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Printing graphics in VB.NET

Hi

Hopefully just a simple problem.

All i am trying to do is print a rectangle or other graphic at a specified point on the paper measured in millimeters. The start is to get the hard margins of the printer.

I am using the following code to get the hard margins.

Private Const PHYSICALOFFSETX As Int32 = 112
Private Const PHYSICALOFFSETY As Int32 = 113
Private Const LOGPIXELSY As Int32 = 90
Private Const LOGPIXELSX As Int32 = 88

Dim hdcPtr As IntPtr = e.Graphics.GetHdc
e.Graphics.ReleaseHdc()


Dim HardMarginLeft As Single = Convert.ToSingle(GetDeviceCaps(hdcPtr, PHYSICALOFFSETX) / (GetDeviceCaps(hdcPtr, LOGPIXELSX) / 25.4))
Dim HardMarginTop As Single = Convert.ToSingle(GetDeviceCaps(hdcPtr, PHYSICALOFFSETY) / (GetDeviceCaps(hdcPtr, LOGPIXELSY) / 25.4))

This seems to give me incorrect values.

To check i print a rectangle at 0,0 and measure the hardmargins they are different!

Please tell me i am missing something really simple
Jul 22 '07 #1
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