david
78ab77cd4c
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.jvcl@19 7f62d464-2af8-f54e-996c-e91b33f51cbe
120 lines
3.1 KiB
ObjectPascal
120 lines
3.1 KiB
ObjectPascal
{******************************************************************
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JEDI-VCL Demo
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Copyright (C) 2002 Project JEDI
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Original author:
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Contributor(s):
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You may retrieve the latest version of this file at the JEDI-JVCL
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home page, located at http://jvcl.delphi-jedi.org
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The contents of this file are used with permission, subject to
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the Mozilla Public License Version 1.1 (the "License"); you may
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not use this file except in compliance with the License. You may
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obtain a copy of the License at
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http://www.mozilla.org/MPL/MPL-1_1Final.html
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Software distributed under the License is distributed on an
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"AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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implied. See the License for the specific language governing
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rights and limitations under the License.
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******************************************************************}
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unit DSAExamplesProgressDlg;
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interface
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uses
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Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
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StdCtrls, ComCtrls, JvProgressBar, JvExComCtrls;
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type
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TMsgProgressCallback = function(const Position, Max: Integer): Integer of object;
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TfrmDSAExamplesProgressDlg = class(TForm)
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lblItemCount: TLabel;
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edItems: TEdit;
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lblNote: TLabel;
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btnStart: TButton;
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btnCancel: TButton;
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pbProgress: TJvProgressBar;
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procedure FormResize(Sender: TObject);
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procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
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procedure btnStartClick(Sender: TObject);
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private
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{ Private declarations }
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DoMessage: TMsgProgressCallback;
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end;
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procedure DoProgress(const MessageCallback: TMsgProgressCallback);
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implementation
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uses
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JvDSADialogs;
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{$R *.DFM}
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procedure DoProgress(const MessageCallback: TMsgProgressCallback);
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begin
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with TfrmDSAExamplesProgressDlg.Create(Screen.ActiveForm) do
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try
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DoMessage := MessageCallback;
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ShowModal;
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finally
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Free;
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end;
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end;
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{ TfrmDSAExamplesProgressDlg }
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procedure TfrmDSAExamplesProgressDlg.FormResize(Sender: TObject);
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var
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TotCtrlW: Integer;
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Distance: Integer;
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begin
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TotCtrlW := btnCancel.Left + btnCancel.Width - btnStart.Left;
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Distance := btnCancel.Left - btnStart.Left;
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btnStart.Left := (ClientWidth - TotCtrlW) div 2;
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btnCancel.Left := btnStart.Left + Distance;
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end;
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procedure TfrmDSAExamplesProgressDlg.FormCloseQuery(Sender: TObject;
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var CanClose: Boolean);
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begin
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CanClose := btnStart.Enabled;
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end;
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procedure TfrmDSAExamplesProgressDlg.btnStartClick(Sender: TObject);
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var
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I: Integer;
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begin
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btnStart.Enabled := False;
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pbProgress.Position := 0;
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pbProgress.Max := StrToInt(edItems.Text);
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Application.ProcessMessages;
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try
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I := 1;
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while I <= pbProgress.Max do
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begin
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pbProgress.Position := I;
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Application.ProcessMessages;
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if DoMessage(I, pbProgress.Max) in [mrNo, mrCancel] then
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begin
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ShowMessage('Canceled.', dckActiveForm);
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Break;
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end;
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Inc(I);
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end;
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finally
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pbProgress.Position := 0;
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btnStart.Enabled := True;
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DSAQueueStore.Clear;
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end;
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end;
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end. |