TcxGeometryObject Class
The base class for all objects that store geometry-related information.
Declaration
TcxGeometryObject = class(
TcxLockablePersistent
)Remarks
All visual elements in DevExpress controls can scale automatically according to monitor DPI changes when the application receives the WM_DPICHANGED system message.
Main API Members
The list below outlines key members of the TcxGeometryObject class. You can use these members to work with visual elements.
Geometry-Related API Members
- ChangeScale
Scales the geometric primitive according to specified numerator and denominator values.
Note
All DevExpress controls call this procedure automatically to scale their visual elements. You may need to call this procedure only if you implement a custom component that uses a
TcxGeometryObjectclass descendant.- LoadFromStream | SaveToStream
- Allow you to store the geometric primitive in a stream.
- OnChange
- Allows you to respond to geometric primitive changes.
General-Purpose API Members
- Assign
- Copies compatible settings between visual elements.
- BeginUpdate | EndUpdate | CancelUpdate
- Allow you to avoid excessive redraw operations during batch visual element changes.
- Owner
- Provides access to the parent object.
Terminal TcxGeometryObject Class Descendants
Do not use the TcxGeometryObject class directly. Use the following descendants instead:
- TcxMargin
- Stores pixel margins of a visual element.
- TcxOffsets
- Stores pixel offsets or margins of a visual element.
- TcxRect
- Stores the area (bounding rectangle) of a visual element.
- TdxPoint
- Stores pixel coordinates of a point.
- TcxSize
- Stores pixel dimensions of a visual element.
- TdxPointDoublePersistent
- Stores the coordinates of a point (in abstract measurement units).
- TdxSizeFloat
- Stores dimensions in double precision floating-point coordinates.
Inheritance
See Also