error C2712: Cannot use __try in functions that require object unwinding_C/C++_编程开发_程序员俱乐部

原文：http://social.msdn.microsoft.com/Forums/en/vcgeneral/thread/42985583-36fb-4e14-8642-bd837aac0727

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I have a code that is called on a pointer that may be invalid (I have no control over its value):

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__try
{
  CString str = (LPCTSTR)wParam;

  //Work with 'str' now
}
__except(1)
{
  //Memory fault
}

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But when I try to use it in a MFC project, it gives me this error:

error C2712: Cannot use __try in functions that require object unwinding

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解决方法：

__try
{
? DoStuffWithWParam(wParam);
}
__except(1)
{
? //Memory fault
}

void DoStuffWithWParam(WPARAM wParam) {

CString str = (LPCTSTR)wParam;

? //Work with 'str' now
}