SDI窗口，视类为CFormView,将此视类与一对话框模板相连，我怎么改变此对话框或此视类的背影色？

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有人知吗？

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WM_ERASEBACKGROUND

[xjl930]

1 先再FormView类中加入两个成员如下 ：
private:
CBrush m_brBack;
COLORREF m_crBackColor;

2 然后再视图构造函数中初始化：
CCodebarView::CCodebarView()
: CFormView(CCodebarView::IDD)
{
.....................
m_crBackColor=::GetSysColor(COLOR_BTNFACE);
m_brBack.CreateSolidBrush(m_crBackColor);
...............
}

3 用ClassWizard在FormView类中增加一个WM_CTLCOLOR消息句柄。如下：
HBRUSH CCodebarView::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CFormView::OnCtlColor(pDC, pWnd, nCtlColor);

// TODO: Change any attributes of the DC here
switch(nCtlColor)
{
case CTLCOLOR_BTN:
case CTLCOLOR_STATIC:
pDC->SetBkMode(TRANSPARENT);//failed
case CTLCOLOR_DLG:
return (HBRUSH) m_brBack.GetSafeHandle();
}
// TODO: Return a different brush if the default is not desired
return hbr;
}

4 在CMyView::OnInitialUpdate()中加入改变背景颜色的代码即可：
m_crBackColor = RGB( 0, 0, 255 );
m_brBack.DeleteObject();
m_brBack.CreateSolidBrush( m_crBackColor );