3.5" TFT shield MCUFRIEND MEGA.
i got my screens switching back and forth fine, as long as only buttons occupy the screens.
but as soon as i make one of the screens a graph that occupies the entire display, the back button that is also on the display doesn't respond anymore.
i'm guessing that the area being pressed is already defined by the graph. i have tried placing the button before the drawing of the graph, and after it. but still no response.
the same back button works on other screens that don't have the display covered by a graph.
is there a way i can make the 'back' button area superceed the graph area ? or maybe another approach.