Below is a utility method that will return the height of the header or the footer of the passed 4D Write Pro document.

// Method: WP_GetMarginAreaObjHeight // // Parameters: // $WParea : WP Document Object // $bHeader : True - Height of Header //    False - Height of Footer // $lUnit (Optional) : Unit of results, //    (use wk unit... contants ie. wk unit cm or wk unit inch) // ---------------------------------------------- #DECLARE($WParea : 4D.WriteDocument; $bHeader : Boolean; $lUnit : Text)->$height : Real var $wpObject : 4D.WriteRange var $wpAttribute; $wpUnit : Text var $calc1; $calc2; $docMargin; $objTMargin; $objBMargin : Real var $obPos : Object If ($bhHeader)    $wpObject:=WP Get header($WParea; 1)    $wpAttribute:=wk page margin top Else    $wpObject:=WP Get footer($WParea; 1)    $wpAttribute:=wk page margin bottom End if If (Not($wpObject=Null))    // Save current layout unit and apply specified unit    If (Count parameters>2)       WP GET ATTRIBUTES($WParea; wk layout unit; $wpUnit)       WP SET ATTRIBUTES($WParea; wk layout unit; $lUnit)    End if       // Calculate size of container    WP GET ATTRIBUTES(WP Get section($WParea; 1); $wpAttribute; $docMargin)    WP GET ATTRIBUTES($wpObject; wk margin top; $objTMargin; wk margin bottom; $objBMargin)    $calc1:=$docMargin-($objTMargin+$objBMargin)       // Calculate size of content    $obPos:=WP Get position($wpObject)    $calc2:=$obPos.bounds.bottom-$obPos.bounds.top       // Return the larger of the two (Container size vs Content size)    $height:=Choose($calc1>$calc2; $calc1; $calc2)       // Restore layout unit    If (Count parameters>2)       WP SET ATTRIBUTES($WParea; wk layout unit; $wpUnit)    End if    Else    // No Footer    $height:=0 End if

Below is an example use to get the height of the header in inches and the height of the footer in centimeters for a 4D Write Pro document:

var $rHeaderH; $rFooterH : Real $rHeaderH:=WP_GetMarginAreaObjHeight(WParea; True; wk unit inch) $rFooterH:=WP_GetMarginAreaObjHeight(WParea; False; wk unit cm)