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   <TITLE>Controls - Using the GridCtrl in a View</TITLE>
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<CENTER><H3><FONT COLOR="#AOAO99">
Using the GridCtrl in a View
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This article was contributed by <A HREF="mailto:Chris.Maunder@cbr.clw.csiro.au">Chris Maunder</A>.

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<p>Download <A HREF="gridctrl_in_view.zip">demo project</A>.

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<p>I have had many, MANY questions asking how to use my <a href="gridctrl.shtml">MFC grid control</a>
in a view instead of in a dialog, so hopefully this will help.

<p>The easiest way as I see it is as follows:

<ol>
<li>Add a member variable of type CGridCtrl* to your view class:

<FONT COLOR="#990000"><TT><PRE>CGridCtrl* m_pGrid;
</tt></PRE></FONT>
<br>

<li>Initialise this to NULL in your view class' constructor:

<FONT COLOR="#990000"><TT><PRE>CMyView::CMyView
{
    m_pGrid = NULL;
}
</tt></PRE></FONT>
<br>

<li>In the CView function OnInitialUpdate, create a new CGridCtrl object if the m_pGrid
is not NULL, and then create the CGridCtrl window:

<FONT COLOR="#990000"><TT><PRE>CMyView::OnInitialUpdate
{
    CView::OnInitialUpdate();

    if (m_pGrid == NULL)                    // Have we already done this bit?
    {
        m_pGridCtrl = new CGridCtrl;        // Create the Gridctrl object
        if (!m_pGridCtrl) return;

        CRect rect;                         // Create the Gridctrl window
        GetClientRect(rect);
        m_pGridCtrl->Create(rect, this, 100);

        m_pGridCtrl->SetRowCount(50);        // fill it up with stuff
        m_pGridCtrl->SetColumnCount(10);
        
        // ... etc
    }
}
</tt></PRE></FONT>

<p>This allows the view to be reused (eg SDI situations).
<br><br>

<li>We want the grid to take up the whole of the view's client space, so add a handler to
the WM_SIZE message for the view and edit the OnSize function thus:
<FONT COLOR="#990000"><TT><PRE>CMyView::OnSize(UINT nType, int cx, int cy) 
{
    CView::OnSize(nType, cx, cy);
    
    if (m_pGrid->GetSafeHwnd())     // Have the grid object and window been created yet?
    {
        CRect rect;
        GetClientRect(rect);        // Get the size of the view's client area
        m_pGrid->MoveWindow(rect);  // Resize the grid to take up that space.
    }
}
</tt></PRE></FONT>

<li>Remember to delete the object when you are done:
<FONT COLOR="#990000"><TT><PRE>CMyView::~CMyView
{
    if (m_pGrid)
        delete m_pGrid;
}
</tt></PRE></FONT>

</ol>

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<p>Last updated: 20 May 1998

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<CENTER><FONT SIZE=-2>&copy; 1998 Zafir Anjum</FONT>&nbsp;</CENTER>
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