Solved

DTPicker doesn't fire change event

Posted on 2001-07-02
15
1,355 Views
Last Modified: 2010-08-05
Hello Experts.

I'm developing with vb6 (SP3).
I have a DTPicker-Control included in MSCOMCT2.OCX (v.6.00.8418)

placed on a Form.

Code to reproduce behaviour:

Private Sub DTPicker1_Change()
    MsgBox "Date changed !"
End Sub


Private Sub Form_Load()
    DTPicker1.Value = "21.04.1997"
    DTPicker1.Value = "02.02.2000"
End Sub

... but no MsgBox appears !

 
0
Comment
Question by:VK
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15 Comments
 
LVL 43

Expert Comment

by:TimCottee
ID: 6244938
It would appear that this event is only fired when the control's value is changed by the control itself and not through code!
0
 
LVL 51

Expert Comment

by:Ryan Chong
ID: 6244953
Hi VK,

Try to modify the

Private Sub Form_Load()
   DTPicker1.Value = "21.04.1997"
   DTPicker1.Value = "02.02.2000"
End Sub

to

Private Sub Form_Load()
   DTPicker1.Value = "21/04/1997" 'Or "21-04-1997"
   DTPicker1.Value = "02/02/2000" 'Or "02-02-2000"
End Sub

And try again.

The sub

Private Sub DTPicker1_Change()
   MsgBox "Date changed !"
End Sub

is tested ok.
0
 
LVL 51

Expert Comment

by:Ryan Chong
ID: 6244976
Hi,

in your Form_load()

change

DTPicker1.Value = "21.04.1997"

to

DTPicker1.Value = CDate("21-04-1997")
0
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Expert Comment

by:Onkar
ID: 6245012
Hi,

When you assign vlue to DTPicker change event will not fire. Once you select a date from the DTPicker then it fires change event "DTPicker1_Change"

Onkar
0
 
LVL 6

Author Comment

by:VK
ID: 6245046
I know that the event fires when i change the value of the DTPicker from GUI, but i have to do it from code. Calling
Call DTpicker1_Change is not elegant.
0
 
LVL 6

Author Comment

by:VK
ID: 6245054
I know that the event fires when i change the value of the DTPicker from GUI, but i have to do it from code. Calling
Call DTpicker1_Change is not elegant.
0
 
LVL 6

Author Comment

by:VK
ID: 6245063
I know that the event fires when i change the value of the DTPicker from GUI, but i have to do it from code. Calling
Call DTpicker1_Change is not elegant.
0
 
LVL 6

Author Comment

by:VK
ID: 6245071
Thanks for so much reply, but

DTPicker1.Value = CDate("21-04-1997")

AND

DTPicker1.Value = "21/04/1997" 'Or "21-04-1997"
DTPicker1.Value = "02/02/2000" 'Or "02-02-2000"

doesn't work !

It's not a formatting problem i think !

0
 
LVL 3

Accepted Solution

by:
nigelrowe earned 50 total points
ID: 6245130
Event Change()
    Member of MSComCtl2.DTPicker
    Occurs when the user selects a new date or changes a date in the edit portion of the control.

(VB object browser)
0
 
LVL 6

Author Comment

by:VK
ID: 6245154
It's not the solution, but it is the best answer describing the reason why.

Ty
0
 
LVL 43

Expert Comment

by:TimCottee
ID: 6245164
VK, sometimes we have to take the inelegant solution when there is no alternative. In this case I think that there is no alternative as the only way I have found to get the change event to fire is by using the GUI control itself. Even the CCRP date time picker control which in some ways is a better control exhibits the same behaviour in respect of the change event when the value is set in code.

I guess you will just have to call the change event in code (or perhaps a nicer solution would be to move the code from the change event to a seperate sub/function and call this directly - and from the change event sub as well).
0
 
LVL 3

Expert Comment

by:nigelrowe
ID: 6245306
Yes, not much of a solution was it? Tim Coffee is right, you don't seem to have much of a choice here. Cheers and good luck.
0
 
LVL 28

Expert Comment

by:AzraSound
ID: 6245380
one lump of sugar or two Tim Coffee?
0
 
LVL 43

Expert Comment

by:TimCottee
ID: 6245434
Two please and a shot of Irish Whiskey as well thanks Azra!
0
 
LVL 6

Author Comment

by:VK
ID: 6247451
Ty TimCottee and AzraSound for the good resonance. Next time if i'm unsure whom to give the points Tim would get them :-).

Cu
0

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