 +369,7 @@
     return 0;
 }
 
-static HGLOBAL get_rtf_text(ME_TextEditor *editor, CHARRANGE *lpchrg)
+static HGLOBAL get_rtf_text(ME_TextEditor *editor, const CHARRANGE *lpchrg)
 {
     EDITSTREAM es;
     ME_GlobalDestStruct gds;
@@ -383,7 +383,7 @@
     return gds.hData;
 }
 
-HRESULT ME_GetDataObject(ME_TextEditor *editor, CHARRANGE *lpchrg, LPDATAOBJECT *lplpdataobj)
+HRESULT ME_GetDataObject(ME_TextEditor *editor, const CHARRANGE *lpchrg, LPDATAOBJECT *lplpdataobj)
 {
     DataObjectImpl *obj;
     TRACE("(%p,%d,%d)\n", editor, lpchrg->cpMin, lpchrg->cpMax);
diff -urN a/dlls/riched20/editor.c b/dlls/riched20/editor.c
--- a/dlls/riched20/editor.c	2007-06-28 14:10:18.000000000 +0100
+++ b/dlls/riched20/editor.c	2007-08-11 14:46:16.000000000 +0100
@@ -782,7 +782,7 @@
 
 
 static int
-ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, const WCHAR *text, CHARRANGE *chrgText)
+ME_FindText(ME_TextEditor *editor, DWORD flags, const CHARRANGE *chrg, const WCHAR *text, CHARRANGE *chrgText)
 {
   const int nLen = lstrlenW(text);
   const int nTextLen = ME_GetTextLength(editor);
diff -urN a/dlls/riched20/editor.h b/dlls/riched20/editor.h
--- a/dlls/riched20/editor.h	2007-03-22 15:12:15.000000000 +0000
+++ b/dlls/riched20/editor.h	2007-08-11 14:46:58.000000000 +0100
@@ -206,9 +206,9 @@
 void ME_InsertTableCellFromCursor(ME_TextEditor *editor, int nCursor);
 void ME_InternalDeleteText(ME_TextEditor *editor, int nOfs, int nChars);
 int ME_GetTextLength(ME_TextEditor *editor);
-int ME_GetTextLengthEx(ME_TextEditor *editor, GETTEXTLENGTHEX *how);
+int ME_GetTextLengthEx(ME_TextEditor *editor, const GETTEXTLENGTHEX *how);
 ME_Style *ME_GetSelectionInsertStyle(ME_TextEditor *editor);
-BOOL ME_UpdateSelection(ME_TextEditor *editor, ME_Cursor *pTempCursor);
+BOOL ME_UpdateSelection(ME_TextEditor *editor, const ME_Cursor *pTempCursor);
 
 /* wrap.c */
 void ME_PrepareParagraphForWrapping(ME_Context *c, ME_DisplayItem *tp);
@@ -285,4 +285,4 @@
 LRESULT ME_StreamOut(ME_TextEditor *editor, DWORD dwFormat, EDITSTREAM *stream);
 
 /* clipboard.c */
-HRESULT ME_GetDataObject(ME_TextEditor *editor, CHARRANGE *lpchrg, LPDATAOBJECT *lplpdataobj);
+HRESULT ME_GetDataObject(ME_TextEditor *editor, const CHARRANGE *lpchrg, LPDATAOBJECT *lplpdataobj);