vb6 - VB6变量声明中的星号

Question

变量声明后的星号 (*) 和数字是什么意思？如 WpName As String * 6 中所见

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

Answer 1

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.

API 调用可能需要它们，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.