C / C++ / MFC

Chuck O'Toole wrote:

1) does the BEGIN_MESSAGE_MAP() have the proper chain of derived and parent
classes.

Chuck O'Toole wrote:

2) does the IDCs of the controls you are expecting map properly to the controls
in the dialog you are displaying? I have seen things work by accident because
older versions of Visual Studio allowed duplicate IDCs in separate dialogs but
the code didn't expect that. Verify then against Resource.h.

Chuck O'Toole wrote:

3) are controls subclassed properly with DDX (if doing that)

BEGIN_MESSAGE_MAP(A_Dlg, B_Dlg)
    //{{AFX_MSG_MAP(A_Dlg)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

BEGIN_MESSAGE_MAP(B_Dlg, C_Dlg)
    //{{AFX_MSG_MAP(B_Dlg)
    ON_BN_CLICKED(IDC_MYBUTTON, OnMyButton)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

The first argument names the class to which the message map belongs. The second argument provides a connection with the immediate base class — CView here — so the framework can search its message map, too.

The message handlers provided in a base class are thus inherited by the derived class. This is very similar to normal virtual member functions without needing to make all handler member functions virtual.

If no handler is found in any of the base-class message maps, default processing of the message is performed. If the message is a command, the framework routes it to the next command target. If it is a standard Windows message, the message is passed to the appropriate default window procedure.

BEGIN_MESSAGE_MAP(B_Dlg, C_Dlg)
    //{{AFX_MSG_MAP(B_Dlg)
    ON_BN_CLICKED(IDC_ONE, OnFunctionA)
    ON_BN_CLICKED(IDC_TWO, OnFunctionA)
    ON_BN_CLICKED(IDC_THREE, OnFunctionA)
    ON_BN_CLICKED(IDC_FOUR, OnFunctionB)
    ON_BN_CLICKED(IDC_FIVE, OnFunctionC)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

ON_BN_CLICKED(IDC_MYBUTTON, OnMyButton)

ON_BN_CLICKED(IDC_MYBUTTON, &CYourClass::OnMyButton)

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{

   //Create the XmlDocument.
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<bookstore><book genre='novel' ISBN='1-861001-57-5'><title>Pride And Prejudice</title></book></bookstore>" );

   //Create another XmlDocument which holds a list of books.
   XmlDocument^ doc2 = gcnew XmlDocument;
   doc2->Load( "books.xml" );

   //Import the last book node from doc2 into the original document.
   XmlNode^ newBook = doc->ImportNode( doc2->DocumentElement->LastChild, true );
   doc->DocumentElement->AppendChild( newBook );
   Console::WriteLine( "Display the modified XML..." );
   doc->Save( Console::Out );
}