Can some expert tell me how to put a PNG in a Button?

I've been trying to draw a PNG on a Button for a long time without any luck.

There is no documentation, Tutorial, Post or any kind of information abut
how to draw a Transparent PNG image on a CButton or CBitmapButton.

So, I really need some help on how to do it.

I tried:

----------------------------------------------Code-----------------------------------

void MyButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{

    // TODO: Add your code to draw the specified item
    CDC dc;
    dc.Attach(lpDrawItemStruct->hDC);
    CRect rt;
    rt = lpDrawItemStruct->rcItem;

    Graphics grpx(dc);

        Rect rect(50,20,100,100); //Size and Pos of the Image

        Image * Img = Image::FromFile(L"C:\\Img.png",FALSE);//Image
Destination

        grpx.DrawImage(Img,rect);//Draw The PNG on the Button

    dc.SetTextColor(RGB(0,0,255));

    CString Temp;
    GetWindowText(Temp);

    dc.DrawText(Temp,rt,DT_CENTER|DT_VCENTER|DT_SINGLELINE);

    dc.Detach();
}

----------------------------------------End of
Code-------------------------------------------------------

But it doesn't work at all...

This will Improve my GUIs dramatically.