怎样能使ListBox里显示一幅图片?

zoulie 2005-12-23 10:03:23

我在对话框里响应WM_CTLCOLOR消息,在OnCtlColor()用StretchBlt显示位图怎么不显示?

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lixiaosan 2005-12-23

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http://www.codeguru.com/cpp/controls/listbox/article.php/c4753/

zoulie 2005-12-23

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怎么没人回答啊??

zoulie 2005-12-23

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多谢各位,我已经解决了,结贴.

tianpuf 2005-12-23

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具体可见
http://www.vckbase.com/document/viewdoc/?id=400

void CMyListBox::OnSelchange()
{
iSelectChange = TRUE;
}

void CMyListBox::OnLButtonDown(UINT nFlags, CPoint point)
{
if(iSelectChange)
{
iSelectChange= FALSE;
Invalidate();
}
CListBox::OnLButtonDown(nFlags, point);
}

//设置画刷，背景模式，文字颜色HBRUSH CMyListBox::CtlColor(CDC* pDC, UINT nCtlColor)
{
pDC->SetBkMode(TRANSPARENT); //设置背景模式透明
pDC->SetTextColor(RGB(64,32,0));//设置文字颜色；
return m_brHollow; //设置空心画刷；
}
//在垂直滚动时刷新；void CMyListBox::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
Invalidate();
CListBox::OnVScroll(nSBCode, nPos, pScrollBar);
}
//在水平滚动时刷新；void CMyListBox::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
Invalidate();
CListBox::OnHScroll(nSBCode, nPos, pScrollBar);
}

//将背景位图画出来； BOOL CMyListBox::OnEraseBkgnd(CDC* pDC)
{
BITMAP bm;
m_bmp.GetBitmap(&bm);
m_pbmCurrent = &m_bmp;
CDC dcMem;
dcMem.CreateCompatibleDC(pDC);
CBitmap* pOldBitmap = dcMem.SelectObject(m_pbmCurrent);
pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&dcMem,0,0,SRCCOPY);
dcMem.SelectObject(pOldBitmap);
return CListBox::OnEraseBkgnd(pDC);

Featured 2005-12-23

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这个不行的，需要自绘才会

zoulie 2005-12-23

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以下是我写的代码，好象只闪了一下就不见了？
HBRUSH CAboutDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

if(pWnd->GetDlgCtrlID()==IDC_LIST1)
{
CListBox *ptr;
CImageList list;
ptr=(CListBox*)GetDlgItem(IDC_LIST1);

CBitmap m_bit;
m_bit.LoadBitmap(IDB_BITMAP2);
BITMAP bm;
m_bit.GetBitmap(&bm);

CDC mCombit;
mCombit.CreateCompatibleDC(pDC);
mCombit.SelectObject(&m_bit);

CRect rect;
ptr->GetClientRect(rect);
pDC->SetBkMode(TRANSPARENT );
pDC->StretchBlt(0,0,rect.Width(),rect.Height(),&mCombit,0,0,bm.bmWidth,bm.bmHeight,SRCCOPY );

return m_brush;

}

return m_brush;
}

小猿高飞 2005-12-23