SetPropChar("baojing.pdl","控件1","MsgFilterSQL","DATETIME >= ''2017-03-14 16:00:00.000'' AND DATETIME <= ''2017-03-15 15:00:00.000''");这是别人写的报警记录查询函数,如果把常量换成变量,该怎么做?中间的“—”横线,“ ”空格也占一个字符吗?我用变量,怎么会自动清空控件?
SetPropChar("baojing.pdl","控1","MsgFilterSQL","DATETIME >= 'BeginTime' AND DATETIME <= 'EndTime' ");