Delphi 攔截滾輪事件不響應滾輪的上下滾動
unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls;
type TForm1 = class(TForm)
Panel1: TPanel; ComboBox1: TComboBox; Label1: TLabel; procedure FormCreate(Sender: TObject); private { Private declarations }
Procedure OnMouseWheel(Var Msg: TMsg; var Handled: Boolean);
public { Public declarations }
end;
var Form1: TForm1;
implementation {$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
Application.OnMessage := OnMouseWheel;
end;
procedure TForm1.OnMouseWheel(var Msg: TMsg; var Handled: Boolean);
begin
if Msg.message = WM_MOUSEWHEEL then
if （ActiveControl IS TComboBox） or （ActiveControl IS TStringGrid） then//TComboBox和 TStringGrid不響應滾輪
Handled := True;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
Application.OnMessage := nil;
end;
end.
http://www.cnblogs.com/tulater/p/6401799.html
Delphi 攔截滾輪事件不響應滾輪的上下滾動