riched20: Implement superscript/subscript shortcut key.

[Huw Davies]

On Thu, Oct 29, 2015 at 02:02:23PM +0800, Jactry Zeng wrote:
> diff --git a/dlls/riched20/editor.c b/dlls/riched20/editor.c
> index 98c7414..a54c0c7 100644
> --- a/dlls/riched20/editor.c
> +++ b/dlls/riched20/editor.c
> @@ -2442,6 +2442,32 @@ ME_KeyDown(ME_TextEditor *editor, WORD nKey)
>          return TRUE;
>        }
>        break;
> +    case VK_OEM_PLUS:
> +        if (ctrl_is_down)
> +        {
> +            CHARFORMAT2W fmt;
> +
> +            ZeroMemory(&fmt, sizeof(fmt));
> +            fmt.cbSize = sizeof(CHARFORMAT2W);
> +            SendMessageW(editor->hWnd, EM_GETCHARFORMAT, SCF_SELECTION, (LPARAM)&fmt);
> +            if (shift_is_down)
> +            {
> +                if (fmt.dwEffects & CFE_SUBSCRIPT)
> +                    fmt.dwEffects &= ~CFE_SUBSCRIPT;
> +                fmt.dwMask = CFM_SUPERSCRIPT;
> +                fmt.dwEffects ^= CFE_SUPERSCRIPT;
> +            }
> +            else
> +            {
> +                if (fmt.dwEffects & CFE_SUPERSCRIPT)
> +                    fmt.dwEffects &= ~CFE_SUPERSCRIPT;
> +                fmt.dwMask = CFM_SUBSCRIPT;
> +                fmt.dwEffects ^= CFE_SUBSCRIPT;
> +            }
> +            SendMessageW(editor->hWnd, EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM)&fmt);
> +            return TRUE;
> +        }
> +        break;
>      case VK_ESCAPE:
>        if (editor->bDialogMode && editor->hwndParent)
>          PostMessageW(editor->hwndParent, WM_CLOSE, 0, 0);
> 

Again, it shouldn't be too hard to add a test for this.  We do similar tests
by sending WM_KEYDOWN/UP messages to the control.

Huw.