Mega Code Archive
Timercomponentdiy
<![CDATA[
> the old pascal delay method seems to gone fishing.
> how do I do that in delphi 5?
hi..
this is a common question. i see many people have suggested just using the
sleep API. you could do this - but why not wrap it in a component and
leverage your OO programming skills and delphi at the same time.
below is a small component i wrote in D5 that does this.
have fun
mark
(*
this code is the property of Mark Meyer and LOGS Financial Service
Inc., Northbrook, Illinois
Copyright October 2000.
this code is contributed to the Delphi developer community. it is
submitted for
public use "as is" and is meant to provide a basis on which others can
learn and build.
this code wraps the windows Sleep API into a D5 component and includes an
OnBeforeSleep and
OnAfterSleep event.
if this code and component is of any benefit to you - please "keep the
wheel turning" by
helping others when and where you can in the programming community.
if you have any questions please contact me.
thx
mark meyer
wk: markm.hq@logs.com
hm: geeky2@gte.net
*)
unit nap;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;
type
TBeforeSleepEvent = procedure(sender: TObject; var accept: Boolean)
of object;
TAfterSleepEvent = procedure(sender : TObject) of object;
type
TSleep = class(TComponent)
private
{ Private declarations }
FSleepTime: integer;
FOnBeforeSleep: TBeforeSleepEvent;
FOnAfterSleep: TAfterSleepEvent;
function GetSleepTime : integer;
procedure SetSleepTime (value : integer);
protected
{ Protected declarations }
public
{ Public declarations }
constructor Create( AOwner: TComponent ); override;
destructor Destroy; override;
procedure GoToSleep;
published
{ Published declarations }
property SleepTime : integer read GetSleepTime write
SetSleepTime;
property OnBeforeSleep: TBeforeSleepEvent read
FOnBeforeSleep write FOnBeforeSleep;
property OnAfterSleep: TAfterSleepEvent read FOnAfterSleep
write FOnAfterSleep;
end;
procedure Register;
implementation
constructor TSleep.Create( AOwner: TComponent );
begin
inherited create(AOwner);
FSleepTime := 1000;
end;
destructor TSleep.Destroy;
begin
inherited destroy;
end;
procedure TSleep.GoToSleep;
var
accept : boolean;
begin
accept := true;
if Assigned(FOnBeforeSleep) then begin
FOnBeforeSleep(Self, accept);
end;{if}
if (accept) then begin
Sleep(SleepTime);
end;{if}
if Assigned(FOnAfterSleep) then begin
FOnAfterSleep(Self);
end;{if}
end;
function TSleep.GetSleepTime : integer;
begin
result := FSleepTime;
end;
procedure TSleep.SetSleepTime (value : integer);
begin
if (FSleepTime <> value) then begin
FSleepTime := value;
end;{if}
end;
procedure Register;
begin
RegisterComponents('LOGS', [TSleep]);
end;
end.
]]>