VB 长整型和字节数组的转换问题 (LongByte)
VB 长整型和字节数组的转换问题 (Long<>Byte)
Posted by JiaJia 17 March,2009 (0)Comment
用到的API声明：
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Long2Byte
Dim TempLng As Long
Dim TempBytes(0 To 3) As Byte
TempLng = 2000
#If 方法1 Then
CopyMemory TempBytes(0), TempLng, 4
#ElseIf 方法2 Then
TempBytes(0) = TempLng And &HFF
TempBytes(1) = (TempLng And &HFF00&) \ &H100
TempBytes(2) = (TempLng And &HFF0000) \ &H10000
TempBytes(3) = (TempLng And &H7F000000) \ &H1000000 Or (((TempLng And &H80000000) <> 0) And &H80)
#End If
Byte2Long
Dim l_byte(0 To 3) As Byte '要被转化的Byte()
Dim l_long As Long '要保存转化的Long
l_byte(0) = &1F
l_byte(1) = &2F
l_byte(2) = &3F
l_byte(3) = &4F
l_long = "&H" & (CStr(Hex(l_byte(0))) & CStr(Hex(l_byte(1)))) & CStr(Hex(l_byte(2))) & CStr(Hex(l_byte(3)))
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