WinRT support

Detailed Description

This figure explains new functionality implemented with WinRT GUI. The new GUI provides an Image control, and a slider panel. Slider panel holds trackbars attached to it.

Sliders are attached below the image control. Every new slider is added below the previous one.

See below the example used to generate the figure:

void sample_app::MainPage::ShowWindow()
{
    static cv::String windowName("sample");
    cv::winrt_initContainer(this->cvContainer);
    cv::namedWindow(windowName); // not required
 
    cv::Mat image = cv::imread("Assets/sample.jpg");
    cv::Mat converted = cv::Mat(image.rows, image.cols, CV_8UC4);
    cv::cvtColor(image, converted, COLOR_BGR2BGRA);
    cv::imshow(windowName, converted); // this will create window if it hasn't been created before
 
    int state = 42;
    cv::TrackbarCallback callback = [](int pos, void* userdata)
    {
        if (pos == 0) {
            cv::destroyWindow(windowName);
        }
    };
    cv::TrackbarCallback callbackTwin = [](int pos, void* userdata)
    {
        if (pos >= 70) {
            cv::destroyAllWindows();
        }
    };
    cv::createTrackbar("Sample trackbar", windowName, &state, 100, callback);
    cv::createTrackbar("Twin brother", windowName, &state, 100, callbackTwin);
}

Functions
void	cv::winrt_initContainer (::Windows::UI::Xaml::Controls::Panel^ container)
	Initializes container component that will be used to hold generated window content.

Function Documentation

winrt_initContainer()

void cv::winrt_initContainer

(

::Windows::UI::Xaml::Controls::Panel^

container

)

#include <opencv2/highgui/highgui_winrt.hpp>

Initializes container component that will be used to hold generated window content.

Parameters

container

Container (Panel^) reference that will be used to hold generated window content: controls and image.

Note

Must be called to assign WinRT container that will hold created windows content.