TCustomGrid.DefaultColWidth Property

Determines the width (in pixels) of all columns that have not been explicitly resized.

Pascal

property DefaultColWidth: Integer;

C++

__property int DefaultColWidth;

Description

Set DefaultColWidth to change the size of all columns in the grid. When DefaultColWidth is set, columns that have been resized using the mouse or by setting the ColWidths property are given the DefaultColWidth as well.

When new columns are added to the grid using the ColCount property, they are created with a width of DefaultColWidth.

C++ Examples:

Copy Code

/*
The following code uses the bitmaps in an image list
component to draw the contents of each cell in a draw grid.
This example includes a draw grid on a form. When the
application runs and the form is created, the width of the
lines on the draw grid changes if the default column width of
the grid is over 90 pixels wide.  This example requires a
populated image list, or can just display an empty grid.
Set the drawgrid DefaultColWidth and GridLineWidth statically
to values the cause the button click to do something.
*/
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  if (DrawGrid1->DefaultColWidth > 90)
    DrawGrid1->GridLineWidth = 2;
  else
    DrawGrid1->GridLineWidth = 1;
}

void __fastcall TForm1::DrawGrid1DrawCell(TObject *Sender, int ACol, int ARow, TRect &Rect,
          TGridDrawState State)
{
  int index = ARow * DrawGrid1->ColCount + ACol;
  DrawGrid1->Canvas->Brush->Color = clBackground;
  DrawGrid1->Canvas->FillRect(Rect);
  ImageList1->Draw(DrawGrid1->Canvas, Rect.Left, Rect.Top, index, True);
  if (State.Contains(gdFocused))
  {
    DrawGrid1->Canvas->DrawFocusRect(Rect);
  }
}

void __fastcall TForm1::DrawGrid1SelectCell(TObject *Sender, int ACol, int ARow, bool &CanSelect)

{
  CanSelect = True;
}

Delphi Examples:

Copy Code

{
The following code uses the bitmaps in an image list
component to draw the contents of each cell in a draw grid.
This example includes a draw grid on a form. When the
application runs and the form is created, the width of the
lines on the draw grid changes if the default column width of
the grid is over 90 pixels wide.  This example requires a
populated image list, or can just display an empty grid.
Set the drawgrid DefaultColWidth and GridLineWidth statically
to values the cause the button click to do something.
} 
procedure TForm1.Button1Click(Sender: TObject);
begin
  if DrawGrid1.DefaultColWidth > 90 then
    DrawGrid1.GridLineWidth := 2
  else
    DrawGrid1.GridLineWidth := 1;
end;

procedure TForm1.DrawGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
  Rect: TRect; State: TGridDrawState);
var
  index: Integer;
begin
  index := ARow * DrawGrid1.ColCount + ACol;
  DrawGrid1.Canvas.Brush.Color := clBackground;
  DrawGrid1.Canvas.FillRect(Rect);
  ImageList1.Draw(DrawGrid1.Canvas,Rect.Left,Rect.Top,index, True);
  if (gdFocused in State) then
  begin
    DrawGrid1.Canvas.DrawFocusRect(Rect);
  end;
end;

procedure TForm1.DrawGrid1SelectCell(Sender: TObject; ACol, ARow: Integer;
  var CanSelect: Boolean);
begin
  CanSelect:= True;
end;