Draw an AxHost-derivated class.

[Carlo Micieli]

Hello,

I have a problem with an AxHost-derived class, this class
represents a barcode for a thermal printer.
To draw the barcode it expose a method call Draw() that
receive as parameter a device context handler.
When I run the following code:

using(Graphics gr = this.CreateGraphics())
{
System.IntPtr hDC = gr.GetHdc();

//AxSerializedBarCode is derived from AxHost
AxIntermecActiveX.AxSerializedBarCode axBarCode =
new AxIntermecActiveX.AxSerializedBarCode();
axBarCode.Width = 100;
axBarCode.Height = 10;
axBarCode.Value = "1234567";
axBarCode.Draw(hDC.ToInt32(), 10, 10);
gr.ReleaseHdc(hDC);
}

an InvalidOperationException has thrown. Is there any
different method to send an activex control to a printer,
the thermal printer is installed as a normal windows
printer.

Thanks in advance.
Carlo Micieli