CreateIconIndirect and mask

Hello! I've tried to create an icon from two gdi+ bitmaps and I can't make the icon transparent.
Here's my code:

Code:

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        ICONINFO iconInfo = {0};
        iconInfo.fIcon = TRUE;
        bmp.GetHBITMAP(Color(255,0,0), &iconInfo.hbmColor);
        bmp2.GetHBITMAP(Color(255,0,0), &iconInfo.hbmMask);

        HICON hIcon = CreateIconIndirect(&iconInfo);

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It seems that hbmMask is not set. Why?

Bye!

If I load the icon HBITMAPS from resource it's working.

Code:

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iconInfo.hbmColor = LoadBitmap(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDB_BITMAP2));
iconInfo.hbmMask = LoadBitmap(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDB_BITMAP1));

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The problem might be on Bitmap::GetHBITMAP()?