[Gambas-user] How to know how many pages a pdf file has.

[Ru Vuott]

Hello,

I "suppose", to know how many pages a pdf file has, I should use this line:

      pdf.Index.Count

Where pdf is a "PdfDocument".

I do not know if I'm wrong, but I can not run that line.

*************************************

Public Sub Form_Open()

 Dim index As Short = 1
 Dim pdf As New PdfDocument
 Dim pc As Picture
  
  
  With pdf
      .Open("/path/of/my/file.pdf")
      If .Ready = True Then
' It loads first page:
     pc = pdf[1].Image.Picture

     PictureBox1.Picture = pc
     PictureBox1.Resize(pdf[1].Width, pdf[1].Height)

  Else
     Message.Error("<FONT color=darkred><B>Unable loading file pdf !")
    Quit
  Endif
 
  End With
  
  Print pdf.Index.Count  '  <=======
  
End

****************************************************

I obtain at that line this error notice:
" Null object "

I do not understand....

Regards
vuott