TCustomLayer.HitTest

function HitTest(X, Y: Integer): Boolean;

Description

Performs a hit test of the layer at specified point and returns True if the point have passed the test.

After performing default hit test, specific for particular type of a layer, this method also calls OnHitTest event, in case you need some run-time customization.

By default:

TCustomLayer always passes the hit test;
TPositionedLayer passes only the points lying inside the rectangle, returned by GetAdjustedLocation;
Depending on the AlphaHit property, TBitmapLayer is capable of passing only coordinates corresponding to non-transparent pixels.

TCustomLayer.HitTest

Description

See Also