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richedit: Fixed a couple of charformatXXm structure conversions because of alignment issues.

This commit is contained in:
Eric Pouech 2008-01-01 22:03:28 +01:00 committed by Alexandre Julliard
parent 71f52d54bd
commit a607ad316e
1 changed files with 17 additions and 9 deletions
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24
dlls/riched20/style.c
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@ -25,12 +25,20 @@ WINE_DECLARE_DEBUG_CHANNEL(richedit_style);
static int all_refs = 0;
/* the following routines assume that:
* - char2[AW] extends char[AW] by adding fields at the end of the charA form)
* - szFaceName is the last field of char[AW] form, and wWeight the first of 2[AW]
* - the difference between A and W form is the szFaceName as Ansi vs Unicode string
* - because of alignment, offset of wWeight field in 2[AW] structure *IS NOT*
* sizeof(char[AW])
*/
CHARFORMAT2W *ME_ToCF2W(CHARFORMAT2W *to, CHARFORMAT2W *from)
{
if (from->cbSize == sizeof(CHARFORMATA))
{
CHARFORMATA *f = (CHARFORMATA *)from;
CopyMemory(to, f, sizeof(*f)-sizeof(f->szFaceName));
CopyMemory(to, f, FIELD_OFFSET(CHARFORMATA, szFaceName));
to->cbSize = sizeof(CHARFORMAT2W);
if (f->dwMask & CFM_FACE) {
MultiByteToWideChar(0, 0, f->szFaceName, -1, to->szFaceName, sizeof(to->szFaceName)/sizeof(WCHAR));
@ -42,20 +50,20 @@ CHARFORMAT2W *ME_ToCF2W(CHARFORMAT2W *to, CHARFORMAT2W *from)
CHARFORMATW *f = (CHARFORMATW *)from;
CopyMemory(to, f, sizeof(*f));
/* theoretically, we don't need to zero the remaining memory */
ZeroMemory(((CHARFORMATW *)to)+1, sizeof(CHARFORMAT2W)-sizeof(CHARFORMATW));
ZeroMemory(&to->wWeight, sizeof(CHARFORMAT2W)-FIELD_OFFSET(CHARFORMAT2W, wWeight));
to->cbSize = sizeof(CHARFORMAT2W);
return to;
}
if (from->cbSize == sizeof(CHARFORMAT2A))
{
CHARFORMATA *f = (CHARFORMATA *)from;
CHARFORMAT2A *f = (CHARFORMAT2A *)from;
/* copy the A structure without face name */
CopyMemory(to, f, sizeof(CHARFORMATA)-sizeof(f->szFaceName));
CopyMemory(to, f, FIELD_OFFSET(CHARFORMATA, szFaceName));
/* convert face name */
if (f->dwMask & CFM_FACE)
MultiByteToWideChar(0, 0, f->szFaceName, -1, to->szFaceName, sizeof(to->szFaceName)/sizeof(WCHAR));
/* copy the rest of the 2A structure to 2W */
CopyMemory(1+((CHARFORMATW *)to), f+1, sizeof(CHARFORMAT2A)-sizeof(CHARFORMATA));
CopyMemory(&to->wWeight, &f->wWeight, sizeof(CHARFORMAT2A)-FIELD_OFFSET(CHARFORMAT2A, wWeight));
to->cbSize = sizeof(CHARFORMAT2W);
return to;
}
@ -75,7 +83,7 @@ CHARFORMAT2W *ME_ToCFAny(CHARFORMAT2W *to, CHARFORMAT2W *from)
if (to->cbSize == sizeof(CHARFORMATA))
{
CHARFORMATA *t = (CHARFORMATA *)to;
CopyMemory(t, from, sizeof(*t)-sizeof(t->szFaceName));
CopyMemory(t, from, FIELD_OFFSET(CHARFORMATA, szFaceName));
WideCharToMultiByte(0, 0, from->szFaceName, -1, t->szFaceName, sizeof(t->szFaceName), 0, 0);
t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
return to;
@ -91,11 +99,11 @@ CHARFORMAT2W *ME_ToCFAny(CHARFORMAT2W *to, CHARFORMAT2W *from)
{
CHARFORMAT2A *t = (CHARFORMAT2A *)to;
/* copy the A structure without face name */
CopyMemory(t, from, sizeof(CHARFORMATA)-sizeof(t->szFaceName));
CopyMemory(t, from, FIELD_OFFSET(CHARFORMATA, szFaceName));
/* convert face name */
WideCharToMultiByte(0, 0, from->szFaceName, -1, t->szFaceName, sizeof(t->szFaceName), 0, 0);
/* copy the rest of the 2A structure to 2W */
CopyMemory(&t->wWeight, &from->wWeight, sizeof(CHARFORMAT2A)-sizeof(CHARFORMATA));
CopyMemory(&t->wWeight, &from->wWeight, sizeof(CHARFORMAT2W)-FIELD_OFFSET(CHARFORMAT2W,wWeight));
t->cbSize = sizeof(*t); /* it was overwritten by CopyMemory */
return to;
}