void CImageCtrl::OnDraw(
CDC* pDC, const CRect& rcBounds, const CRect& /*rcInvalid*/)
{
if (m_bitprop.m_Bitmap.m_hObject != NULL)
{
CWindowDC screenDC(NULL);
CDC dc;
dc.CreateCompatibleDC(&screenDC);
CBitmap* pBitmap = dc.SelectObject(&m_bitprop.m_Bitmap);
int cx(min(rcBounds.Width(), m_bitprop.m_BitmapSize.cx));
int cy(min(rcBounds.Height(), m_bitprop.m_BitmapSize.cy));
pDC->BitBlt(rcBounds.left, rcBounds.top, cx, cy, &dc, 0, 0, SRCCOPY);
if (cx < rcBounds.Width())
pDC->PatBlt(cx, rcBounds.top, rcBounds.Width() - cx, rcBounds.Height(), BLACKNESS);
if (cy < rcBounds.Height())
pDC->PatBlt(rcBounds.left, cy, rcBounds.Width(), rcBounds.Height() - cy, BLACKNESS);
if (!IsOptimizedDraw())
{
// The container does not support optimized drawing.
// So, we'll have to clean up what we did to the DC
dc.SelectObject(pBitmap);
}
}
else
{
pDC->PatBlt(rcBounds.left, rcBounds.top,
rcBounds.Width(), rcBounds.Height(), BLACKNESS);
}
}
void CXCardOCXCtrl::OnDraw(
CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid)
{
// TODO: Replace the following code with your own drawing code.
pdc->FillRect(rcBounds, CBrush::FromHandle((HBRUSH)GetStockObject(WHITE_BRUSH)));
pdc->Ellipse(rcBounds);
if (!IsOptimizedDraw())
{
// The container does not support optimized drawing.
// TODO: if you selected any GDI objects into the device context *pdc,
// restore the previously-selected objects here.
// For more information, please see MFC technical note #nnn,
// "Optimizing an ActiveX Control".
}
}
void CEasyPDFCtrl::OnDraw(
CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid)
{
if (!pdc)
return;
// TODO: 用您自己的绘图代码替换下面的代码。
/*pdc->FillRect(rcBounds, CBrush::FromHandle((HBRUSH)GetStockObject(WHITE_BRUSH)));
pdc->Ellipse(rcBounds);*/
if (!IsOptimizedDraw())
{
// 容器不支持优化绘图。
// TODO: 如果将任何 GDI 对象选入到设备上下文 *pdc 中，
// 请在此处恢复先前选定的对象。
}
}