TOnPrepareCanvasEvent procedure type

In unit Grids

Specifies an event handler signalled when preparing the canvas for a grid control.

Declaration

pascal

TOnPrepareCanvasEvent = procedure(Sender: TObject; aCol: Integer; 
 aRow: Integer; aState: TGridDrawState)
 of object

Arguments

`Sender`	Grid control for the event notification.
`aCol`	Column number for the cell in the event notification.
`aRow`	Row number for the cell in the event notification.
`aState`	Grid drawing state for the cell in the event notification.

Description

TOnPrepareCanvasEvent specifies an event handler signalled when the canvas for a grid control is prepared for rendering. TOnPrepareCanvasEvent allows the canvas for the grid control to be configured prior to rendering cell data.

Sender is the grid control triggering the event notification.

ACol and ARow are the column and row numbers (respectively) for the grid cell in the event notification.

AState contains the grid drawing state for the cell data.

TOnPrepareCanvasEvent is the type used to implement the OnPrepareCanvas in TCustomGrid. Applications must implement an object procedure using the event signature to respond to the event notification.

TOnPrepareCanvasEvent procedure type

Declaration

Arguments

Description

See also