Get Page Information

PDF Xpress™ recovers PDF per-page characteristics that describe how that page should be presented on display or printer devices.

Applications that report page size should recover PageInfo instances with either the GetInfo method or the GetInfoEx method using PDF_CoordinateSystem_RotatedCroppedUserSpace.
Applications that handle coordinate system conversions should recover PageInfo instances with the GetInfoEx method using PDF_CoordinateSystem_DefaultUserSpace.

Refer to topic PDF Coordinate Systems for additional information.

This topic provides information about the following:

Get Physical Page Dimensions
Get Page CropBox
Get Page MediaBox

Get Physical Page Dimensions

The following example shows how to recover the physical dimensions of a PDF page, expressed in inches:

VB Example	Copy Code
'This function returns a string describing the PDF page size in inches. Public Function GetPageSizeInInches( _ ByVal objPdf As PdfDocument, ByVal pageIndex As Long) As String Dim objPageInfo As PageInfo objPageInfo = objPdf.GetInfo(pageIndex) GetPageSizeInInches = "Page " & CLng(pageNumber + 1) & " dimensions are " _ & objPageInfo.ClipWidth / 72# & " inches x" _ & objPageInfo.ClipHeight / 72# & " inches" End Function

VB Example

Copy Code

'This function returns a string describing the PDF page size in inches.
Public Function GetPageSizeInInches( _
    ByVal objPdf As PdfDocument, ByVal pageIndex As Long) As String
    Dim objPageInfo As PageInfo
    objPageInfo = objPdf.GetInfo(pageIndex)
    GetPageSizeInInches = "Page " & CLng(pageNumber + 1) & " dimensions are " _
        & objPageInfo.ClipWidth / 72# & " inches x" _
        & objPageInfo.ClipHeight / 72# & " inches"
End Function

Get Page CropBox

The following example shows how to recover the PDF page CropBox, expressed in default user space units:

VB Example	Copy Code
'This function returns a string describing the PDF crop box in default user space units. Public Function GetCropBox( _ ByVal objPdf As PdfDocument, ByVal pageIndex As Long) As String Dim objPageInfo As PageInfo objPageInfo = objPdf.GetInfo(pageIndex, PDF_CoordinateSystem_DefaultUserSpace) GetCropBox = "Page " & CLng(pageNumber + 1) & " CropBox is [ " _ & "Left=" & objPageInfo.ClipX & ", " _ & "Bottom=" & objPageInfo.ClipY & ", " _ & "Right=" & objPageInfo.ClipX + objPageInfo.ClipWidth & ", " _ & "Top=" & objPageInfo.ClipY + objPageInfo.ClipHeight & " ]" End Function

VB Example

Copy Code

'This function returns a string describing the PDF crop box in default user space units.
Public Function GetCropBox( _
    ByVal objPdf As PdfDocument, ByVal pageIndex As Long) As String
    Dim objPageInfo As PageInfo
    objPageInfo = objPdf.GetInfo(pageIndex, PDF_CoordinateSystem_DefaultUserSpace)
    GetCropBox = "Page " & CLng(pageNumber + 1) & " CropBox is [ " _
        & "Left=" & objPageInfo.ClipX & ", " _
        & "Bottom=" & objPageInfo.ClipY & ", " _
        & "Right=" & objPageInfo.ClipX + objPageInfo.ClipWidth & ", " _
        & "Top=" & objPageInfo.ClipY + objPageInfo.ClipHeight & " ]" 
End Function

Get Page MediaBox

The following example shows how to recover the PDF page MediaBox, expressed in default user space units:

VB Example	Copy Code
'This function returns a string describing the PDF crop box in default user space units. Public Function GetCropBox( _ ByVal objPdf As PdfDocument, ByVal pageIndex As Long) As String Dim objPageInfo As PageInfo objPageInfo = objPdf.GetInfo(pageIndex, PDF_CoordinateSystem_DefaultUserSpace) GetMediaBox = "Page " & CLng(pageNumber + 1) & " MediaBox is [ " _ & "Left=" & objPageInfo.MediaX & ", " _ & "Bottom=" & objPageInfo.MediaY & ", " _ & "Right=" & objPageInfo.MediaX + objPageInfo.MediaWidth & ", " _ & "Top=" & objPageInfo.MediaY + objPageInfo.MediaHeight & " ]" End Function

VB Example

Copy Code

'This function returns a string describing the PDF crop box in default user space units.
Public Function GetCropBox( _
    ByVal objPdf As PdfDocument, ByVal pageIndex As Long) As String
    Dim objPageInfo As PageInfo
    objPageInfo = objPdf.GetInfo(pageIndex, PDF_CoordinateSystem_DefaultUserSpace)
    GetMediaBox = "Page " & CLng(pageNumber + 1) & " MediaBox is [ " _
        & "Left=" & objPageInfo.MediaX & ", " _
        & "Bottom=" & objPageInfo.MediaY & ", " _
        & "Right=" & objPageInfo.MediaX + objPageInfo.MediaWidth & ", " _
        & "Top=" & objPageInfo.MediaY + objPageInfo.MediaHeight & " ]" 
End Function