opengl: Initial attempt to address opengl child window bug

[Alexandre Julliard]

Ulrich Czekalla <ulrich.czekalla at utoronto.ca> writes:

> +    if (ctx && (hwnd = WindowFromDC(ctx->hdc)) != 0)
> +    {
> +        roothwnd = GetAncestor(hwnd, GA_ROOT);
> +
> +        if (roothwnd != hwnd)
> +        {
> +            GetClientRect(roothwnd, &rootrc);
> +            rheight = rootrc.bottom - rootrc.top;
> +
> +            GetWindowRect(hwnd, &rc);
> +            width = rc.right - rc.left;
> +            height = rc.bottom - rc.top;

Now that you can get access to the physDev, you should use this to
retrieve the position and size instead of using the window rectangles,
it will be more correct. For instance physDev->org gives you the
origin relative to the drawable, and you can get the clip rectangle
from physDev->region.

-- 
Alexandre Julliard
julliard at winehq.org