给DBGrid添加鼠标滚动事件

interface

uses

Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, DB, ADODB, Grids, DBGrids;

type

TForm1 = class(TForm)

DBGrid1: TDBGrid;

ADOTable1: TADOTable;

DataSource1: TDataSource;

procedure FormCreate(Sender: TObject);

private

Procedure OnMouseWheel(Var Msg :TMsg;var Handled:Boolean);

{ Private declarations }

public

{ Public declarations }

end;

var

Form1: TForm1;

implementation

{$R *.dfm}

//------------------------------------------------------------------------------

Procedure TForm1.OnMouseWheel(Var Msg :TMsg;var Handled:Boolean);

begin

if Msg.message = WM_MouseWheel then

begin

if Msg.wParam > 0 then

begin

if DBGrid1.Focused then

SendMessage(DBGrid1.Handle,WM_VSCROLL,SB_PAGEUP,0);

end

else

begin

if DBGrid1.Focused then

SendMessage(DBGrid1.Handle,WM_VSCROLL,SB_PAGEDOWN,0);

end;

Handled:= True;

end;

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

Application.OnMessage:=OnMouseWheel; // 截获鼠标滚动事件

end;