Obligatory - I'm a newbie. Have a job that involves programming and I'm teaching myself as I go. Needless to say as a teacher I get things wrong frequently and thoroughly.
Where I'm at right now: I've created the class "Graph", it (surprisingly enough) makes graphs. But now I want to make it so that on a mouse click I modify the graph. But I can't seem to get a mouse handler to be a member function of the class.
cv::setMouseCallback(windowName, onMouse, 0); // Set mouse handler to be onMouse
Doesn't work with
cv::setMouseCallback(windowName, Graph::onMouse, 0);
It gives me lack of parameter errors. According to this I can't make it a member function. After following the answer given, it compiles but my this pointer is nulled. Ugh.
OnMouse looks like this:
void onMouse(int event, int x, int y,int, void*)
{
if (event == CV_EVENT_LBUTTONDOWN)
{
cvMoveWindow("Window", 500, 500); //Just to see if stuff happened
}
return;
}
I don't care about moving the window, I want to modify the graph itself - which is stored as a cv::Mat variable in a Graph object. And I can't figure out how to do it.
Any help would be appreciated, and I really hope this wasn't just gibberish.