Use of itempostpaint

void CMyTrre::OnCustomDraw(NMHDR *pNMHDR, LRESULT *pResult)
{
	LPNMTVCUSTOMDRAW pCustomDraw = reinterpret_cast<LPNMTVCUSTOMDRAW>(pNMHDR);
	*pResult = 0;


	NMTVCUSTOMDRAW *pcd = (NMTVCUSTOMDRAW   *)pNMHDR;
	switch (pcd->nmcd.dwDrawStage)
	{
	case CDDS_PREPAINT:
		*pResult = CDRF_NOTIFYITEMDRAW;
		break;

	case CDDS_ITEMPOSTPAINT:
	{	
		HTREEITEM   hItem = (HTREEITEM)pcd->nmcd.dwItemSpec;
		
		CString giorno;
		giorno = GetItemText(hItem);//ottengo il mese o giorno
		int n_pos;
		n_pos = giorno.Find(_T("a"));
		if (n_pos >= 0)
		{
			//Rectangle(pcd->nmcd.hdc, pcd->nmcd.rc.left, pcd->nmcd.rc.top, pcd->nmcd.rc.right, pcd->nmcd.rc.bottom);
			pcd->nmcd.rc.right = pcd->nmcd.rc.right + 30;
		//	pcd->nmcd.rc.bottom = pcd->nmcd.rc.bottom + 20;
			pcd->nmcd.rc.top = pcd->nmcd.rc.top + 23;
			DrawText(pcd->nmcd.hdc, _T("10:31pm"), 7, &pcd->nmcd.rc, DT_CENTER);
		}
	
		*pResult = CDRF_DODEFAULT;// do not set *pResult = CDRF_SKIPDEFAULT
		break;
	  }
	}
}