c++ - OpenCV window in fullscreen and without any borders

Question

In OpenCV when displaying an image with:

cvSetWindowProperty("displayCVWindow", CV_WND_PROP_FULLSCREEN, 
CV_WINDOW_FULLSCREEN);

There is a small border around the full screened window if anyone ever noticed. Is there a way to get a rid of this?

Screenshot showing border of window when in full screen mode. Note: the screenshot was cropped to show only top-left corner

Answer 1

OpenCV does not provide this capability.

If you want to have the image in fullscreen mode or floating around without window/borders you will have 2 choices:

• Hack the window created by OpenCV;

• Create the window yourself using native API calls.

If you decide to hack the window, you may try this code and replace the SetWindowLong() call for:

SetWindowLong(win_handle, GWL_STYLE, 0;

If that doesn't work, you'll have to dig a little deeper into window creation on Windows.