//void setMaterialName(const String& matName);
void textareaoverlayelement_set_material_name(TextAreaOverlayElementHandle handle, const char* mat_name)
{
    Ogre::TextAreaOverlayElement* toe = static_cast<Ogre::TextAreaOverlayElement*>(handle);
    toe->setMaterialName(Ogre::String(mat_name));
}