结构体数组的指针的内容如何从非托管到托管...
谢谢关注...
结构体数组的指针的内容如何从非托管到托管...
部分代码如下:
//Event是结构体struct
IntPtr pEvent = new IntPtr();
int size = Marshal.SizeOf(typeof(Event));
pEvent = Marshal.AllocHGlobal(size * 1000);
uint pReadCount = 0;
if (-1 == M8_GetEventsFromBuf(ui_IP, pEvent, (uint)(size *1000), ref pReadCount))
{
Event[] events = new Event[pReadCount];
for (int k = 0; k < pReadCount; k++)
{
events[k] = new Event();
}
IntPtr ptr = new IntPtr();
ptr = Marshal.AllocHGlobal(size);
for (int i = 0; i < pReadCount; i++)
{
ptr = Marshal.ReadIntPtr(pEvent, i * size);
//问题在这里,为何ptr = 0呢?
events[i] = (Event)Marshal.PtrToStructure(ptr, typeof(Event));
...
...
再次感谢...