add: WMPostNotificationName(WMScrollerDidScrollNotification, sPtr, NULL);
context: WMSetScrollerParameters(WMScroller *sPtr, float floatValue,			float knobProportion){    CHECK_CLASS(sPtr, WC_Scroller);    if (floatValue < 0.0)	sPtr->floatValue = 0.0;    else if (floatValue > 1.0)	sPtr->floatValue = 1.0;    else	sPtr->floatValue = floatValue;    if (knobProportion <= 0.0) {		sPtr->knobProportion = 0.0;	sPtr->flags.documentFullyVisible = 0;	    } else if (knobProportion >= 1.0) {		sPtr->knobProportion = 1.0;	sPtr->flags.documentFullyVisible = 1;	    } else {	sPtr->knobProportion = knobProportion;	sPtr->flags.documentFullyVisible = 0;    }    if (sPtr->view->flags.realized)	paintScroller(sPtr);}