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Simple question

Posted on 2004-09-14
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Last Modified: 2010-04-05
I have 3 MaskEdit (mask1, mask2, mask3)
mask1 represent quantity
mask2 value
mask3 = quantity * value
mask3 is read only true
i want when i write some values (numeric values) in mask1 or mask2 the mask3 to change automaticaly = mask1*mask2
i try to put a action on mask1 and mask2 on keypressed, or in on change but didn't work , make the change only after one number, when i add more numbers nothing happend
Thanks
Hope i was clear
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Question by:fradolcino
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Ferruccio Accalai earned 25 total points
ID: 12052858
use the KeyUp event....when it occurs the text is already changed
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by:Ferruccio Accalai
ID: 12052872
i mean

procedure TForm1.MaskEdit1KeyUp(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
maskedit3.Text := FloatToStr(StrToFloat(Maskedit1.Text)*StrToFloat(MaskEdit2.Text));
end;
F68 ;-)
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LVL 17

Expert Comment

by:Wim ten Brink
ID: 12055354
A MaskEdit has an OnChange event that changes when the value changes... But if you just want numeric values, consider using a SpinEdit instead. Or combine the MaskEdit with a TUpDown from the Win32 tab. Set the Associate property of the UpDown to the MaskEdit and it will do some interesting things too.
The combination MaskEdit/UpDown allows you to get the value from the UpDown component while using the MaskEdit.OnChange event to change the third MaskEdit.
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Expert Comment

by:Orionizer
ID: 12084005
A great set of edits that are much more powerful than the standard Delphi edits are ESB Consultants ESBPCS.  I can't recommend it enough!  The kit has specific edits for positive only, positive/negative integers, positive only, positive/negative floats, etc...

Check it out here:

http://www.esbconsult.com
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