问题
What's the meaning of the asterisk (*) and the number, after the variable declaration? As seen in WpName As String * 6
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
回答1:
The asterisk declares the variable as a fixed-length string, where the number indicates the length of the string:
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.
They may be required for an API call, see this question:
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.
来源：https://stackoverflow.com/questions/7293436/asterisks-in-variable-declarations-in-vb6