在对话中为控件添加背景图片问题?

Question

本帖最后由 VisualEleven 于 2014-01-15 20:31:05 编辑

Answer 1

 重写CStatic类，在OnPaint函数中去贴图。

Answer 2

LRESULT CSYourControl::OnPaint(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
    PAINTSTRUCT stPaintStruct;
    HDC hDC = ::BeginPaint(m_hWnd, &stPaintStruct);    RECT rcDialog = { 0 };
    ::GetClientRect(m_hWnd, &rcDialog);    HDC hCacheDC = ::CreateCompatibleDC(hDC);
    HBITMAP hCacheBitmap = ::CreateCompatibleBitmap(hDC, rcDialog.right, rcDialog.bottom);
    ::SelectObject(hCacheDC, hCacheBitmap);    HBRUSH hBackBrush = ::CreateSolidBrush(RGB(255, 255, 255));
    ::FillRect(hCacheDC, &rcDialog, hBackBrush);
    ::DeleteObject(hBackBrush);    ::DrawIcon(hCacheDC, x, y, m_hYourIcon);    ::BitBlt(hDC, 0, 0, rcDialog.right, rcDialog.bottom, hCacheDC, 0, 0, SRCCOPY);    ::DeleteObject(hCacheBitmap);
    ::DeleteDC(hCacheDC);    ::EndPaint(m_hWnd, &stPaintStruct);    return 0;
}

Answer 3

BOOL CkkkStatic::OnEraseBkgnd(CDC* pDC)
{
if (m_Bmp.GetSafeHandle() == NULL)
{
CRect Rect;
GetWindowRect(&Rect);
CWnd *pParent = GetParent();
ASSERT(pParent);
pParent->ScreenToClient(&Rect); CDC *pDC = pParent->GetDC();
CDC MemDC;
MemDC.CreateCompatibleDC(pDC);
m_Bmp.CreateCompatibleBitmap(pDC,Rect.Width(),Rect.Height());
CBitmap *pOldBmp = MemDC.SelectObject(&m_Bmp); MemDC.BitBlt(0,0,Rect.Width(),Rect.Height(),pDC,Rect.left,Rect.top,SRCCOPY); MemDC.SelectObject(pOldBmp); pParent->ReleaseDC(pDC);
}
else
{
CRect Rect;
GetClientRect(Rect);
CDC MemDC;
MemDC.CreateCompatibleDC(pDC);
CBitmap *pOldBmp = MemDC.SelectObject(&m_Bmp);
pDC->BitBlt(0,0,Rect.Width(),Rect.Height(),&MemDC,0,0,SRCCOPY);
MemDC.SelectObject(pOldBmp);
} return TRUE;
}void CkkkStatic::OnNcPaint()
{
if(GetWindowLong(GetSafeHwnd(),GWL_EXSTYLE)&WS_EX_CLIENTEDGE)
{
CDC *pDC = GetWindowDC();
CRect rt;
GetWindowRect(&rt);
rt.OffsetRect(-rt.left,-rt.top); CPen pen;
rt.DeflateRect(1, 1);
pen.CreatePen(PS_SOLID,1,RGB(0, 0, 0));
CPen *pOldPen = pDC->SelectObject(&pen);
CBrush *pOldBursh = (CBrush*)pDC->SelectStockObject(NULL_BRUSH);
pDC->Rectangle(&rt);
pDC->SelectObject(pOldPen);
pDC->SelectObject(pOldBursh);
pen.DeleteObject();
}
else
{
CStatic::OnNcPaint();
}
}
重绘控件，仅供参考