Re: Don't know how to insert my data array in loadpicture()

"Alex Blekhman" <xfkt@oohay.moc>
Fri, 16 Jun 2006 11:55:58 +0300
Boki wrote:

I am modifing the LoadPic example, I want to load my byte
array, not the file pointer, could you please advice? I
don't wehre to insert or modify ....

Here's slightly changed example.

void LoadPictureFileI(int ilength)
    // original buffer
    LPVOID pvSourceData = ...

    // get buffer size
    DWORD dwBuffSize = ...
    _ASSERTE(-1 != dwBuffSize);

    LPVOID pvData = NULL;
    // alloc memory based on buffer size
    HGLOBAL hGlobal = GlobalAlloc(
        GMEM_MOVEABLE, dwBuffSize);
    _ASSERTE(NULL != hGlobal);

    pvData = GlobalLock(hGlobal);
    _ASSERTE(NULL != pvData);

    // copy buffer and store in global memory
    CopyMemory(pvData, pvSourceData, dwBuffSize);

    LPSTREAM pstm = NULL;
    // create IStream* from global memory
    HRESULT hr = CreateStreamOnHGlobal(
        hGlobal, TRUE, &pstm);
    _ASSERTE(SUCCEEDED(hr) && pstm);

    // Create IPicture from image file
    if (gpPicture)

    hr = ::OleLoadPicture(pstm, dwFileSize, FALSE,
        IID_IPicture, (LPVOID*)&gpPicture);
    _ASSERTE(SUCCEEDED(hr) && gpPicture);

    InvalidateRect(ghWnd, NULL, TRUE);

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