gdi32/path.c -- Allow PATH_ExtTextOut() handle nonprintablecharacters

[Massimo Del Fedele]

Massimo Del Fedele ha scritto:


> But then, I'm still not sure IF GetGlyphOutlineW does return GDI_ERROR 
> when called with GGO_GLYPH_INDEX flag (msn is not clear about...) nor I 
> know how to make a call to GetGlyphOutlineW() requesting a buffer size 
> which simulates an error. I could do with a wrong HDC, but we will be 
> never sure that some other kind of error wouldn't return NULL instead of 
> GDI_ERROR. My patch simply avoided the problem with :
> 
> dwSize = GetGlyphOutlineW(hdc, str[idx], GGO_GLYPH_INDEX | GGO_NATIVE, 
> &gm, 0, NULL, &identity);
> if(dwSize)
> {
>    HERE NORMAL PROCESSING - BUF SIZE OK
> }
> /* GetGlyphOutlineW may return null size for space character,
>    so we try to get the metrics for it */
> else if(GetGlyphOutlineW(hdc, str[idx], GGO_GLYPH_INDEX | GGO_METRICS, 
> &gm, 0, NULL, &identity) == GDI_ERROR)
>             return FALSE;
> 
> This is guaranteed to work as by MSN description.
> 
> Ciao
> 
> Max
> 
> 
Hmmmmm... even better :


if(dwSize == GDI_ERROR)
      return FALSE;
if(dwSize)
{
     HERE NORMAL PROCESSING - BUF SIZE OK
}
/* GetGlyphOutlineW may return null size for space character,
    so we try to get the metrics for it */
else if(GetGlyphOutlineW(hdc, str[idx], GGO_GLYPH_INDEX | GGO_METRICS, 
&gm, 0, NULL, &identity) == GDI_ERROR)
      return FALSE;

This will work on evey possible case....

Max