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How differentiate use 'mouse'  click the button or use 'enter'  press the button?

Posted on 2001-07-17
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Last Modified: 2010-04-06
hi,dear experts,now I need your kind help very much.The question is as follows:
   When I did a little program,the 'showmessage' box was used.You see,there exists a 'confirm' button on the showmessage box,now,I want to differentiate if the user click the confirm button with mouse or use 'enter' to press the button?What shall I do?
    Hope to hear from you soon.Thank you for your viewing.
     
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Question by:bingohua
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4 Comments
 
LVL 6

Expert Comment

by:MannSoft
ID: 6289198
I think you would probably have to create your own custom message box and use it in place of ShowMessage.  Then you would know if the mouse or keyboard was used to press the button by watching its OnKey* and OnMouse* events for that object.
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LVL 17

Accepted Solution

by:
geobul earned 150 total points
ID: 6289239
Hi,
One label and one button on a form. IsMouse boolean variable stores the last user action (mouse or keyboard)

Regards, Geo

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Label1: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure AppOnMessage(var Msg: TMsg; var Handled: Boolean);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  IsMouse : boolean = true;

implementation

{$R *.DFM}

procedure TForm1.AppOnMessage(var Msg: TMsg; var Handled: Boolean);
begin
  { if keyboard or left mouse btn is used }
  if Msg.Message = WM_LBUTTONUP then begin
    IsMouse := true;
  end else begin
    IsMouse := false;
  end;
  Handled := False;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  ShowMessage('hello');
  if IsMouse then
    Label1.Caption := 'Mouse'
  else
    Label1.Caption := 'Keyboard';
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Application.OnMessage := AppOnMessage;
end;

end.
0
 

Expert Comment

by:Yunoshev
ID: 6289294
Either write your own custom message box or use subclassing.....
0
 

Author Comment

by:bingohua
ID: 6289544
Thank you for your instant help.
Best regards.
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