如何拦截滚动条消息 各位大虾,我是用c++ builder开发的一个程序,应当和Delphi差不多吧!我如何拦截一个scrollbox控件的滚动消息呢?求救呀! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 unit Unit1;interfaceuses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;type TForm1 = class(TForm) Button1: TButton; Memo1: TMemo; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; TMyScrollBar = class(TScrollBar) private i : Integer; procedure CNHScroll(var Message: TWMHScroll); message CN_HSCROLL; public constructor Create(AOwner: TComponent); override; end;var Form1: TForm1;implementation{$R *.DFM}{ TMyScrollBar }procedure TMyScrollBar.CNHScroll(var Message: TWMHScroll);begin TForm1(parent).Memo1.Lines.Append(IntToStr(i)); i := i + 1; inherited;end;procedure TForm1.Button1Click(Sender: TObject);var myScrollBar :TMyScrollBar;begin myScrollBar := TMyScrollBar.Create(Self); myScrollBar.Parent := Self; myScrollBar.Show;end;constructor TMyScrollBar.Create(AOwner: TComponent);begin inherited; i := 1; Max := 10;end;end. WebBrowser的问题 测试... 关于数据库问题 初次面试,急求相关信息 如何设定DBGrid的某一列显示格式为百分号? Hubdog写的《delphi深度探索第二版》抄袭delphi infomant杂志的内容 大家来帮忙关于IP地址的 200分相赠---谁知道那里可以下载《borland 传奇》 一个简单的查询问题 窗口移动操作,请教。(急) 急,急,如何连接数据库 如何在Delphi程序中扫描出注册表中的无用信息,并删除?最好有代码
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls;type
TForm1 = class(TForm)
Button1: TButton;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end; TMyScrollBar = class(TScrollBar)
private
i : Integer;
procedure CNHScroll(var Message: TWMHScroll); message CN_HSCROLL;
public
constructor Create(AOwner: TComponent); override;
end;var
Form1: TForm1;implementation{$R *.DFM}{ TMyScrollBar }procedure TMyScrollBar.CNHScroll(var Message: TWMHScroll);
begin
TForm1(parent).Memo1.Lines.Append(IntToStr(i));
i := i + 1;
inherited;
end;procedure TForm1.Button1Click(Sender: TObject);
var
myScrollBar :TMyScrollBar;
begin
myScrollBar := TMyScrollBar.Create(Self);
myScrollBar.Parent := Self;
myScrollBar.Show;
end;constructor TMyScrollBar.Create(AOwner: TComponent);
begin
inherited;
i := 1;
Max := 10;
end;end.