C# - 如何封送 LPWSTR 数组？
我正在尝试编组一个如下所示的 C++ 结构：
typedef struct _SOME_STRUCT
{
DWORD count;
LPWSTR *items;
}
“items”是 LPWSTR 的数组（确切的数字由“count”表示）。在 C# 中，我将结构表示为：
[StructLayoutAttribute(LayoutKind.Sequential)]
internal struct SOME_STRUCT
{
internal uint count;
internal IntPtr items;
}
然后在我的代码中，我正在执行类似的操作（其中 mystruct 的类型为 SOME_STRUCT）：
if (mystruct.count > 0)
{
for (int x = 0; x < mystruct.count; x++)
{
IntPtr ptr = new IntPtr(mystruct.items.ToInt64() + IntPtr.Size * x);
string item = Marshal.PtrToStringAnsi(Marshal.ReadIntPtr(ptr));
}
}
计数是正确的，但字符串项出现乱码。我确信我一定做了一些愚蠢的事情，因为我之前已经对其他类型的数组进行过这项工作......只是不是 LPWSTR。
I am trying to marshal a c++ struct that looks like the following:
typedef struct _SOME_STRUCT
{
DWORD count;
LPWSTR *items;
}
"items" is an array of LPWSTR's (the exact number is indicated by "count"). In C# I am representing the struct as:
[StructLayoutAttribute(LayoutKind.Sequential)]
internal struct SOME_STRUCT
{
internal uint count;
internal IntPtr items;
}
Then in my code I am doing something like this (where mystruct is of type SOME_STRUCT):
if (mystruct.count > 0)
{
for (int x = 0; x < mystruct.count; x++)
{
IntPtr ptr = new IntPtr(mystruct.items.ToInt64() + IntPtr.Size * x);
string item = Marshal.PtrToStringAnsi(Marshal.ReadIntPtr(ptr));
}
}
The count is correct, but the string item is coming out garbled. I'm sure I must be doing something daft as i've had this work before with arrays of other types...just not LPWSTR.
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LPWSTR 是一个“宽”字符串，即 Unicode。 PtrToStringUni 可能会更适合您。
另外，IntPtr 确实重载了 + 运算符，您应该能够执行 IntPtr ptr = mystruct.items + (IntPtr.Size * x) 操作
LPWSTR is a 'wide' string, i.e., Unicode. PtrToStringUni will probably work better for you.
Also, IntPtr does have the
+operator overloaded, you should be able to doIntPtr ptr = mystruct.items + (IntPtr.Size * x)