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	private: System::Void bt_sbHelloParam_Click(System::Object^  sender, System::EventArgs^  e) {
 
				typedef  wchar_t* (__stdcall *fct_sbHelloParam)(wchar_t* Input, wchar_t* Output);
				fct_sbHelloParam fsbHelloParam;
 
				fsbHelloParam = (fct_sbHelloParam)GetProcAddress(hInstLibrary, "_sbHelloParam");
				if (fsbHelloParam){
					IntPtr p =  System::Runtime::InteropServices::Marshal::StringToHGlobalUni(tbParam->Text->ToString());
					wchar_t* Input = static_cast<wchar_t*>(static_cast<void *>(p));
					wchar_t* Output = new wchar_t;
					fsbHelloParam(Input, Output);		
					this->tbLog->Text += "res="+gcnew String(Output)+ "\r\n";
					delete Output;
				}else{
					this->tbLog->Text += "GetProcAddress for _sbHelloParam failed !" + "\r\n";
				}
 
		 } | 
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