我有一个遗留的VB6应用程序,它定义了以下结构：
Public Type DrawDown
Date As Date
Amount As Currency
CapitaliseInterest As Boolean
End Type
使用tlbimp.exe生成互操作程序集,但结构最终如下：
[StructLayout(LayoutKind.Sequential,Pack = 4)]
public struct DrawDown
{
public DateTime Date;
[MarshalAs(UnmanagedType.Currency)]
public decimal Amount;
public short CapitaliseInterest;
}
我正在使用.NET 4.0.
为什么VB6布尔值被转换为C#short而不是bool？
解决方法
VB6使用VARIANT_BOOL类型,
在这里找到关于它的信息和历史：BOOL vs. VARIANT_BOOL vs. BOOLEAN vs. boo
Off to the side came VARIANT_BOOL.
typedef short VARIANT_BOOL; define VARIANT_TRUE ((VARIANT_BOOL)-1) define VARIANT_FALSE ((VARIANT_BOOL)0) This was developed by the Visual Basic folks. Basic uses -1 to represent “true” and 0 to represent “false”,and VARIANT_BOOL was designed to preserve this behavior.
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