Ivor Horton's Beginning Visual C++ 2012

WORKING WITH STATUS BARS

With each view now being scaled independently, there’s a real need to have some indication of what the current scale in a view window is. A convenient way to do this would be to display the scale in the status bar for each view window. A status bar was created by default in the Sketcher main application window, but not in the view windows. Usually, a status bar appears at the bottom of a window, below the horizontal scrollbar, although you can arrange for it to be at the top of the client area. A status bar is divided into segments called panes; the status bar in the main application window in Sketcher has four panes. The one on the left contains the text “Ready,” and the other three are the areas on the right that are used as indicators to record when Caps Lock, Num Lock, and Scroll Lock are in effect.

It’s possible for you to write to the status bar that the Application Wizard supplied by default, but you need access to the m_wndStatusBar member of the CMainFrame object for the application, as this represents it. It’s a protected member of the class, so you must either add a public member function that you can call from outside the class to modify the status bar, or add a member to return a reference to m_wndStatusBar.

You may well have several views of a sketch, each with its own view scale, so you really want each view window to display its own scale. A good approach would be to give each child window its own status bar. The m_wndStatusBar object in ...