Hi, I have this code in DirectX 9, in which I need to get the DC from a COM interface and draw it. I do get the DC and it contains the image, but I get a black screen. Any ideas why?
LPDIRECT3DSURFACE9 pRenderSurface = NULL, pRenderSurfaceTMP = NULL;
m_pRenderTexture->GetSurfaceLevel(0, &pRenderSurface);
if (pRenderSurface == NULL)
return FALSE;
m_pD3DDevice->CreateOffscreenPlainSurface(m_nWidth, m_nHeight,
D3DFMT_X8R8G8B8, D3DPOOL_SYSTEMMEM, &pRenderSurfaceTMP, 0);
m_pD3DDevice->GetRenderTargetData(pRenderSurface,pRenderSurfaceTMP);
HDC hDC = NULL;
hr = pRenderSurfaceTMP->GetDC(&hDC);
if (FAILED(hr))
return FALSE;
if (m_pViewObject != NULL)
{
RECTL rcRect = {0, 0, m_nWidth, m_nHeight};
hr = m_pViewObject->Draw(DVASPECT_CONTENT, 1,
NULL, NULL, NULL, hDC, &rcRect, NULL, NULL,
0);
}
pRenderSurface->ReleaseDC(hDC);
pRenderSurface->Release();
m_pD3DDevice->SetStreamSource( 0, m_pVertexBuffer, 0, sizeof(Vertex) );
m_pD3DDevice->SetTexture( 0, m_pRenderTexture );
hr = m_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
m_hbrBackground = NULL;
pRenderSurfaceTMP->Release();
Thanks in advance,
yakobom