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arpi23

DirectDraw primary surface to jpeg

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Hi! I have a question. I have a basic directdraw application, and i have to capture the screen into a jpeg format. I am using directx 9.0. I am new to directx. Please help, thanks in advance. arpi

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this isnt for directdraw it is for direct3d 9 but it may be helpful


void CDirect3D::TakeScreenShot(LPCTSTR pDestFile)
{
D3DDISPLAYMODE displayMode;

LPDIRECT3DSURFACE9 pd3dsFront = NULL;

// Get the display mode

m_pd3dDevice->GetDisplayMode(0, &displayMode);

// Create a surface to hold the front buffer

m_pd3dDevice->CreateOffscreenPlainSurface(displayMode.Width, displayMode.Height,
D3DFMT_A8R8G8B8, D3DPOOL_SYSTEMMEM, &pd3dsFront, NULL);

// Get the front buffer and save it to a file

if( SUCCEEDED( m_pd3dDevice->GetFrontBufferData(0, pd3dsFront) ) )
D3DXSaveSurfaceToFile(pDestFile, D3DXIFF_JPG, pd3dsFront, NULL, NULL);

// Release the surface

if( pd3dsFront ) pd3dsFront->Release();
}


[edited by - eFoDay on March 7, 2004 5:58:01 PM]

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Thanks, but i am not using D3D, can i do it without it? How to access the pixel data of the primary surface?(If if can acces the per pixel data ican save it to any format)

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use CSurface->Lock(...) to get a pointer to the surface actual bytes. Look in the SDK, this part is explained. And don''t forget to unlock it afterwards.

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