My Own Edit Box(VC++)

We will see here how to create an Edit Box which say disallows CUT+COPY+PASTE

The normal class CEdit does not have API corresponding to this so this essentially requires subclassing

Say we have a Dialog CNoCutCopyPasteDialog

and we have a control IDC_EDIT1 which is an EDIT BOX....

We will have to route all messages coming to the IDC_EDIT1 control to our own class so that we can trap them in the way we want.

This is simple enough.
In DO Data Exchange of the CNoCutCopyPasteDialog
add
DDX_Control(pDX, IDC_EDIT1, m_Edit1);

What this effectively does is routes all messages coming to IDC_EDIT1 to the object m_Edit1.

Create a new class CMyEdit derived from CEdit
Declare CMyEdit m_Edit1 in the CNoCutCopyPasteDialog

In the CMyEdit class add the message handler

LRESULT CMyEdit::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
// TODO: Add your specialized code here and/or call the base class

if((WM_PASTE==message)||
(WM_COPY==message)||
(WM_COPY==message))
{
MessageBox("U cannot paste here",NULL,MB_OK);
return 0L;
}
else
{
return CEdit::WindowProc(message,wParam,lParam);
}

}

This means that all Edit box messages are routed to CMyEdit class and CUT,COPY,PASTE messages are handled all other messages are returned to the parent CEdit class