Always "cata".

The Object ID of the Pages Object.

The Pages object holds references to every page in the document.

The Object ID of the Outline Object.

The Outline object holds the structure of the document.

The number of fields in the document.

The Object ID of the field specified.

For example, if you want the Object ID of field number three, you would reference GetInfo(thePagesID, "Field 3").

Only leaf fields - those with a visible appearance on the page - are returned. Typically, these are Annotation objects.

The Object ID of the named field.

For example, if you want the Object ID of the field with the full name 'address.town', you would reference GetInfo(thePagesID, "Field address.town").

The name may be enclosed in single or double quotes in cases where it is ambiguous whether you are referring to a field name or a number.

Note that the PDF specification does not require that full names be unique. The ID of the first matching field will be returned.

Only leaf fields - those with a visible appearance on the page - are returned. Typically, these are Annotation objects.

A comma delimited list of the Object IDs of all the fields in the document.

Scanning the field tree can be an expensive process. It can be quicker to get a list of all field IDs and use these as required.

Only leaf fields - those with a visible appearance on the page - are returned. Typically, these are Annotation objects.

A comma delimited list of the full names of all the fields in the document.

Scanning the field tree can be an expensive process. It can be quicker to get a list of all field names and use these as required.

Only leaf fields - those with a visible appearance on the page - are returned. Typically, these are Annotation objects.

Always "pags".

The number of pages in the document.

The Object ID of the page specified.

For example, if you want the Object ID of page number three, you would reference GetInfo(thePagesID, "Page 3").

Always "page".

The number of objects displayed on the page.

The Object ID of the content object specified.

For example, if you want the Object ID of the second object on the page, you would reference GetInfo(thePageID, "Content 2").

The number of annotations displayed on the page

The Object ID of the annotation object specified.

For example, if you want the Object ID of the second annotation on the page, you would reference GetInfo(thePageID, "Annot 2").

The amount the page should be rotated when displayed.

Page rotations are typically used to ensure that landscape pages appear the right way up when displayed. Page rotations are measured in degrees and may take the values 0, 90, 180 or 270.

Always "empt".

The number of objects in the document.

Always "outl".

Always "font".

The rect defining the font bounding box. The values are measured in 1000ths. It is the smallest rectangle enclosing all glyphs positioned at the origin.

The widths of the supplied characters.

For example, if you want the characters 'a' through to 'c', you would reference GetInfo(theFontID, "widths abc").

The widths are returned as a comma delimited list.

Width values are measured in 1000ths. So a character with a width of 600 drawn in 24 point text will appear 14.4 points wide.

The preferred distance between text lines for the font. For OpenType fonts, the line spacing is calculated honoring the fsSelection bit 7 of the OS2 table. Only recent windows application do this; examples are WPF based applications or MS Word 2007 (equation editor only). For compatibility with older applications, you may need to calculate the line spacing differently:

Ascent - Descent - 1000

where ascent and descent are defined below. The -1000 is to exclude the font height.

The value is measured in 1000ths.

The ascent of the font. For OpenType fonts, this is the usWinAscent value of the OS2 table.

The value is measured in 1000ths.

The descent of the font. For OpenType fonts, this is the usWinDescent value of the OS2 table with the sign changed.

The value is measured in 1000ths and is generally non-positive.

The ascender of the font. For OpenType fonts, this is the sTypoAscender value of the OS2 table.

The value is measured in 1000ths.

The descender of the font. For OpenType fonts, this is the sTypoDescender value of the OS2 table.

The value is measured in 1000ths and is generally non-positive.

The line gap of the font. For OpenType fonts, this is the sTypoLineGap value of the OS2 table.

The value is measured in 1000ths and is generally non-positive.

Always "book".

Always "strm".

The raw data from the stream. This data may be compressed or otherwise encoded.

Compresses the stream if it is not already compressed.

Decompresses the stream.

Clears the cached, decompressed data so that a re-read of the document is not required to release the memory.

The uncompressed data are retrieved from compressed streams during most operations, but the streams are still compressed. The uncompressed data are sometimes cached so that later operations (including the actual decompression of the streams) need not invoke the decompression algorithm.

Always "jpeg" for historical reasons. However, this does not mean that the pixmap is necessarily in JPEG format.

The raw data from the stream. This data may be compressed or otherwise encoded.

The natural pixel width of the pixmap.

The natural pixel height of the pixmap.

The number of color components the pixmap contains.

Grayscale images contain one component. RGB images contain three components. CMYK images contain four components.

The Object ID of the Color Space for the pixmap.

This allows you to assign a constant alpha value to the image.

The alpha value should range between 0 (fully transparent) and 255 (fully opaque). Values outside this range will result in the alpha constant being removed.

This allows you to assign a transparent color or color range to the image.

You need to specify two values for each component of the color. If all the components of a color fall within the specified ranges, then the color will not be displayed.

For example, to make pure white elements of an RGB transparent, you might specify SetInfo(theID, "Chromakey", "255 255 255 255 255 255"). If you wanted to include colors which were off-white, you might use SetInfo(theID, "Chromakey", "250 255 250 255 250 255").

This allows you to convert an RGB image to Grayscale. It can be useful for preparing soft masks.

Always "imag".

The rect defining the bounds of the visible content.

This rectangle is encoded in PDF coordinates rather than any abstracted coordinate space.

The raw data from the stream. This data may be compressed or otherwise encoded.

The Object ID of the XObject (PixMap) containing the image data.

Always "text".

The rect defining the bounds of the visible content.

This rectangle is encoded in PDF coordinates rather than any abstracted coordinate space.

The raw data from the stream. This data may be compressed or otherwise encoded.

The insertion point for the next character after all the text in this object has been drawn.

The number of characters drawn.

The number of lines of text drawn.

This property indicates if all the assigned text could be displayed. It takes the value "1" if the text had to be truncated and "0" if not.

Only text objects that have been truncated can be chained to using AddHtml. If you try to chain to a text object that is not truncated, you will get a zero ID returned.

The previous item in an HTML chain.

If the object is not part of a chain (or is at the head of the chain), you will get a zero ID returned.

Always "line".

The raw data from the stream. This data may be compressed or otherwise encoded.

The rect defining the bounds of the visible content.

This rectangle is encoded in PDF coordinates rather than any abstracted coordinate space.

Always "grid".

The raw data from the stream. This data may be compressed or otherwise encoded.

The rect defining the bounds of the visible content.

This rectangle is encoded in PDF coordinates rather than any abstracted coordinate space.

Always "anno".

The type of annotation.

This may be 'Text', 'Link', 'Widget', or any of the many supported types listed in Section 8.4.5 of the Adobe PDF Specification.

The visible text of the annotation.

If the annotation subtype does not display text, then this field should contain an alternative description of the annotation contents.

The full name of any form field associated with this annotation.

Note that the PDF specification does not require that full names be unique.

The Page ID of the document page on which this annotation is located.

The rectangle which defines the position and area of the annotation on the page.

So to paint a rectangle over the top of an existing annotation, you could write the following.

d.Page = d.GetInfo(theID, "Page")
d.Rect = d.GetInfo(theID, "Rect")
d.FillRect

The field type for any form field associated with this annotation.

The following field types are available:

• "Pushbutton"
• "Checkbox"
• "Radio"
• "Text"
• "List"
• "Combo"
• "Signature"
• "Unknown"

More details of these field types can be found in the Section 8.6.3 of the Adobe PDF Specification.

The field value for any form field associated with this annotation.

You may wish to assign or query the form field value using this property.

Checkboxes and Radio Buttons have a value which is either "Off" or the on-state of the control as specified in the FieldOptions.

Text fields have a free-text value.

Combo Boxes and List Boxes have values restricted to a set of selections as specified in the FieldOptions.

Pushbuttons and Signatures do not have a value.

The field options for any form field associated with this annotation.

Typically, you assign a value using the FieldValue property. Some fields such as Text fields accept any value. Others such as Checkboxes and List Boxes accept only a limited range of options. The field options tells you what options are available for a particular field.

The unmarked state of a Checkbox or Radio Button is always "Off". The marked state varies and is available via this property.

The set of options for a Combo Box or List Box is available as a comma delimited set of strings which can be obtained via this property.

Pushbuttons, Signatures, and Text fields do not have options.

The effective "/FT" value for any form field associated with this annotation.

This value may be defined in a parent object so the value may differ from the "/FT" value defined directly on this object.

The effective "/Ff" value for any form field associated with this annotation.

This value may be defined in a parent object so the value may differ from the "/Ff" value defined directly on this object.

The effective "/DA" value for any form field associated with this annotation.

This value may be defined in a parent object so the value may differ from the "/DA" value defined directly on this object.

The effective "/Q" value for any form field associated with this annotation.

This value may be defined in a parent object so the value may differ from the "/Q" value defined directly on this object.

Always "wemf".

The raw data from the stream. This data may be compressed or otherwise encoded.

The rect defining the bounds of the visible content.

This rectangle is encoded in PDF coordinates rather than any abstracted coordinate space.

The width of the image in points.

The height of the image in points.

The total width of the HTML image.

When adding HTML you only see one page at a time. This property allows you to find the width of the HTML before it is paged onto the PDF.

This value is measured in pixels and is usually very close to ScrollWidth.

The total height of the HTML image.

When adding HTML you only see one page at a time. This property allows you to find the height of the HTML before it is paged onto the PDF.

This value is measured in pixels and is usually very close to ScrollHeight.

The scroll width of the HTML image.

It is the same scroll width value as retrieved using script inside HTML.

This value is measured in pixels.

The scroll height of the HTML image.

It is the same scroll height value as retrieved using script inside HTML.

This value is measured in pixels.

The vertical offset from the top of the HTML image to the top of the current page.

This value is measured in pixels.

The width of the portion of the HTML image which is being displayed.

This value is measured in pixels.

The height of the portion of the HTML image which is being displayed.

This value is measured in pixels.

This property tells you if there are more pages of HTML to be displayed.

It takes the value "1" if the HTML was truncated and "0" if not.

The text visible on the view.

Note that the text is in layout order not necessarily in reading order.

Always "cact".

The raw data from the stream. This data may be compressed or otherwise encoded.

Always "grst".

Always "cols".

The type of color space.

Any name associated with the color space. For example, the name of a spot color.

The Object ID of any associated ICC Color Profile.

Always "iccp".

The raw data from the stream. This data may be compressed or otherwise encoded.

Always "obst".

The raw data from the stream. This data may be compressed or otherwise encoded.

Always "xref".

The raw data from the stream. This data may be compressed or otherwise encoded.