c++线程有关问题

c++线程问题
最近研究线程好蛋疼，创建了这样的一个类，参考了MSDN还是出错，求救啊

C/C++ code

#include <Windows.h>using namespace System::Windows::Forms; class yThread { public:     void start();  protected:     DWORD WINAPI ThreadProc(LPVOID lpParameter); }; void yThread::start() {     HANDLE hwn1;     hwn1 =CreateThread(NULL,0,ThreadProc,0,0,NULL); } DWORD WINAPI yThread::ThreadProc(LPVOID lpParameter ) {     MessageBox::Show("!");     return 0 ; }

编译错误
1>------ Build started: Project: tests, Configuration: Debug Win32 ------
1>Build started 2012/7/22 21:47:07.
1>InitializeBuildStatus:
1> Touching "Debug\tests.unsuccessfulbuild".
1>GenerateTargetFrameworkMonikerAttribute:
1>Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files.
1>ClCompile:
1> All outputs are up-to-date.
1> tests.cpp
1>c:\files\编程\visual studio projects\tests\tests\myThread.h(16): error C3867: 'yThread::ThreadProc': function call missing argument list; use '&yThread::ThreadProc' to create a pointer to member
1>c:\files\编程\visual studio projects\tests\tests\myThread.h(9): error C3641: 'yThread::ThreadProc' : invalid calling convention '__stdcall ' for function compiled with /clr:pure or /clr:safe
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:00.43
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

------解决方案--------------------------------------------------------
线程函数定义为static
------解决方案--------------------------------------------------------
还有，你不能用/clr:pure 或者 /clr:safe 方式，使用非托管api
既然用托管，为何不用
System::Threading