This topic covers the implementation details of TqppIntegerProperty.
Scope: cIntegerProperty.pas; class derived from TSL_Property. Prepared from the curated implementation supplied for this review on 2 October 2026.
IntValue is the serialized integer. ReadFromXML begins with the current DataValue and preserves it if IntValue is absent; present text is converted with StrToInt before assignment. The constructor receives DefVal, MinVal, MaxVal and PgUpVal from its caller, so no universal integer range or default can be inferred.
Certain delay subclasses can substitute IniSettings defaults when UseIniSettingsInPropertyConstructor is enabled. Constructor bounds are not proof that this XML reader enforces them.
Notation and shared helper rules: Reading this reference.
No literal rec_type value is emitted directly by the selected routines. A property envelope, an inherited writer or a delegated record can supply its identifying attributes.
Inherited implementation: TSL_Property. Follow it when the ordered behavior invokes inherited methods; inherited fields are not repeated as locally owned fields.
Exact XML fields and attributes
The paths below start at this record or property node. A slash identifies a child element; @ identifies an attribute. Curly braces mark a variable index or expression, not literal XML text. Initial values describe initialization; they do not establish what an omitted individual element does. The Implementation toggle below contains the supplied routines for exact branch order and conversions.
IntValue
XML representation: The text of the IntValue element.
Reading: Converts the stored text to a number and assigns it to aPropValue.IntValue when the record node exists.
Writing: Stores the text representation of DataValue.IntValue whenever the writer reaches this field.
Initialization and reset values
TqppIntegerProperty.CreateInit
Setting or temporary variable |
Initial value |
When it is assigned |
MinAllowed |
MinVal |
Always |
MaxAllowed |
MaxVal |
Always |
PageUpValue |
PgUpVal |
Always |
PropValue.PropertyType |
ptInteger |
Always |
PropValue.IntValue |
DefVal |
Always |
PropValue.IntValue |
IniSettings.PageCopyingDelay |
UseIniSettingsInPropertyConstructor is true; self is TPageCopyingDelay |
PropValue.IntValue |
IniSettings.OpfTransferDelay |
UseIniSettingsInPropertyConstructor is true; self is TOpfTransferDelay |
PropValue.IntValue |
IniSettings.SeedPagesDelay |
UseIniSettingsInPropertyConstructor is true; self is TSeedPagesDelay |
DataValue |
PropValue |
Always |
DisplayValue |
IntToStr (PropValue.IntValue) |
Always |
This routine also calls inherited Create. See Implementation for their order and any conditional calls.
Storage declarations relevant to interpretation
These are in-memory member and property types, not a list of mandatory XML children. They retain array bounds, fixed buffers and selector types. The field reference above defines what is actually serialized.
Name |
Declared type / bounds |
Kind |
MinAllowed |
integer |
member |
MaxAllowed |
integer |
member |
PageUpValue |
integer |
member |
peIntegerValueIN |
integer |
member |
The Implementation toggle contains only TqppIntegerProperty methods. Initializers and helpers belonging to other types are identified separately below. Shared XML-helper limitations are explained in Reading this reference.
