I'm having a{*filter*}ens of a time getting a device context from a PictureBox in
order to make the DLL call work. I tried to use the API call GetDC using the
PictureBox .Handle property, but that didn't work.

Any advice as to how to get a DC for a PictureBox would be greatly
appreciated!
Declare Function GetDC Lib "user32" (ByVal hwnd As IntPtr) As Long

Declare Function cdtDraw Lib "Cards32.Dll" (ByVal hdc As Long, ByVal X As
Long, ByVal Y As Long, ByVal cardValue As Long, ByVal cardSuit As Long,
ByVal rgbColor As Long) As Boolean

...

cdtDraw(GetDC(pbxCPUCard1.Handle), 0, 0, CardBack, CPU.Hand(0).Suit, 0) <-
does nothing

    The long data in VB6 is equivalent to integer in VB.NET.

In VB6 was:
    Public Declare Function GetDC Lib "user32" Alias "GetDC" (ByVal hwnd As
Long) As Long

In VB.NET I think it could:
    Public Declare Function GetDC Lib "user32" Alias "GetDC" (ByVal hwnd As
integer) As integer

In the cdtDraw you have to do the same operation....change then long type
for integer type.

Regards,

Would that be IntPtr as opposed to Integer?

    I see more clear use Integer but you can use IntPtr too....Did you fix
your problem?

Regards,

Yes, thank you. I am able to draw onto the PictureBox controls.

Now what I have to do is figure out a way to selectively override the
Paint() event such that if the user minimizes or covers over the form, the
cards redraw themselves. This is proving difficult, as the Paint() events
are called at startup when none of the variables in the rest of the program
are defined, leaving me with NullReferenceExceptions all over the place.