if ( openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK ) // error in this line
	    {
			
		  	 

		  //System::String^ file = openFileDialog1->FileName;
		  
		  

		cli::array<System::String^,1>^file1 = openFileDialog1->FileNames;
		img = gcnew cli::array<IplImage*,1>(file1->Length);
  
		MessageBox::Show("Tamanho de File1: "+file1->Length);
		 
		  for(int i = 0;i < file1->Length; i++)
		  {
		  // cast de System::String^ para char*
		  char* str2 = (char*)Marshal::StringToHGlobalAnsi(file1[i]).ToPointer(); 
		  

		 
		  img[i]=cvLoadImage(str2,1); 
		 
		  }

		pictureBox1_Click(sender,e);
	
	  
	  }