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Gets the ordinal position in Columns for the visible column specified in ColumnIndex.
Source position: grids.pas line 1125
protected function TCustomGrid.GridColumnFromColumnIndex( |
ColumnIndex: Integer |
):Integer; |
ColumnIndex |
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Ordinal position for the visible column to locate in the Columns collection. |
Ordinal position in Columns for the visible column in ColumnIndex.
GridColumnFromColumnIndex is an Integer function used to get the position in Columns for the visible column represented by ColumnIndex. It is necessary because a grid can include 0 or more fixed columns. This is a problem because: A) the fixed columns are both optional and variable, and B) the Columns collection uses ordinal values and never includes a column definition for fixed column.
ColumnIndex refers to the ordinal position for a visible column in the display area for the grid control. The return value is calculated as ColumnIndex + FirstGridColumn. In previous versions of the LCL, the value was derived using values from VisibleIndex and FixedCols.
The return value is -1 if the computed value is larger than ColCount-1.
GridColumnFromColumnIndex is used when a new value is assigned to the Index property in a TGridColumn instance. It is also used in the DialogChar method to locate and perform the OnClick handler for the column header where an accelerator key is found.
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Gets the position of the first column after any fixed columns in the grid. |
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The number of fixed columns in the grid. |
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Applies an accelerator key for a column in the grid. |
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Implements a column definition used for tabular data in TCustomGrid. |
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| Version 4.0 | Generated 2025-05-03 | Home |