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Docs: LCL/grids. Updates content in TColumnButtonStyle, TGridColumn, and TGridColumns topics.
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@ -823,7 +823,9 @@ Not used in the current LCL implementation.
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</element>
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<element name="TColumnButtonStyle">
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<short>Enumeration with cell editor types available in a grid control.</short>
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<short>
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Enumeration with cell editor types available in a grid control.
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</short>
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<descr>
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<p>
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<var>TColumnButtonStyle</var> is an enumerated type with values that
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@ -4788,9 +4790,7 @@ called.
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</element>
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<element name="TGridColumn.GetDisplayName" link="#rtl.Classes.TCollectionItem.GetDisplayName"/>
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<element name="TGridColumn.GetDisplayName.Result">
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<short/>
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</element>
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<element name="TGridColumn.GetDisplayName.Result"/>
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<element name="TGridColumn.GetDefaultAlignment">
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<short>Gets the default value for the Alignment property.</short>
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@ -5131,35 +5131,113 @@ adjust the font PPI to the value specified in ADesignTimePPI.
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<element name="TGridColumn.ScaleFontsPPI">
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<short>
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Scales fonts on the column and the grid control using a scaling factor.
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Scales the fonts for the column to a specified display density using a
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scaling factor.
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</short>
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<descr/>
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<seealso/>
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<descr>
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<p>
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<var>ScaleFontsPPI</var> is a method used to scale the height for fonts used
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to display the data and title in the grid column. It implements the method
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introduced in TControl, and applies the operation to the fonts used in the
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TGridColumn instance. It is called from the ScaleFontsPPI method in
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TCustomGrid when Columns have been defined for the grid control.
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</p>
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<p>
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ScaleFontsPPI calls the The DoScaleFontPPI method in Grid to adjust the
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control font using the arguments in AToPPI and AProportion.
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</p>
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<p>
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AToPPI contains the pixels per inch value assigned to the fonts used when a
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non-zero value is specified. If AToPPI is omitted (0), the scaling factor in
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AProportion is used to scale the existing PixelsPerInch setting in the fonts
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by the factor in AProportion.
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</p>
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<p>
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The ScaleFontsPPI method in Title is called to adjust the font used in the
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fixed title displayed for the column. It uses the same logic applied to the
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control Font.
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</p>
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<p>
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ScaleFontsPPI is called when the AutoAdjustLayout method is used to apply a
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layout policy to a control.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.Grid"/>
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<link id="TGridColumn.Font"/>
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<link id="TGridColumn.Title"/>
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<link id="TGridColumnTitle.ScaleFontsPPI"/>
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<link id="TDrawGrid.Font"/>
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<link id="TStringGrid.Font"/>
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<link id="TCustomGrid.TitleFont"/>
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<link id="TCustomGrid.ScaleFontsPPI"/>
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<link id="#lcl.controls.TControl.ScaleFontsPPI">TControl.ScaleFontsPPI</link>
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</seealso>
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</element>
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<element name="TGridColumn.ScaleFontsPPI.AToPPI">
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<short/>
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<short>
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Target pixels per inch for the fonts in the grid column.
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</short>
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</element>
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<element name="TGridColumn.ScaleFontsPPI.AProportion">
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<short/>
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<short>
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Scaling factor applied to pixels per inch when aToPPI is 0.
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</short>
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</element>
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<element name="TGridColumn.IsDefault">
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<short><b>True</b> if the column is the default column in the grid.</short>
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<descr/>
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<seealso/>
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<short>
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Indicates if default layout settings are used for the grid column.
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</short>
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<descr>
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<p>
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<var>IsDefault</var> is a <var>Boolean</var> function used to determine if
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the grid column uses default values in properties used to layout and
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configure the class instance. The return value is <b>True</b> when all of the
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following conditions are met:
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</p>
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<ul>
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<li>Alignment is unassigned (<b>Nil</b>).</li>
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<li>Color is unassigned (<b>Nil</b>).</li>
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<li>ReadOnly is unassigned (<b>Nil</b>).</li>
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<li>Width is unassigned (<b>Nil</b>).</li>
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<li>Layout is unassigned (<b>Nil</b>).</li>
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<li>MaxSize is unassigned (<b>Nil</b>).</li>
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<li>MinSize is unassigned (<b>Nil</b>).</li>
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<li>SizePriority is unassigned (<b>Nil</b>).</li>
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<li>IsDefaultFont returns <b>True</b>.</li>
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<li>Title uses default settings.</li>
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</ul>
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<p>
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IsDefault is used during LCL component streaming to determine whether items
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in the Columns collection need to be included in the resource stream when the
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private WriteColumns method is called.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumns.IsDefault"/>
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<link id="TCustomGrid.Columns"/>
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</seealso>
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</element>
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<element name="TGridColumn.IsDefault.Result">
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<short/>
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<short>
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<b>True</b> if the column uses its default settings.
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</short>
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</element>
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<element name="TGridColumn.Grid">
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<short>The <var>Grid</var> to which this column belongs.</short>
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<descr/>
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<seealso/>
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<seealso>
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<link id="TCustomGrid"/>
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<link id="TCustomGrid.Columns"/>
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</seealso>
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</element>
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<element name="TGridColumn.DefaultWidth">
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<short>Default width for the column, or -1 when not assigned.</short>
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<short>
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Default width for the column, or -1 when not assigned.
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</short>
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<descr>
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<p>
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<var>DefaultWidth</var> is a read-only <var>Integer</var> property with the
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@ -5188,128 +5266,378 @@ an explicit value has not been assigned in Width, the property value is -1.
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</element>
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<element name="TGridColumn.WidthChanged">
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<short><b>True</b> when the width for the column has been changed.</short>
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<descr/>
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<seealso/>
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<short>
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<b>True</b> when the width for the column has been changed.
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</short>
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<descr>
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<p>
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Set to <b>True</b> when an explicit value is assigned to the Width property.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.DefaultWidth"/>
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<link id="TGridColumn.StoredWidth"/>
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</seealso>
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</element>
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<element name="TGridColumn.Alignment">
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<short>Whether the column is justified, centered, etc.</short>
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<descr/>
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<seealso/>
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<short>
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Indicates the alignment for values displayed in the column: left or right
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aligned, or centered.
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</short>
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<descr>
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<p>
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<var>Alignment</var> is a <var>TAlignment</var> property which indicates how
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data displayed in the column is aligned. If Alignment has not been assigned,
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the value from GetDefaultAlignment is used in the property. Changing the
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value for the property causes the ColumnChanged method to be called to update
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the collection item and reset the value in WidthChanged to <b>False</b>.
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</p>
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<p>
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Alignment is used when the Grid control prepares its Canvas to draw data
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cells in the column.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.ColumnChanged"/>
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<link id="TGridColumn.WidthChanged"/>
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<link id="TGridColumn.Grid"/>
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<link id="TGridColumns.Items"/>
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<link id="TCustomGrid.PrepareCanvas"/>
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<link id="TCustomGrid.DrawCellText"/>
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<link id="#rtl.classes.TCollectionItem">TCollectionItem</link>
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<link id="#rtl.classes.TAlignment">TAlignment</link>
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</seealso>
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</element>
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<element name="TGridColumn.ButtonStyle">
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<short>The style used for a button displayed in the column.</short>
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<descr/>
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<seealso/>
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<short>
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The style used for a button displayed for cells in the column.
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</short>
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<descr>
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<p>
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<var>ButtonStyle</var> is a <var>TColumnButtonStyle</var> property which
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indicates the button style used for cell editors displayed in the column. The
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default value is cbsAuto, and causes String-based editors with an Ellipsis
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button to be selected.
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</p>
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<p>
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See <link id="TColumnButtonStyle"/> for other values allowed used in the
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property, and their usage.
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</p>
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<p>
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Changing the value for the property causes the ColumnChanged method to be
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called to update the collection item and reset the value in WidthChanged to
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<b>False</b>.
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</p>
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<p>
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ButtonStyle is used when the GetDefaultEditor or EditorByStyle methods in
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Grid are called.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.ColumnChanged"/>
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<link id="TGridColumn.WidthChanged"/>
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<link id="TGridColumn.Grid"/>
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<link id="TGridColumns.Items"/>
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<link id="TCustomGrid.EditorByStyle"/>
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<link id="TCustomGrid.GetDefaultEditor"/>
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<link id="TColumnButtonStyle"/>
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<link id="TCompositeCellEditor"/>
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<link id="#rtl.classes.TCollectionItem">TCollectionItem</link>
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</seealso>
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</element>
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<element name="TGridColumn.Color">
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<short>Color used for the column.</short>
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<descr/>
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<seealso/>
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<short>
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Color for the background on the column.
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</short>
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<descr>
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<p>
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<var>Color</var> is a <var>TColor</var> property with the background color
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used when values in the grid column are drawn. If an explicit value has not
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been assigned for the property, the value from GetDefaultColor is used as the
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property value.
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</p>
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<p>
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Changing the value for the property causes the ColumnChanged method to be
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called to update the collection item in its collection.
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</p>
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<p>
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Use the Font.Color property to set the color for text drawn in the column.
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</p>
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<p>
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Use Title.Color and Title.Font color properties to set the colors for fixed
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cells drawn as grid column headers.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.Font"/>
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<link id="TGridColumn.Title"/>
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<link id="TGridColumnTitle.Color"/>
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<link id="TGridColumnTitle.Font"/>
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<link id="#rtl.classes.TCollectionItem">TCollectionItem</link>
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<link id="#lcl.graphics.TFont.Color">TFont.Color</link>
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</seealso>
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</element>
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<element name="TGridColumn.DropDownRows">
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<short>The number of rows in the drop-down list used in the column.</short>
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<descr/>
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<seealso/>
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<short>
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The number of rows displayed in the drop-down list for a cell editor in the
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column.
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</short>
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<descr>
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<p>
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<var>DropDownRows</var> is a <var>Longint</var> property with the number of
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rows displayed in the drop-down list for the cell editor in the column. The
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default value is 7.
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</p>
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<p>
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DropDownRows is assigned to the cell editor retrieved in the GetDefaultEditor
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method in the Grid control. It is relevant when the ButtonStyle for the
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column is set or resolved to cbsPicklist in the EditorByStyle method for the
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Grid control.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.ButtonStyle"/>
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<link id="TCustomGrid.GetDefaultEditor"/>
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<link id="TCustomGrid.EditorByStyle"/>
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<link id="TColumnButtonStyle"/>
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<link id="TPickListCellEditor"/>
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<link id="#lcl.stdctrls.TCustomComboBox.DropDownCount">TCustomComboBox.DropDownCount</link>
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</seealso>
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</element>
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<element name="TGridColumn.Expanded">
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<short>Whether the column has been Expanded.</short>
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<descr/>
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<seealso/>
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<short>
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Indicates if the drop-down list in the column cell editor is displayed in an
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expanded state.
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</short>
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<descr>
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<p>
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<var>Expanded</var> is a <var>Boolean</var> property which indicates if the
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drop-down list for the column cell editor is displayed in an expanded state.
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The default value for the property is <b>True</b>.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.ButtonStyle"/>
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<link id="TGridColumn.DropDownRows"/>
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<link id="TColumnButtonStyle"/>
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<link id="TPickListCellEditor"/>
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</seealso>
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</element>
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<element name="TGridColumn.Font">
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<short>The <var>Font</var> for the column.</short>
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<descr/>
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<seealso/>
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<short>
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The font used for text displayed in the column.
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</short>
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<descr>
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<p>
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<var>Font</var> is a <var>TFont</var> property which contains the typeface name and display attributes used to display text for cells in the grid column.
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By default, Font contains the same value assigned to the Grid control and
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loaded in the FillDefaultFont method. It is applied to the Canvas for the
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Grid and used in its DrawCellText method.
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</p>
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<p>
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Changing the value for the property causes IsDefaultFont to be set to
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<b>False</b>. The ColumnChanged method is called to update the collection
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item in the Columns collection for the Grid. The value in WidthChanged is
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also reset to <b>False</b>.
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</p>
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<p>
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Use the Font property in Title to set attributes for text displayed in the
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fixed header cells for the column.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.Title"/>
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<link id="TGridColumn.Grid"/>
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<link id="TGridColumn.ColumnChanged"/>
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<link id="TGridColumn.WidthChanged"/>
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<link id="TGridColumnTitle.Font"/>
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<link id="TCustomGrid.Columns"/>
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<link id="TCustomGrid.Font"/>
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<link id="TCustomGrid.PrepareCanvas"/>
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<link id="TCustomGrid.DrawCellText"/>
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<link id="#lcl.graphics.TFont">TFont</link>
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</seealso>
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</element>
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<element name="TGridColumn.Layout">
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<short>The <var>Layout</var> for text.</short>
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<descr/>
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<seealso/>
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<short>
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The layout (vertical alignment) for text displayed in the column.
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</short>
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<descr>
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<p>
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Use the Alignment property to set the horizontal alignment for text displayed
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in the non-fixed cells for the column.
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</p>
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<p>
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Use the Layout and Alignment properties in Title to control text displayed in
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the fixed cells for the column.
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</p>
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</descr>
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<seealso>
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<link id="TGridColumn.Alignment"/>
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<link id="TGridColumn.Title"/>
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<link id="TGridColumnTitle.Alignment"/>
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<link id="TGridColumnTitle.Layout"/>
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<link id="#lcl.graphics.TTextLayout">TTextLayout</link>
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</seealso>
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</element>
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<element name="TGridColumn.MinSize">
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<short>The minimum size for the column.</short>
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<short>
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The minimum size for the column in pixels.
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</short>
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<descr/>
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<seealso/>
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<seealso>
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<link id="TGridColumn.MaxSize"/>
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<link id="TGridColumn.Width"/>
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<link id="TCustomGrid.Columns"/>
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<link id="TCustomGrid.AutoFillColumns"/>
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</seealso>
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</element>
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<element name="TGridColumn.MaxSize">
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<short>The maximum size for the column.</short>
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<short>
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The maximum size for the column in pixels.
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</short>
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<descr/>
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<seealso/>
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<seealso>
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<link id="TGridColumn.MinSize"/>
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<link id="TGridColumn.Width"/>
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<link id="TCustomGrid.Columns"/>
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<link id="TCustomGrid.AutoFillColumns"/>
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</seealso>
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</element>
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<element name="TGridColumn.PickList">
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<short>
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The list of items that can be selected as the value for the column.
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The list of available items in the drop-down list for the column.
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</short>
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<descr/>
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<seealso>
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<link id="TGridColumn.ButtonStyle"/>
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<link id="TGridColumn.DropDownRows"/>
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<link id="TGridColumn.Expanded"/>
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<link id="TCustomGrid.EditorByStyle"/>
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<link id="TCompositeCellEditor"/>
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</seealso>
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</element>
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<element name="TGridColumn.ReadOnly">
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<short>
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<b>True</b> if the values in the column cannot be changed at run-time using
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a cell editor.
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</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TGridColumn.ReadOnly">
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<short><b>True</b> when the values in the column cannot be changed.</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TGridColumn.SizePriority">
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<short>The auto-sizing priority for the column.</short>
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<descr/>
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<seealso/>
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<short>
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The auto-sizing priority for the column.
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</short>
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<descr>
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<p>
|
||||
<b>0</b> indicates that the column is not one of the auto-sized columns in
|
||||
the Grid control. Any non-zero value causes the column width to be adjusted
|
||||
when AutoFillColumns is enabled in the Grid control.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso>
|
||||
<link id="TGridColumn.MinSize"/>
|
||||
<link id="TGridColumn.MaxSize"/>
|
||||
<link id="TGridColumn.Width"/>
|
||||
<link id="TGridColumn.Grid"/>
|
||||
<link id="TCustomGrid.Columns"/>
|
||||
<link id="TCustomGrid.AutoFillColumns"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TGridColumn.Tag">
|
||||
<short>Contains a Pointer to an Integer type.</short>
|
||||
<descr>
|
||||
<p>
|
||||
<var>Tag</var> is a <var>PtrInt</var> property which contains a numeric
|
||||
value. Its usage is implementation dependent.
|
||||
<var>Tag</var> is a <var>PtrInt</var> property which contains a pointer to an
|
||||
numeric integer value. It does not have any predefined usage in TGridColumn.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso/>
|
||||
</element>
|
||||
|
||||
<element name="TGridColumn.Title">
|
||||
<short>Text displayed as the column title.</short>
|
||||
<short>
|
||||
Text displayed as the title in the fixed header for the column.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
</element>
|
||||
|
||||
<element name="TGridColumn.Width">
|
||||
<short>The Width of the column.</short>
|
||||
<short>
|
||||
The display Width in pixels for the column on its Grid control.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<seealso>
|
||||
<link id="TGridColumn.MinSize"/>
|
||||
<link id="TGridColumn.MaxSize"/>
|
||||
<link id="TCustomGrid.Columns"/>
|
||||
<link id="TCustomGrid.AutoFillColumns"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TGridColumn.Visible">
|
||||
<short><b>True</b> if the column is visible (i.e. not hidden).</short>
|
||||
<short>
|
||||
<b>True</b> if the column is visible (not hidden).
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
</element>
|
||||
|
||||
<element name="TGridColumn.GetValueChecked">
|
||||
<short>Gets the checked value for a cell in the column.</short>
|
||||
<short>
|
||||
Gets the checked value for a check box cell in the column.
|
||||
</short>
|
||||
<seealso>
|
||||
<link id="TGridColumn.ValueChecked"/>
|
||||
<link id="TGridColumn.ButtonStyle"/>
|
||||
<link id="TColumnButtonStyle"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TGridColumn.GetValueUnchecked">
|
||||
<short>Gets the unchecked value for a cell in the column.</short>
|
||||
<short>
|
||||
Gets the unchecked value for a check box cell in the column.
|
||||
</short>
|
||||
<seealso>
|
||||
<link id="TGridColumn.ValueUnchecked"/>
|
||||
<link id="TGridColumn.ButtonStyle"/>
|
||||
<link id="TColumnButtonStyle"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TGridColumn.ValueChecked">
|
||||
<short>Value used for a checked cell in the column.</short>
|
||||
<short>
|
||||
Value used for a checked check box cell in the column.
|
||||
</short>
|
||||
<seealso>
|
||||
<link id="TGridColumn.ButtonStyle"/>
|
||||
<link id="TColumnButtonStyle"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TGridColumn.ValueUnchecked">
|
||||
<short>Value used for an unchecked cell in the column.</short>
|
||||
<short>
|
||||
Value used for an unchecked check box cell in the column.
|
||||
</short>
|
||||
<seealso>
|
||||
<link id="TGridColumn.ButtonStyle"/>
|
||||
<link id="TColumnButtonStyle"/>
|
||||
</seealso>
|
||||
</element>
|
||||
|
||||
<element name="TGridPropertyBackup">
|
||||
@ -5659,7 +5987,7 @@ Gets the grid column in the collection with the specified title.
|
||||
<descr>
|
||||
<p>
|
||||
Calls SameText to perform a case-insensitive comparison between the value in
|
||||
ATitle and the title in each of the collection items.
|
||||
ATitle and the title in each of the columns in the collection.
|
||||
</p>
|
||||
</descr>
|
||||
<seealso/>
|
||||
@ -5715,14 +6043,19 @@ collection or when <var>Column</var> cannot be located in the container.
|
||||
</element>
|
||||
|
||||
<element name="TGridColumns.IsDefault">
|
||||
<short><b>True</b> if the column contains default values only.</short>
|
||||
<short>
|
||||
<b>True</b> if the columns contain default values only.
|
||||
</short>
|
||||
<descr/>
|
||||
<seealso/>
|
||||
<seealso>
|
||||
<link id="TGridColumn.IsDefault"/>
|
||||
<link id="TGridColumnTitle.IsDefault"/>
|
||||
</seealso>
|
||||
</element>
|
||||
<element name="TGridColumns.IsDefault.Result">
|
||||
<short>
|
||||
<b>True</b> if the column uses a default title and contains no explicit
|
||||
property assignments.
|
||||
<b>True</b> if the columns use default settings in their column settings and
|
||||
titles, and contain no explicit property assignments.
|
||||
</short>
|
||||
</element>
|
||||
|
||||
@ -8406,6 +8739,7 @@ changed.
|
||||
<seealso/>
|
||||
</element>
|
||||
|
||||
<!-- private -->
|
||||
<element name="TCustomGrid.WriteColumns">
|
||||
<short>
|
||||
Writes the Columns collection using the specified TWriter instance.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user