To use the code just call createWindow instead of cv::namedWindow.

If they match, then I bring it to front ( ). For every window ( ) I get its title ( ) convert it to C string ( ) and compare it to the name of the window. After getting the pointer of the main application I get the list of all windows ( ) and iterate through them ( ). I get an instance of NSApplication class by calling the C equivalent of. I use Objective-C runtime functions to send Objective-C messages. First I create the OpenCV window with cv::namedWindow. I added #ifdef _APPLE_ so that the code get’s compilet only on macOS. Reinterpret_cast(&objc_msgSend)(window, sel_getUid('orderFrontRegardless')) // Id title = reinterpret_cast(&objc_msgSend)(window, sel_getUid('title')) // Ĭonst char* titleString = reinterpret_cast(&objc_msgSend)(title, sel_getUid('UTF8String')) // NSUInteger windowCount = reinterpret_cast(&objc_msgSend)(windows, sel_getUid('count')) // įor (NSUInteger i = 0 i (&objc_msgSend)(windows, sel_getUid('objectAtIndex:'), i) // OpenCV is a library of Programming functions which are used in real-time Computer Vision. Id windows = reinterpret_cast(&objc_msgSend)(application, sel_getUid('windows')) // Id application = reinterpret_cast(&objc_msgSend)(applicationClass, sel_getUid('sharedApplication')) //

Inline void createWindow(const std::string& name)Ĭlass applicationClass = objc_getClass('NSApplication') Let’s start with the code: #ifdef _APPLE_

Later we install the OPENCV plugin and test it out. So I created a helper function that does just that. In this tutorial we learn how to install PYTHON and PYCHARM. The biggest problem I encountered with OpenCV windows on macOS is that they never open on top of my current window when an application using OpenCV is launched.

Open cv for windows or mac