csDesigning
csDesigning = 4
Example
function IsDesigning(const State: TComponentState): Boolean;
begin
Result := csDesigning in State;
end;
Usage
csDesigning marks a component that belongs to a form or design surface currently being manipulated at design time.
Additional Technical Info
csDesigning is member ordinal 4 of the component-state element enumeration and a flag in TComponentState. It reports that the component is part of a form/design hierarchy being manipulated by a designer.
Most Velox execution occurs at runtime, so this flag is normally absent. Its presence is not a supported way for a script to switch product mode, suppress validation or assume that external services are safe to call. Design-time code can still load properties and invoke framework hooks.
The flag propagates through component ownership relationships and can accompany csAncestor, csInline or csDesignInstance. Treat it as read-only context and test it with set membership. The example is source-reviewed only; no designer was run.
External references
- Embarcadero TComponentState - design-state meaning.
- Free Pascal TComponentState - compatible state set.