如果dim i as long
则 msgbox lenB(i)是正确的可是现在我dim i(1 to 100) as long
则 msgbox lenB(i())是错误的。怎样求LONG型数组I的字节大小啊？？我在使用DX8的DIRECTPLAY8的AddDataToBuffer语句把数据绑定到1个字节数组才好发送过去。
AddDataToBuffer oBuf, I, LenB(I（）), lOffset这样的格式是错误的。因为不能lenB(i())。怎样才能得到I数组的大小啊？必须得到I数组大小并且放到第三个 参数上才行的啊 大家帮帮忙啊
原型
AddDataToBuffer( Buffer() As Byte, lData As Any, lSize As Long, lOffset As Long)Parameters
Buffer
Byte array to which the data is to be added.
lData
Data that is to be added to Buffer.
lSize
Size, in bytes, of the data in lData. The simplest way to determine this value is to use the Microsoft® Visual Basic® LenB function. You can also use one of the values from the CONST_DPLAYBUFSIZE enumeration.
lOffset
Long value containing the offset, in bytes, to the location in the byte array where the data is to be added. When the function returns, this parameter will be set to the offset of the first byte following the data that has just been added.
Res
If the byte array passed to Buffer is not large enough to hold the added data, the array will be enlarged without data loss to a sufficient size.
则 msgbox lenB(i)是正确的可是现在我dim i(1 to 100) as long
则 msgbox lenB(i())是错误的。怎样求LONG型数组I的字节大小啊？？我在使用DX8的DIRECTPLAY8的AddDataToBuffer语句把数据绑定到1个字节数组才好发送过去。
AddDataToBuffer oBuf, I, LenB(I（）), lOffset这样的格式是错误的。因为不能lenB(i())。怎样才能得到I数组的大小啊？必须得到I数组大小并且放到第三个 参数上才行的啊 大家帮帮忙啊
原型
AddDataToBuffer( Buffer() As Byte, lData As Any, lSize As Long, lOffset As Long)Parameters
Buffer
Byte array to which the data is to be added.
lData
Data that is to be added to Buffer.
lSize
Size, in bytes, of the data in lData. The simplest way to determine this value is to use the Microsoft® Visual Basic® LenB function. You can also use one of the values from the CONST_DPLAYBUFSIZE enumeration.
lOffset
Long value containing the offset, in bytes, to the location in the byte array where the data is to be added. When the function returns, this parameter will be set to the offset of the first byte following the data that has just been added.
Res
If the byte array passed to Buffer is not large enough to hold the added data, the array will be enlarged without data loss to a sufficient size.
'应该这样去求Long型数组的长度：Dim i(1 To 100) As Long
MsgBox 4 * (UBound(i) - LBound(i) + 1)
如
TYPE typTest
xxx as long
yyy as long
zzz as long
end type
dim i (100) AS typTest
也要求出数组的总占用的字节大小。
修改一下,
MsgBox len(i(ubound(i)) * (UBound(i) - LBound(i) + 1)
不过这个并不准确,因为如果里面的成员是string或object的话,用这种方法算出来都只占4个字节
只要明白原理,怎样的东西都能求出来
LONG占4个字节。那么i(1 to 100)就占4*100＝400个字节了么？！
数组I本身也是要占用字节的！！也就是说i(1 to 100)应该是400＋n
你们怎么都在想当然呢！我现在是忘记了这个公式 也找不到了 谁有的话跟我说说 谢谢。不要再不负责任的说400了 谢谢
Type typTest
aaa(100) as byte
bbb(100) as string*10
ccc(100) as long
end typTestdim I as typTestlenb(i)'正常
＝＝＝＝把数组放到TYPE自定义类型里居然可以LENB。没天理 为什么单独的数组不能LENB呢？？
哦 上述的例子中自定义类型前提是：里面不能有OBJECT，不能有无定长字符串（因其是指针），不能有动态数组。＝＝＝＝＝＝＝＝＝＝＝＝
注意 任何数据类型的数组都需要 20 个字节的内存空间，加上每一数组维数占 4 个字节，再加上数据本身所占用的空间。数据所占用的内存空间可以用数据元数目乘上每个元素的大小加以计算。例如，以 4 个 2 字节之 Integer 数据元所组成的一维数组中的数据，占 8 个字节。这 8 个字节加上额外的 24 个字节，使得这个数组所需总内存空间为 32 个字节。包含一数组的 Variant 比单独的一个数组需要多 12 个字节。
dim s as integerfor j=1 to ubound(i)
s=s + Lenb(StrConv(i(j), vbFromUnicode))
next j
msgbox s
错误的，因为你传递一个byte(0)，那么将指向实际的地址，而不是那20字节前。
字定义格式用len来取得实际长度，我用API传递就是这样，copymemory。