IBM Lotus Symphony


Lof 函数 [运行时]

返回打开的文件的大小(字节)

语法:

Lof (FileNumber)

返回值:

长整型

参数:

FileNumber:包含 Open 语句中指定的文件号的数字表达式。

提示图标 要获取未打开文件的长度,请使用 FileLen 函数。

错误代码

5 无效的过程调用

52 错误的文件名称或编号

示例:

Sub ExampleRandomAccess

Dim iNumber As Integer

Dim sText As Variant REM must be a Variant

Dim aFile As String

aFile = "c:\data.txt"

iNumber = Freefile

Open aFile For Random As #iNumber Len=32

Seek #iNumber,1 REM Position at start

Put #iNumber,, "This is the first line of text" REM Fill with text

Put #iNumber,, "This is the second line of text"

Put #iNumber,, "This is the third line of text"

Seek #iNumber,2

Get #iNumber,,sText

Print sText

Close #iNumber

iNumber = Freefile

Open aFile For Random As #iNumber Len=32

Get #iNumber,2,sText

Put #iNumber,,"This is a new line of text"

Get #iNumber,1,sText

Get #iNumber,2,sText

Put #iNumber,20,"This is the text in record 20"

Print Lof(#iNumber)

Close #iNumber

end sub


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