<div dir="auto">I want to access the <span style="color:rgb(36,41,46);font-family:sfmono-regular,consolas,"liberation mono",menlo,courier,monospace;font-size:12px;white-space:pre-wrap;background-color:rgb(255,255,255)">isOpened()</span> function and <span style="background-color:rgb(255,255,255);color:rgb(111,66,193);font-family:sfmono-regular,consolas,"liberation mono",menlo,courier,monospace;font-size:12px;white-space:pre-wrap">externalKeyPressEvent</span><span style="background-color:rgb(255,255,255);color:rgb(36,41,46);font-family:sfmono-regular,consolas,"liberation mono",menlo,courier,monospace;font-size:12px;white-space:pre-wrap">( QKeyEvent *);</span> of  pageview.cpp in sidebar.cpp. How can I do that? </div>