如何将数据在自定义类型的变量和字节数组之间转换

[zhangdr]

我现在用Winsock编写一段程序,winsock的SendData方法的参数只能是简单类型的变量或数组,不能是自定义类型的变量,我记得好象可以用CopyMemory的API函数将数据从自定义类型的变量中读入一个字节数组中,可我试了一下,不行.它的错误提示是在字节数组上出现"参数类型不匹配".另外,我也需要在接收端将数据从字节数组中还原到一个自定义的变量中,希望高手予以指点一二.

[Carrie]

用vc吧.只要用send就可以传自定义类型的变量了.

[Un1]

注意申明：

Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" ( _
lpvDest As Any, lpvSource As Any, ByVal cbCopy As Long)


Type taaa
a as long
b as integer
c as byte
end type


dim a as taaa
a.a = ...


'send
dim lc as long
lc=lenb(a)

dim bt() as byte
redim bt(lc-1)

Copymemory bt(0),a,lc

winsock1.senddata bt


'recieve:
dim bt() as byte
winsock1.getdata bt


dim a as taaa
Copymemory a, bt(0), lenb(a)