SetTextAlign

 SetTextAlign (hdc, TA_RIGHT | TA_TOP) ;

               TextOut (hdc, 22 * cxCaps + 30 * cxChar, cyChar * i, szBuffer,
                        wsprintf (szBuffer, TEXT ("%5d"),
                             GetSystemMetrics (sysmetrics[i].iIndex))) ;

               SetTextAlign (hdc, TA_LEFT | TA_TOP) ;

TextOut函数中wsprintf(szBuffer, TEXT("%5d"), GetSystemMetrics(sysmetrics[i].iIndex)这个参数把输出的数值格式化成5位宽，不足五位的会在前面补空格，数字的宽度还是要比空格宽,所以没有左对齐