CODEWITHSUNDEEP
delphigridwidthstretch
Diogo Garcia
Diogo Garcia

Reputation: 594

How do I make a StringGrid's columns fit the grid's width?

I've been looking for a long time for a solution without any luck. Does anyone know a simple way to do that? I would like to stretch for example the second colum of my grid to fit the grid's width!

Upvotes: 8

Views: 23238

Answers (5)

Rashid Hasanov
Rashid Hasanov

Reputation: 21

Allows you to dynamically resize columns depending on the size of the container, given the dimensions of the content.

Call AutoSizeGridColumns when resizing occurs and pass it a TStringGrid object

    procedure AutoSizeGridColumns(Grid: TStringGrid);
    var
      ACol, ARow: Integer;
      GridWidth, ColWidth, ColsCount: Integer;
      ColWidthDifferenceWidth, ColMinWidth, ColsSumWidth: Integer;
    begin
      GridWidth := Grid.Width;
      ColsCount := Grid.ColCount;      
      ColWidth := 0;
      ColsSumWidth := 0;
      ColWidthDifferenceWidth := 0;
    
      Grid.Canvas.Font.Assign(Grid.Font);
      for ACol := 0 to ColsCount - 1 do
      begin
    
        for ARow := 0 to Grid.RowCount - 1 do
        begin
          ColMinWidth := Grid.Canvas.TextWidth(Grid.Cells[ACol, ARow]);
        end;
    
        ColsSumWidth := ColsSumWidth + ColMinWidth;
        Grid.ColWidths[ACol] := ColMinWidth;
      end;
           
      if ColsSumWidth < GridWidth then
        begin
          ColWidthDifferenceWidth := (GridWidth - ColsSumWidth) div ColsCount - 1;
    
          for ACol := 0 to ColsCount - 1 do
          begin
            Grid.ColWidths[ACol] := Grid.ColWidths[ACol] + ColWidthDifferenceWidth;
          end;
        end
      else
        begin
          ColWidthDifferenceWidth := (ColsSumWidth - GridWidth) div ColsCount;
    
          for ACol := 0 to ColsCount - 1 do
          begin
            Grid.ColWidths[ACol] := Grid.ColWidths[ACol] - ColWidthDifferenceWidth;
          end;
        end;
    end;

Upvotes: 1

Kaci
Kaci

Reputation: 51

even better like this :

procedure AutoSizeGridColumns(Grid: TStringGrid);
const
  MIN_COL_WIDTH = 15;
var
  Col : Integer;
  ColWidth, CellWidth: Integer;
  Row: Integer;
begin
  Grid.Canvas.Font.Assign(Grid.Font);
  for Col := 0 to Grid.ColCount -1 do
  begin
    ColWidth := Grid.Canvas.TextWidth(Grid.Cells[Col, 0]);
    for Row := 0 to Grid.RowCount - 1 do 
    begin
      CellWidth := Grid.Canvas.TextWidth(Grid.Cells[Col, Row]);
      if CellWidth > ColWidth then
        ColWidth := CellWidth
    end;
    Grid.ColWidths[Col] := ColWidth + MIN_COL_WIDTH;
  end;
end;

Upvotes: 3

Kaci
Kaci

Reputation: 51

The following code works with FixedCols = 0 (to adapt for other values, ex: FixedCols = 1 ==> for Col := 1 to ...) 

procedure AutoSizeGridColumns(Grid: TStringGrid);
const
  MIN_COL_WIDTH = 15;
var
  Col : Integer;
  ColWidth, CellWidth: Integer;
  Row: Integer;
begin
  Grid.Canvas.Font.Assign(Grid.Font);
  for Col := 0 to Grid.ColCount -1 do
  begin
    ColWidth := Grid.Canvas.TextWidth(Grid.Cells[Col, 0]);
    for Row := 0 to Grid.RowCount - 1 do 
    begin
      CellWidth := Grid.Canvas.TextWidth(Grid.Cells[Col, Row]);
      if CellWidth > ColWidth then
        Grid.ColWidths[Col] := CellWidth + MIN_COL_WIDTH
      else
        Grid.ColWidths[Col] := ColWidth + MIN_COL_WIDTH;
    end;
  end;
end;

Upvotes: 2

Peter Richard
Peter Richard

Reputation: 21

Solution If there are more doubts command "grid.AutoFitColumns()" Where grid is one "TAdvStringGrid";

;)

Upvotes: 0

NGLN
NGLN

Reputation: 43669

Use the ColWidths property, like so:

with StringGrid1 do
  ColWidths[1] := ClientWidth - ColWidths[0] - 2 * GridLineWidth;

And for a more robust and flexible solution, take all fixed columns into account and parameterize the column index:

procedure SetColumnFullWidth(Grid: TStringGrid; ACol: Integer);
var
  I: Integer;
  FixedWidth: Integer;
begin
  with Grid do
    if ACol >= FixedCols then
    begin
      FixedWidth := 0;
      for I := 0 to FixedCols - 1 do
        Inc(FixedWidth, ColWidths[I] + GridLineWidth);
      ColWidths[ACol] := ClientWidth - FixedWidth - GridLineWidth;
    end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  SetColumnFullWidth(StringGrid1, 4);
end;

Upvotes: 10

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