c++(/clr)非托管类型和托管类型互转
以下代码必须有“Common Language Runtime Support(/clr)” 和“MFC”支持
1. 字符窜之间的转换
1 // 托管类型到非托管类型
2 inline CString ManageToUnManageStr(System::String^ cmStr)
3 {
4 using namespace System::Runtime::InteropServices;
5 CString cStr = (char*)(Marshal::StringToHGlobalAnsi(cmStr)).ToPointer();
6 return cStr;
7 }
8
9 // 非托管类型到托管类型
10 inline System::String^ UnManageToManageStr(const CString& cStr)
11 {
12 const char* cc = (LPCTSTR)cStr;
13 System::String^ cmStr = gcnew System::String(cc);
14 return cmStr;
15 }
2. 对象之间的转换
1 // _variant_t到Object对象
2 inline System::Object^ VarToObject(_variant_t var)
3 {
4 using namespace System::Runtime::InteropServices;
5 System::IntPtr^ pvar = gcnew System::IntPtr(&var);
6 System::Object^ obj = Marshal::GetObjectForNativeVariant(*pvar);
7 return obj;
8 }
9
10 // Object对象到_variant_t
11 inline _variant_t* ObjectToVar(System::Object^ obj)
12 {
13 using namespace System::Runtime::InteropServices;
14 _variant_t* vt = new _variant_t();
15 System::IntPtr^ pvar = (gcnew System::IntPtr((void*)vt));
16 Marshal::GetNativeVariantForObject(obj,*pvar);
17 return vt;
18 }
更多：请参考.net库 System.Runtime.InteropServices 命名空间下的类，特别是 Marshal 类。
