c++ callback 函数转 c#

Question

这是c++的回调函数：
// Callback functions. 
void SetMessageProcessCallback(void* pUserObject_, void (*pfUserMessageProcessFunc_)(void*,AMC_MESG*)); __fastcall TFormProprioWare::TFormProprioWare(TComponent* Owner) 
{ 
  SetMessageProcessCallback((void *)this, &MesgProcessCallback); 
} void MesgProcessCallback(VOID* MyObjPtr, AMC_MESG* pclMesg_) 
{ 
  ((TFormProprioWare*)MyObjPtr)->ProcessMesg(pclMesg_); 
} void TFormProprioWare::ProcessMesg(AMC_MESG *pclMesg_) 
{}下面是我转的代码：
[DllImport(Constant.Dllname_amc)]
public extern static void SetMessageProcessCallback(object sender, SetMessageCallback DelegateFunc); 
[DllImport(Constant.Dllname_amc)]
public extern static void SetByteProcessCallback(object sender, SetByteCallback DelegateFunc); public delegate void SetMessageCallback(object sender, ref AMC_MESG amc); 
public delegate void SetByteCallback(object sender,byte ucByte); SetMessageCallback callback1 = ProcessCallback.MesgProcessCallback; 
SetByteCallback callback2 = ProcessCallback.ByteProcessCallback; 
            
SetMessageProcessCallback(this, callback1); 
SetByteProcessCallback(this, callback2); public static void MesgProcessCallback(object sender, ref AMC_MESG amc)
{} 
 public static void ByteProcessCallback(object sender,byte ucByte_){} 
可当控件的属性被修改时，这两个回调函数MesgProcessCallback 和 ByteProcessCallback 并不执行，请高手帮忙。
我想是不是动态库Constant.Dllname_amc没有被倒入内存中，所以它里面的线程没有启动的原因？？？