TVirtualGrid

type TVirtualGrid = class

protected

  procedure doDestroyItem();

Destroys an Item at the given Row and Column location.

  procedure doNewItem();

Creates a new item at the location specified by Col and Row.

  procedure DeleteColRow();

Removes a column or a row in the grid.

  procedure MoveColRow();

Moves a column or a row using the specified index positions.

  procedure ExchangeColRow();

Exchanges values for the current column or row with those at the specified position.

  procedure InsertColRow();

Inserts either a column or a row at the specified index position.

  procedure DisposeCell(); virtual;

Disposes of the resources and the pointer for the given cell.

  procedure DisposeColRow(); virtual;

Disposes of the specified row or column, and frees its pointer.

  function IsColumnIndexValid();

Indicates if the specified ordinal column number is valid for the grid.

  function IsRowIndexValid();

Indicates if the specified ordinal row number is valid for the grid.

public

  constructor Create;

Constructor for the class instance.

  destructor Destroy; override;

Destructor for the class instance.

  procedure Clear;

Clears the content in the virtual grid.

  function GetDefaultCell;

Gets the default values for a new cell added to the grid.

  function GetDefaultColRow;

Gets a pointer to the default values used in the column and row properties when added to the instance.

  property ColCount: Integer; [rw]

Number of columns defined for the grid.

  property RowCount: Integer; [rw]

Number of rows defined for the grid.

  property Celda []: PCellProps; [rw]

Provides indexed access to cell properties by their column and row numbers.

  property Cols []: PColRowProps; [rw]

Provides indexed access to column properties by their ordinal column number.

  property Rows []: PColRowProps; [rw]

Provides indexed access to row properties by their ordinal row number.

end;

TVirtualGrid

Implements a grid with metadata where rows and columns are stored as Pointer arrays.

TObject

TCustomDrawGrid

The base class for a custom-drawn grid control.