to 楼主:不管答案如何,以下只是想对你说: 即使你的窗体上有几十几百个Edit,只要他们的OnChange或OnKeyPress处理过程相同,也是很简单的:procedure TForm1.FormCreate(Sender: TObject); var I : integer; begin for I := Self.ComponentCount-1 downto 0 do if Self.Components[I] is TEdit then begin TEdit(Self.Components[I]).OnChange := EditChange; TEdit(Self.Components[I]).OnKeyPress := EditKeyPress; end; end;procedure TForm1.EditChange(Sender: TObject); begin Self.Memo1.Lines.Add(Format('%s BeChanged', [TEdit(Sender).Name])); end;procedure TForm1.EditKeyPress(Sender: TObject; var Key: Char); begin Self.Memo1.Lines.Add(Format('%s KeyPress %s', [TEdit(Sender).Name, Key])); end;
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls;
const
WM_TestMessage = WM_USER + 2000;
type
TForm1 = class(TForm)
Button1: TButton;
procedure FormCreate(Sender: TObject);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.DFM}
var
HookHandle: HHOOK;function TestHookProc(Code: Integer; WParam: Longint;Msg:Longint): Longint;stdcall;
begin
if (Code = HC_ACTION) then
if PMsg(Msg)^.Message = WM_TestMessage then
begin
showMessage('已经截获该消息');
end;
Result := CallNextHookEx(HookHandle, Code, WParam, Longint(@Msg));
end;procedure TForm1.FormCreate(Sender: TObject);
begin
HookHandle:=SetWindowsHookEx(WH_GETMESSAGE,TestHookProc,0,GetCurrentThreadID);
end;procedure TForm1.Button1Click(Sender: TObject);
begin
PostMessage(self.Handle,WM_TestMessage,0,0);
end;end.
即使你的窗体上有几十几百个Edit,只要他们的OnChange或OnKeyPress处理过程相同,也是很简单的:procedure TForm1.FormCreate(Sender: TObject);
var
I : integer;
begin
for I := Self.ComponentCount-1 downto 0 do
if Self.Components[I] is TEdit then begin
TEdit(Self.Components[I]).OnChange := EditChange;
TEdit(Self.Components[I]).OnKeyPress := EditKeyPress;
end;
end;procedure TForm1.EditChange(Sender: TObject);
begin
Self.Memo1.Lines.Add(Format('%s BeChanged', [TEdit(Sender).Name]));
end;procedure TForm1.EditKeyPress(Sender: TObject; var Key: Char);
begin
Self.Memo1.Lines.Add(Format('%s KeyPress %s', [TEdit(Sender).Name, Key]));
end;
一楼的代码有点长,我可以借此学HOOK,但还需要时间消化.
我是VB转过来的.不过,好像有个更直接的方法.定义并写了一个editchange子过程,然后选定全部edit控件,在对象检查器的事件项里的onChange 选择editchange子过程,运行程序,刚才选定的edit控件的onchange事件是执行editchange子过程的代码的.这样做,和三楼朋友的有什么区别?
你那样做,方法赋值的代码在.dfm文件里(耐心找找看)
既使这样赋值,也是可以动态改变的
还有一个区别,就是你需要重复对象管理器的同一个操作,重复性的劳动量挺大的
三楼的朋友的方法不错
该方法通用性强,
而且简单,
在Onchange时速度要快