Re: Opening a new window from the main window
<fred.zakity@gmail.com> wrote in message
news:1175279562.547821.140900@p15g2000hsd.googlegroups.com...
I am trying to open a new window from the main window in MFC.
I would like to launch a new window from the main window using a menu
selection on the main window. The secondary window should be of the
same type as the main window. I want the secondary window to draw a
graph in. Can this be done in MFC? A few people I have spoken to have
told me that it's not possible and that one must use a (modeless)
dialog box or some other type of window for the secondary window. Help
appreciated.
fred.
You mean you want to create a second instance of your CMainFrame?
Normally you can do this by doing:
CMainFrame *pNewMainFrame = new CMainFrame;
pNewFrame->Create(...);
But since this is the main window it could be a little harder:
1. If you look in InitInstance(), it creates the mainframe in a different,
MFC-specific way. I'm not sure creating the second instance by copying the
code will work.
2. CWinApp::m_pMainWnd can only be set to one value. You probably want to
leave it set to the first instance. This controls, for example, that when
this window is closed, the app shuts down too. But there are some other
things about CFrameWnd that I've run into over the years that have caused
some issues I had to workaround when creating a new instance like this.
Your mileage may very.
Sorry for being vague, but that's the best I have right now. Good luck!
-- David