怎么能改变stringgrid的记录顺序,直接在stringgrid上拖拽。
1 aaaaa
2 bbbbb
3 ccccc
4 ddddd
5 eeeee
6 fffff
假设上面是2列,6行的一个grid。
如何能直接拖拽第六行,使它成为第一行,应该用stringgrid的那个事件来触发呀。
1 aaaaa
2 bbbbb
3 ccccc
4 ddddd
5 eeeee
6 fffff
假设上面是2列,6行的一个grid。
如何能直接拖拽第六行,使它成为第一行,应该用stringgrid的那个事件来触发呀。
{新建一个工程测试以下代码....凡本人答贴的代码, 99%已经过本人测试千万别说“能否再加个虚线框”......
}unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Grids;type
TMyStrGrid = class(TStringGrid)
private
FCanMove: Boolean;
FFrom, FTo: integer;
FStrs: TStringList;
public
procedure GridMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure GridMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
procedure GridMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
published
constructor Create(AOwner: TComponent); override;
destructor Destory;
end; TForm1 = class(TForm)
Button1: TButton;
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}{ TMyStrGrid }procedure TMyStrGrid.GridMouseDown(Sender: TObject;
Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
I: integer;
begin
Self.FCanMove := True;
FFrom := Self.Row;
FStrs.Clear;
for I := 0 to Self.ColCount-1 do
FStrs.Add(Self.Cells[I, FFrom]);
end;procedure TMyStrGrid.GridMouseMove(Sender: TObject; Shift: TShiftState;
X, Y: Integer);
var
C, R: Integer;
begin
Self.MouseToCell(X, Y, C, R);
if Self.FCanMove then FTo := R;
Form1.Caption := InttoStr(FTo);
end;procedure TMyStrGrid.GridMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
I: integer;
begin
if Self.FCanMove and (FFrom<>FTo) then begin
MoveRow(FFrom, FTo);
for I := 0 to Self.ColCount-1 do
Self.Cells[I, FTo] := FStrs[I];
end;
Self.FCanMove := False;
end;constructor TMyStrGrid.Create(AOwner: TComponent);
begin
inherited;
FStrs := TStringList.Create;
OnMouseDown := Self.GridMouseDown;
OnMouseMove := Self.GridMouseMove;
OnMouseUp := Self.GridMouseUp;
end;destructor TMyStrGrid.Destory;
begin
FStrs.Free;
inherited;
end;{TForm1}procedure TForm1.FormCreate(Sender: TObject);
var
I, J: integer;
MyGrid: TMyStrGrid;
begin
MyGrid := TMyStrGrid.Create(Self);
with MyGrid do begin
Top := 30;
Left := 30;
Width := 500;
Height := 300;
Parent := Self;
end;
for I := 1 to MyGrid.ColCount-1 do
for J := 1 to MyGrid.RowCount-1 do
MyGrid.Cells[I,J] := Format('%d,%d',[I,J]);
end;end.