Gradient Brush (PRIM_VS.GradientBrush)

Base class for all gradient brushes

Ancestors - Brush (PRIM_VS.Brush)Object (PRIM_OBJT)


A Gradient Brush is the base class for Linear and Radial brushes.


The sample below changes from red at the start to blue at the end. This is denoted by the use of At(100) on the second color (#BrushColor2).
As the transition is uniform the red channel is decremented from 255 to 0 while the blue channel increases from 0 to 255. The result is that at the mid-point the color will be 128:0:128, which is purple.
The IDE will manage the creation of styles and brushes. This code is provided for reference purposes.
Begin_Com Role(*EXTENDS #PRIM_WEB) Height(457) Width(1169) Style(#Style1)
   Define_Com Class(#PRIM_VS.Style) Name(#Style1) Backgroundbrush(#LinearBrush1)
   Define_Com Class(#PRIM_VS.LinearBrush) Name(#LinearBrush1) Colors(#BrushColors1)
   Define_Com Class(#PRIM_VS.BrushColors) Name(#BrushColors1)
   Define_Com Class(#PRIM_VS.BrushColor) Name(#BrushColor1) Color(255:0:0) Parent(#BrushColors1)
   Define_Com Class(#PRIM_VS.BrushColor) Name(#BrushColor2) At(100) Color(0:0:255) Parent(#BrushColors1)


Name Description
Colors Collection of colors to define the gradient
ComponentClassName ComponentClassName is the name of the component's class. Inherited from Object (PRIM_OBJT)
ComponentMembers ComponentMembers provides access to all the member components of this component Inherited from Object (PRIM_OBJT)
ComponentPatternName ComponentPatternName is used to qualify the class of the component. Inherited from Object (PRIM_OBJT)
ComponentTag Generic space allowing a value to be stored for the instance Inherited from Object (PRIM_OBJT)
ComponentType ComponentType gives you access to the type information about the component Inherited from Object (PRIM_OBJT)
ComponentTypeName ComponentTypeName is the fully qualified name of the component's class. Inherited from Object (PRIM_OBJT)
Name Name identifies the component Inherited from Object (PRIM_OBJT)
Opacity Opacity to be applied to the brush
Owner Owner owns this component Inherited from Object (PRIM_OBJT)
Parent The component instance to which this instance is attached. The visual container for a control or the collector of a set of child instances Inherited from Object (PRIM_OBJT)
Spread Defines brush behavior outside the bounds of the specified color range


Name Description
CreateInstance CreateInstance is signalled when an instance of a component is created Inherited from Gradient Brush (PRIM_VS.GradientBrush)
DestroyInstance DestroyInstance is signalled when an instance of a component is about to be destroyed Inherited from Gradient Brush (PRIM_VS.GradientBrush)

See also

All Component Classes

Technical Reference

LANSA Version 15, April 2020