Constants

The Constants module in the CustomControls DESIGNER library declares the enumerations and UDTs shared across the entire CustomControls package.

The module is internal to the DESIGNER library; user code does not reference it by name. The members it exposes are:

  • Enumerations — the full set of public constants used by the package’s controls, style objects, and form options. Each is documented on its own page under Enumerations.
  • UDTs — SerializeInfo and Canvas, the two value types passed to custom control implementations; both carry twinBASIC pseudo-DLL method bindings and are documented under Framework.

Enumerations

Enumeration Purpose
ColorRGBA Long-compatible type alias for 32-bit ABGR colour values
CornerShape How a single corner of a control is shaped: curve, notch, or cut-out
Customtate Reserved duplicate of WindowState
DockMode How a control is docked inside its container
FillPattern The gradient or fill pattern used by a Fill
FontWeight Font weights from tbThin (100) through tbHeavy (900), mirroring the OpenType wght scale
PixelCount Long-compatible type alias for measurements expressed in pixels
PointSize Long-compatible type alias for font sizes expressed in points
StartupPosition Initial position of a form when it is first shown
TextAlignment Horizontal and vertical alignment of text within a TextRendering
TextOverflowMode How text longer than the available area is truncated
BorderStyle Window-frame style passed to WindowsFormOptions.BorderStyle
WindowState The minimized / normal / maximized window state of a form

UDTs

Type Purpose
SerializeInfo Per-instance serializer returned by CustomControlContext.GetSerializer; used to deserialize designer-set property values and to query the runtime mode
Canvas Drawing surface passed to ICustomControl.Paint; exposes element-adding and DPI / size query methods

See Also