When we're using GDI+, the DC might have transforms applied to it, but the renderer...

When we're using GDI+, the DC might have transforms applied to it, but the renderer APIs don't respect them. So we need to apply the transforms to the rect ourselves.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67704 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775