Some tutorial extending of the Windows install and usage. Display Image retouching.

samples/cpp/tutorial_code/introduction/display_image/display_image.cpp

@@ -0,0 +1,30 @@
+#include <opencv2/core/core.hpp>
+#include <opencv2/highgui/highgui.hpp>
+#include <iostream>
+
+using namespace cv;
+using namespace std; 
+
+int main( int argc, char** argv )
+{
+	if( argc != 2) 
+	{
+	 cout <<" Usage: display_image ImageToLoadAndDisplay" << endl;
+	 return -1;
+	}
+	
+	Mat image;
+	image = imread(argv[1], CV_LOAD_IMAGE_COLOR);	// Read the file
+
+	if(! image.data )                              // Check for invalid input
+	{
+		cout <<  "Could not open or find the image" << std::endl ;
+		return -1;
+	}
+
+	namedWindow( "Display window", CV_WINDOW_AUTOSIZE );// Create a window for display.
+	imshow( "Display window", image );                   // Show our image inside it.
+
+	waitKey(0);											 // Wait for a keystroke in the window
+	return 0;
+}