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// 允许Vista/Win7下,不同权限进程间发送消息:WM_COPYDATA
typedef BOOL (WINAPI FAR *ChangeWindowMessageFilter_PROC)(UINT,DWORD);
ChangeWindowMessageFilter_PROC m_pfnChangeWindowMessageFilter;
m_pfnChangeWindowMessageFilter =
(ChangeWindowMessageFilter_PROC)::GetProcAddress (::GetModuleHandle(_T("USER32")),"ChangeWindowMessageFilter");
if (m_pfnChangeWindowMessageFilter)
{
m_pfnChangeWindowMessageFilter(WM_COPYDATA, 1/*Add*/);
}