Help! Can't draw GDIplus bitmap from HBITMAP

My problem is that I want to draw some ownerdrawn controls on a GDI+ graphics surface.

My approach is:

1. I've declared a global object as:

Code:

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extern Gdiplus::Bitmap                *pBmpOdElem;

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2. I setup an empty bitmap with:

Code:

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void createGdiplusObj(void)
{
        pBmpOdElem = new Bitmap(50,50,PixelFormatDontCare);
}

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3. I try to draw onto the bitmap using the pBmpOdElem pointer:

Code:

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BOOL OwnDrawProc (WPARAM wparam, LPARAM lparam)
{
    HBITMAP                                hBitmap = 0;
    LPDRAWITEMSTRUCT        lpDrawItem = (LPDRAWITEMSTRUCT)lparam;
    int                                        x =  lpDrawItem->rcItem.top;
    int                                        y =  lpDrawItem->rcItem.left;
    Graphics                        gr(lpDrawItem->hDC);
    UINT                                uiSelect = lpDrawItem->itemState & ODS_SELECTED;

...

        pBmpOdElem->FromHBITMAP(hBitmap, NULL);
    gr.DrawImage (pBmpOdElem, x, y, pBmpOdElem->GetWidth(), pBmpOdElem->GetHeight());
}

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and nothings happens...

My previous approach to the problem was creating a Bitmap object in the ownerdrawn procedure and draw it accordingly. This worked but I dont want to create a Bitmap object every time the painting routine gets called... it's not efficient.

Any help with managing those GDI+ ptrs?

thank you.

Hernan

don't care...

I fixed it with the following line

Code:

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    gr.DrawImage (pBmpOdElem->FromHBITMAP(hBitmap,0), x, y, pBmpOdElem->GetWidth(), pBmpOdElem->GetHeight());

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