rem: createDrawBuffer(Ruler *rPtr)
add: static void createDrawBuffer(Ruler * rPtr)
context: createDrawBuffer(Ruler *rPtr){    if(rPtr->drawBuffer)        XFreePixmap(rPtr->view->screen->display, rPtr->drawBuffer);    rPtr->drawBuffer = XCreatePixmap(rPtr->view->screen->display,                                     rPtr->view->window,  rPtr->view->size.width, 40,                                     rPtr->view->screen->depth);    XFillRectangle(rPtr->view->screen->display, rPtr->drawBuffer,                   rPtr->bg, 0, 0,  rPtr->view->size.width, 40);}