[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Grids' (#lcl)

TCustomGrid.GetImageForCheckBox

Gets the bitmap used to draw check box columns in the grid.

Declaration

Source position: grids.pas line 1105

protected procedure TCustomGrid.GetImageForCheckBox(

  const aCol: Integer;

  const aRow: Integer;

  CheckBoxView: TCheckBoxState;

  var ImageList: TCustomImageList;

  var ImageIndex: TImageIndex;

  var Bitmap: TBitmap

); virtual;

Arguments

aCol

  

Column number for the check box cell.

aRow

  

Row number for the check box cell.

CheckBoxView

  

Checkbox state for the cell.

ImageList

  

Image list with images used for check box drawing states.

ImageIndex

  

Ordinal position of the image used for the corresponding check box state.

Bitmap

  

Bitmap with the image drawn for the check box state.

Description

GetImageForCheckBox signals the OnUserCheckboxBitmap event handler (when assigned) to get a bitmap used for the check box state. If a valid TBitmap instance is not assigned in the event handler, the OnUserCheckBoxImage event handler is signalled (when assigned) to get the TImageList, TBitmap, and ImageIndex used for the purpose.

GetImageForCheckBox is used in the implementation of the DrawGridCheckboxBitmaps and DrawCellText methods in TCustomGrid.

See also

TCustomGrid.OnUserCheckboxBitmap

  

Event handler signalled to get the user-defined bitmap used for a check box cell.

TCustomGrid.OnUserCheckboxImage

  

Event handler signalled to get the user-defined image used for a check box cell.

TCustomGrid.DrawGridCheckboxBitmaps

  

Draws a check box bitmap which represents the given state in a cell.

TCustomGrid.DrawCellText

  

Draws the specified text in the given text rectangle.
Version 4.0 Generated 2025-05-03 Home