win7的测试机台复制不到现象,不知道是何原因
win server 2008 DEP设定为Turn on DEP for essential Windows Programs and services only仍然会有问题
另外我手上还有机台win server 2012的,都可以正常work
代码大概是这样的
void CMyTabCtrl::OnPaint()
{
PAINTSTRUCT ps;
HDC hDC=::BeginPaint(this->GetSafeHwnd(),&ps);
CDC *pDc=CDC::FromHandle(hDC);
InitBackground(pDc);
...
...
::EndPaint(this->GetSafeHwnd(),&ps);
}
void CMyTabCtrl::InitBackground(CDC* pDc)
{
//init CMyTabCtrl::cbitmap
if(cbitmap.m_hObject == NULL)
{
CRect crect;
this->GetWindowRect(&crect);
::AfxGetMainWnd()->ScreenToClient(crect);
HBITMAP hbm = CImageRes::CopyBitmap((HBITMAP)(pDc->GetCurrentBitmap())->m_hObject
, crect);
cbitmap.Attach(hbm);
}
}
void CMyTabCtrl::MyDrawBackGround(CDC* pDc, CRect wRect)
{
if(cbitmap.m_hObject != NULL)
{//drawbackground
CDC dcMemoryback;
dcMemoryback.CreateCompatibleDC(pDc);
SelectObject(dcMemoryback,cbitmap);
pDc->BitBlt(0, 0, wRect.Width(), wRect.Height(), &dcMemoryback,
0, 0, SRCCOPY);
dcMemoryback.DeleteDC();
}
}
BOOL CMyTabCtrl::OnEraseBkgnd(CDC* pDC)
{
CRect wRect;
this->GetWindowRect(&wRect);
this->ScreenToClient(wRect);
MyDrawBackGround(pDC,wRect);
return 1;
//return CTabCtrl::OnEraseBkgnd(pDC);
}
