002
22.10.2006, 15:14 Uhr
xXx
Devil
|
Hmm k
| C++: |
bool dataPictureCtrl::LoadImage(LPCBYTE lpbyData, unsigned long dwLen)
{
if (lpbyData == NULL)
return false;
if (m_pImage != NULL)
{
delete m_pImage;
m_pImage = NULL;
}
LPVOID lpData = NULL;
HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, dwLen);
if (hGlobal == NULL)
return false;
lpData = GlobalLock(hGlobal);
if (lpData == NULL)
{
GlobalUnlock(hGlobal);
return false;
}
memcpy(lpData, lpbyData, dwLen);
GlobalUnlock(hGlobal);
LPSTREAM lpStream = NULL;
if (FAILED(CreateStreamOnHGlobal(hGlobal, TRUE, &lpStream)))
{
if (lpStream != NULL)
lpStream->Release();
return false;
}
if (lpStream == NULL)
return false;
m_pImage = Gdiplus::Image::FromStream(lpStream);
if (m_pImage == NULL || m_pImage->GetLastStatus() != Gdiplus::Ok)
{
lpStream->Release();
return false;
}
lpStream->Release();
InvalidateRect(NULL);
return true;
}
|
und dann zeichnen
| C++: |
BOOL dataPictureCtrl::OnEraseBkgnd(CDC* pDC)
{
if (IsWindowVisible() == TRUE && m_pImage != NULL/* && IsWindowEnabled() == TRUE*/)
{
CRect rcClient;
GetClientRect(&rcClient);
Gdiplus::Graphics graphics(pDC->GetSafeHdc());
graphics.DrawImage(m_pImage, Gdiplus::Rect(rcClient.left, rcClient.top, rcClient.Width(), rcClient.Height()));
Gdiplus::Pen penBorder(Gdiplus::Color(255, 255, 0, 255));
graphics.DrawRectangle(&penBorder, Gdiplus::Rect(rcClient.left, rcClient.top, rcClient.Width() - 1, rcClient.Height() - 1));
}
return CStatic::OnEraseBkgnd(pDC);
}
|
Aber das will noch nicht so ganz ... evt. liegts auch einfach daran, das die EraseBackground Funktion net mehr aufgerufen wird... |
) ... bei mir funzt es net richtig bzw das Bild wird net angezeigt ...
