CDialog::ONpaint()
void CinitpassDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // 用于绘制的设备上下文

SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

// 使图标在工作区矩形中居中
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;

// 绘制图标
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
CFont *font = new CFont;
font->CreateFontW(200,0,0,0,700,0,0,0,0,OUT_DEVICE_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,DEFAULT_PITCH,_T("Aril"));
GetDlgItem(IDC_STATIC)->SetFont(font);
GetDlgItem(IDC_STATIC)->SetWindowTextW(L"PASS");
CRect rect;
CPaintDC dc(this);
GetClientRect(rect);
dc.FillSolidRect(rect,RGB(0,255,0));

}
是可以示出PASS,但是改色不能成功，但是如果CRect rect;
CPaintDC dc(this);
GetClientRect(rect);
dc.FillSolidRect(rect,RGB(0,255,0));
句加到CDialog::OnPaint()前面，或者是屏蔽掉CDialog::OnPaint()一句就可以示出色。而且CDialog::OnPaint也只是用父的OnPaint()函而已，怎出象。
[解决办法]
在背景函数里改颜色OnEraseBkgnd