VB6中变量声明中的星号

发布时间：2020-12-17 07:15:45 所属栏目：百科来源：网络整理

导读：在变量声明之后,星号(*)和数字的含义是什么？如在WpName As String * 6中看到的那样 Public Type WayPoint WpIndex As Integer WpName As String * 6 WpLat As Double WpLon As Double WpLatDir As String * 1 WpLonDir As String * 1End Type 解决方法星号

在变量声明之后,星号(*)和数字的含义是什么？如在WpName As String * 6中看到的那样

Public Type WayPoint

   WpIndex As Integer
   WpName As String * 6
   WpLat As Double
   WpLon As Double
   WpLatDir As String * 1
   WpLonDir As String * 1

End Type

解决方法

星号将变量声明为固定长度的字符串,其中数字表示字符串的长度：

http://www.1sayfa.com/1024/diger/vb/ch07.htm#Heading8

The declaration of a fixed-length string variable contains an asterisk (*) to tell Visual Basic that the string will be a fixed length. The final parameter,strlength,tells the program the number of characters that the variable can contain.

它们可能是API调用所必需的,请参阅此问题：

VB6 – Is there any performance benefit gained by using fixed-width strings in VB6?

The only time in VB6 or earlier that I had to use fixed length strings was with working with API calls.

（编辑：李大同）

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