Create screenshot and save to Windows clipboard

The following journal will create a screenshot of the current NX graphics window (using a white background) and place the resulting image on the Windows clipboard. After running the journal, you can immediately paste the image into another application (email message, powerpoint deck, paint program, etc.). The resulting image is cropped,except for a user-specified amount of white space around the image.

'NXJournaling.com
'August 11, 2015

'Export a screenshot from NX with a white background
'place the image data on the Windows clipboard so you can immediately
'"paste" the image to a new location (email, powerpoint, etc).
'This version will crop the image and provide a user supplied amount of "whitespace" on each side of the image.

Option Strict Off
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports NXOpen
Imports NXOpen.UF

Module Module2

Dim theSession As Session = Session.GetSession()
Dim theUfSession As UFSession = UFSession.GetUFSession()

Sub Main()

If IsNothing(theSession.Parts.BaseWork) Then
'active part required
Return
End If

Dim lw As ListingWindow = theSession.ListingWindow
lw.Open()

Dim tempScreenshot As String
Dim tempLocation As String = IO.Path.GetTempPath

tempScreenshot = IO.Path.Combine(tempLocation, "NXscreenshot.png")

Try
ExportScreenshot(tempScreenshot)
Catch ex As Exception
lw.WriteLine("Error: " & ex.Message)
Return
End Try

'crop the screenshot (filename, amount of whitespace on each side of image [integer value, number of pixels])
CropScreenshot(tempScreenshot, 5)

'copy image to clipboard
Dim theImage As Bitmap = CType(Image.FromFile(tempScreenshot), Bitmap)
Clipboard.SetImage(theImage)

lw.Close()

End Sub

Sub ExportScreenshot(ByVal filename As String)

'save user preference for visibility of WCS, triad, view name, and view border
Dim wcsVisible As Boolean = theSession.Parts.BaseDisplay.WCS.Visibility
Dim triadVisible As Integer = theSession.Preferences.ScreenVisualization.TriadVisibility
Dim displayModelViewNames As Boolean = theSession.Parts.BaseDisplay.Preferences.NamesBorderVisualization.ShowModelViewNames
Dim displayModelViewBorders As Boolean = theSession.Parts.BaseDisplay.Preferences.NamesBorderVisualization.ShowModelViewBorders

'turn off the WCS, triad, view name, and view border
theSession.Parts.BaseDisplay.WCS.Visibility = False
theSession.Preferences.ScreenVisualization.TriadVisibility = 0
theSession.Parts.BaseDisplay.Preferences.NamesBorderVisualization.ShowModelViewBorders = False
theSession.Parts.BaseDisplay.Preferences.NamesBorderVisualization.ShowModelViewNames = False

Try
theUfSession.Disp.CreateImage(filename, UFDisp.ImageFormat.Png, UFDisp.BackgroundColor.White)
Catch ex As Exception
MsgBox(ex.Message & ControlChars.NewLine & _
"'" & filename & "' could not be created")
Throw New Exception("Screenshot could not be created")
Finally
'reset visibility of WCS, triad, view name, and view border to user's preference
theSession.Parts.BaseDisplay.WCS.Visibility = wcsVisible
theSession.Preferences.ScreenVisualization.TriadVisibility = triadVisible
theSession.Parts.BaseDisplay.Preferences.NamesBorderVisualization.ShowModelViewBorders = displayModelViewBorders
theSession.Parts.BaseDisplay.Preferences.NamesBorderVisualization.ShowModelViewNames = displayModelViewNames
End Try

End Sub

Sub CropScreenshot(ByVal theImageFile As String, ByVal borderWidth As Integer)

'borderWidth = whitespace to leave around the border of the image

Dim original As New Bitmap(theImageFile)

Dim JPGminX As Integer = original.Width
Dim JPGminY As Integer = original.Height
Dim JPGmaxX As Integer = 0
Dim JPGmaxY As Integer = 0

Dim bckgrndColor As Color = Color.White

For y As Integer = 0 To original.Height - 1
For x As Integer = 0 To original.Width - 1
If original.GetPixel(x, y).ToArgb <> bckgrndColor.ToArgb Then
If x < JPGminX Then
JPGminX = x
ElseIf x > JPGmaxX Then
JPGmaxX = x
End If
If y < JPGminY Then
JPGminY = y
ElseIf y > JPGmaxY Then
JPGmaxY = y
End If
End If
Next
Next
Dim rect As New Rectangle(JPGminX, JPGminY, JPGmaxX - JPGminX, JPGmaxY - JPGminY)

Dim cropped As Bitmap = original.Clone(rect, original.PixelFormat)

'create new image sized to add border around cropped image
Dim border As New Bitmap(cropped.Width + (2 * borderWidth), cropped.Height + (2 * borderWidth), cropped.PixelFormat)

'create a new graphics object
Dim g As Graphics = Graphics.FromImage(border)

'fill the graphics object with white color (for background)
Using myBrush As Brush = New SolidBrush(Color.White)
g.FillRectangle(myBrush, 0, 0, border.Width, border.Height)
End Using

'calculate position to place cropped image onto background image
Dim xImage As Integer = border.Width - cropped.Width - borderWidth
Dim yImage As Integer = border.Height - cropped.Height - borderWidth

'draw cropped image onto white background
g.CompositingMode = Drawing2D.CompositingMode.SourceOver
g.DrawImage(cropped, New Drawing.Point(xImage, yImage))

'dispose of unneeded graphics objects
original.Dispose()
cropped.Dispose()
g.Dispose()

'save our finished graphics file
border.Save(theImageFile, Imaging.ImageFormat.Png)

End Sub

Public Function GetUnloadOption(ByVal dummy As String) As Integer

'Unloads the image immediately after execution within NX
GetUnloadOption = NXOpen.Session.LibraryUnloadOption.Immediately

End Function

End Module