如何控制在取消，暂停，返回时显示的插页式广告

Question

当我点击返回或暂停或取消显示的广告时，我有一个游戏，当玩家死亡时，我想控制展示广告。每次游戏结束后，插页式广告都会展示。

这是我处理广告的课程：

#include "image-processing.h"

void compute_edge_map_via_lab(cv::Mat image, cv::Mat edge_map) {
int rows = image.rows;
int cols = image.cols;

//convert bgr to lab
cv::Mat image_lab;
cv::cvtColor(image, image_lab, CV_BGR2Lab);

//split lab
std::vector<cv::Mat> image_lab_split(3);
cv::split(image_lab, image_lab_split);

//run sobel x and y on lab sets
std::vector<cv::Mat> image_lab_split_dx(3), image_lab_split_dy(3);
for (int i = 0; i < 3; i++)
{
    cv::Sobel(image_lab_split[i], image_lab_split_dx[i], CV_32FC1, 1, 0, 3);
    cv::Sobel(image_lab_split[i], image_lab_split_dy[i], CV_32FC1, 0, 1, 3);
}

//-----------------------------------------------------------------------------
//compute magnitude = term_a            + term_b
//                  = sqrt(Lx^2 + Ly^2) + sqrt(2(ax^2 + ay^2 + bx^2 + by^2))
//-----------------------------------------------------------------------------

//compute sqrt(Lx^2 + Ly^2)
cv::Mat Lx_squared = cv::Mat(cv::Size(cols, rows), CV_32FC1),
    Ly_squared = cv::Mat(cv::Size(cols, rows), CV_32FC1);
cv::pow(image_lab_split_dx[0], 2, Lx_squared);
cv::pow(image_lab_split_dy[0], 2, Ly_squared);

//compute term_a
cv::Mat term_a = cv::Mat(cv::Size(cols, rows), CV_32FC1);
term_a = Lx_squared + Ly_squared;
cv::sqrt(term_a, term_a);

//compute sqrt(2(ax^2 + ay^2 + bx^2 + by^2))
cv::Mat ax_squared = cv::Mat(cv::Size(cols, rows), CV_32FC1),
    ay_squared = cv::Mat(cv::Size(cols, rows), CV_32FC1),
    bx_squared = cv::Mat(cv::Size(cols, rows), CV_32FC1),
    by_squared = cv::Mat(cv::Size(cols, rows), CV_32FC1);
cv::pow(image_lab_split_dx[1], 2, ax_squared);
cv::pow(image_lab_split_dy[1], 2, ay_squared);
cv::pow(image_lab_split_dx[2], 2, bx_squared);
cv::pow(image_lab_split_dy[2], 2, by_squared);

//compute term_b
cv::Mat term_b = 2 * (ax_squared + ay_squared + bx_squared + by_squared);
cv::sqrt(term_b, term_b);

//compute magnitude
edge_map = term_a + term_b;
}

void compute_local_minima(cv::Mat magnitude, cv::Mat markers) {

}

非常感谢