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  ±è¿µ´ë(2003-03-07 19:57:45, Hit : 3785, Vote : 1022
 µÎ°³ÀÇ StringGrid sync ¸¶Ãß±â

unit SyncStringGrid;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
Dialogs,
  Grids;

type
  TSyncKind = (skBoth, skVScroll, skHScroll);
  TSyncStringGrid = class(TStringGrid)
  private
    FInSync: Boolean;
    FsyncGrid: TSyncStringGrid;
    FSyncKind: TSyncKind;
    { Private declarations }

    Procedure WMVScroll( Var Msg: TMessage ); message WM_VSCROLL;
    Procedure WMHScroll( Var Msg: TMessage ); message WM_HSCROLL;
  protected
    { Protected declarations }
  public
    { Public declarations }
    Procedure DoSync( msg, wparam: Integer; lparam: longint ); virtual;
  published
    { Published declarations }
    property SyncGrid: TSyncStringGrid read FSyncGrid write FSyncGrid;
    property SyncKind: TSyncKind read FSyncKind write FSyncKind default skBoth;
  end;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('Samples', [TSyncStringGrid]);
end;

Procedure TSyncStringGrid.WMVScroll( Var Msg: TMessage );
Begin
  If not FInSync and
     Assigned( FSyncGrid ) and
     (FSyncKind In [skBoth, skVScroll])
  Then
    FSyncGrid.DoSync( WM_VSCROLL, msg.wparam, msg.lparam );
  inherited;
End;

Procedure TSyncStringGrid.WMHScroll( Var Msg: TMessage );
Begin
  If not FInSync and
     Assigned( FSyncGrid ) and
     (FSyncKind In [skBoth, skHScroll])
  Then
    FSyncGrid.DoSync( WM_HSCROLL, msg.wparam, msg.lparam );
  inherited;
End;

Procedure TSyncStringGrid.DoSync( msg, wparam: Integer; lparam: longint );
Begin
  FInSync := True;
  Perform( msg, wparam, lparam );
  FinSync := False;
End;

end.





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