This topic covers the implementation details of TPictureboxOptions.
Scope: cpPictureboxOptions.pas; class derived from TBtnEditProperty. Prepared from the curated implementation supplied for this review on 2 October 2026.
Contains picBoxAttr and picBoxAttr2. Both are initialized independently and use TPictureboxAttr. The serializer alone does not identify which side/role the second record represents.
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: TBtnEditProperty. Follow it when the ordered behavior invokes inherited methods; inherited fields are not repeated as locally owned fields.
Structures used directly by this XML implementation:
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.
This type has no locally serialized scalar fields. Follow the nested serializer or inherited implementation described here; the Implementation toggle shows the exact calls.
Nested records and repeated elements
Operation |
XML location |
When it is processed |
Read picBoxAttr |
picBoxAttr |
the record node exists |
Read picBoxAttr2 |
picBoxAttr2 |
the record node exists |
Write picBoxAttr |
picBoxAttr |
Whenever this part of the routine is reached |
Write picBoxAttr2 |
picBoxAttr2 |
Whenever this part of the routine is reached |
Initialization and reset values
TPictureboxOptions.Create
Setting or temporary variable |
Initial value |
When it is assigned |
PropName |
“Picturebox Options” |
Always |
Required |
2 |
Always |
PropValue |
Default (TSL_PropValue) |
Always |
Version |
0 |
Always |
DataValue |
PropValue |
Always |
This routine also calls inherited Create; picBoxAttr.Initialize; picBoxAttr2.Initialize; self.FillDisplayValue. 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 |
picBoxAttr |
TPictureboxAttr |
member |
picBoxAttr2 |
TPictureboxAttr |
member |
The Implementation toggle contains only TPictureboxOptions methods. Initializers and helpers belonging to other types are identified separately below. Shared XML-helper limitations are explained in Reading this reference.