Solved

run time error 401 -- cant show non-modal form while a modal form is display

Posted on 2001-07-24
5
1,367 Views
Last Modified: 2012-06-27
i got a run time error 401 -- cant show non-modal form while a modal form is display

the error fired when a msgbox loaded with deafult parameters and another form is activate and includes a timer control

this error occurs only in 1 computer  while another 5 computers works fine.

the environment is:
win-95
vb-6 SP3


0
Comment
Question by:adl
  • 3
5 Comments
 
LVL 27

Expert Comment

by:Ark
ID: 6311515
Can you provide code?

Cheers
0
 
LVL 4

Accepted Solution

by:
vindevogel earned 100 total points
ID: 6311562
You've got your form as a modal form (form.show vbModal)
In that form, you want to display another messagebox ...

That's not allowed by Windows.


You must either show your form not modal and then popup the messagebox.

But, I guess that you put it modal to ensure that the user clicks one of the buttons on the form ....
You'll have to check that off with a global variable (that is changed when the user clicks one of the buttons) and you can put your form "always on top" to simulate the modal effect.  There's enough code on this site on how to display a form always on top.
0
 

Author Comment

by:adl
ID: 6311861
thanks for the comments but
i dont have any modal forms

also on other computers tested i dont have this problem
0
 
LVL 4

Expert Comment

by:vindevogel
ID: 6312385
run time error 401 -- cant show non-modal form while a modal form is display

with no modal forms, this is a curious run time error.
0
 
LVL 4

Expert Comment

by:vindevogel
ID: 6441360
Why did you grade this C ?
I consider this a blame on my record !
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The debugging module of the VB 6 IDE can be accessed by way of the Debug menu item. That menu item can normally be found in the IDE's main menu line as shown in this picture.   There is also a companion Debug Toolbar that looks like the followin…
This article describes some techniques which will make your VBA or Visual Basic Classic code easier to understand and maintain, whether by you, your replacement, or another Experts-Exchange expert.
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…

832 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question