[PATCH] gdiplus: Fix errors in image dimensions.

[Dmitry Timoshkov]

"Nathan Beckmann" <nathan.beckmann at gmail.com> wrote:

> -    y = (UINT)(((REAL)y) * ((REAL)GetDeviceCaps(hdcref, LOGPIXELSY)) /
> -              ((REAL)INCH_HIMETRIC));
> +    /* this calculation can lead to truncation error */
> +    y = (UINT)((((REAL)y) * ((REAL)GetDeviceCaps(hdcref, LOGPIXELSY)) /
> +              ((REAL)INCH_HIMETRIC)) + 0.5);

Using MulDiv instead should be a more appropriate fix here.

-- 
Dmitry.