I believe your changes mean that your database handler pDoc->m_db
wasn't open before the call to CMainView::myUpdateView() despite you
thought so.
Pavel
On Mon, Sep 28, 2009 at 9:12 AM, meng wei <willgu...@gmail.com> wrote:
> THANKS VERY MUCH for so exhaustive reply! :-)
>
> I made my program run before I saw your reply, but I can't understand
> how it works.
>
> The problem seems to be caused by the 1st parameter of sqlite3_exec.
> sqlite3_exec(pDoc->m_db,pDoc->m_strSQL,sqlCallback_UpdateList , 0,
> &(pDoc->m_pErrMsg));
> I changed "pDoc->m_db" and it works.Just like this:
>
> void CMainView::myUpdateView()
> {
> CSenateSystemDoc* pDoc = GetDocument();
> sqlite3_open("SenateSystem", &db);
>
> sqlite3_exec(db,pDoc->m_strSQL,sqlCallback_UpdateList , 0,
> &(pDoc->m_pErrMsg));
> //formerly "sqlite3_exec(pDoc->*m_db*,"select * from table1",
> sqlCallback_UpdateList, 0, &(pDoc->*m_pErrMsg*));"
> sqlite3_close(db);
> db = 0;
> }
>
> I haven't made any changes to callback function ,but it works. Why?
>
> And why using a "sqlite3*" declared in another class(here pDoc->*m_db*)
> will fail?
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