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riched20: Always treat the nCount variable in the EM_GETTEXTEX handler as a character count. 

Convert ex->cb into a character count before assigning it to nCount.

Remove some dubious minus ones that would result in different character 
counts for the Unicode and ANSI paths.
This commit is contained in:
Rob Shearman 2008-01-18 13:24:26 +00:00 committed by Alexandre Julliard
parent 374f6ec616
commit 4bff248783
1 changed files with 6 additions and 4 deletions
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10
dlls/riched20/editor.c
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@ -2101,7 +2101,7 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
case EM_GETTEXTEX:
{
GETTEXTEX *ex = (GETTEXTEX*)wParam;
int nStart, nCount;
int nStart, nCount; /* in chars */
if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
FIXME("GETTEXTEX flags 0x%08x not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
@ -2110,12 +2110,11 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
{
ME_GetSelection(editor, &nStart, &nCount);
nCount -= nStart;
nCount = min(nCount, ex->cb - 1);
}
else
{
nStart = 0;
nCount = ex->cb - 1;
nCount = 0x7fffffff;
}
if (ex->codepage == 1200)
{
@ -2127,11 +2126,14 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
/* potentially each char may be a CR, why calculate the exact value with O(N) when
we can just take a bigger buffer? :) */
int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
LPWSTR buffer = heap_alloc((crlfmul*nCount + 1) * sizeof(WCHAR));
LPWSTR buffer;
DWORD buflen = ex->cb;
LRESULT rc;
DWORD flags = 0;
nCount = min(nCount, ex->cb - 1);
buffer = heap_alloc((crlfmul*nCount + 1) * sizeof(WCHAR));
buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
rc = WideCharToMultiByte(ex->codepage, flags, buffer, -1, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
if (rc) rc--; /* do not count 0 terminator */