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06.14.2006 at 06:13AM PDT, ID: 21885962
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7.0

Alternate causes of "Can't show non-modal form when modal form is displayed..."

Asked by RobertEnglish in Visual Basic Programming

Tags: , , ,

I've written a project in Visual Basic 6.0 and on some clients, to a greater or lesser extent, they get the error "Can't show non-modal form when modal form is displayed" when no modal form is displayed/loaded.
- I've tried code to detect all forms loaded in the project when this occurs but none are returned, besides the MDI and non-modal child(s). eg I've used the Forms collection.
- This error never occurs on our development PCs

Q1. Has anyone come across this issue or heard of a relevant bug in VB?
Q2. If there is 2 or more instances of the same program open, could this cause the error?
Q3. If there is 2 or more instances of different VB programs open, could this cause the error?
Q4. We have instant messaging freeware installed ICQ, could this cause the error?
Q5. Could Outlook being open cause the error?

I have been struggling with this for many years without any joy?

P.S. Please do NOT paste in a MSDN description of  "Can't show non-modal form when modal form is displayed" Start Free Trial
 
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[+][-]06.14.2006 at 06:25AM PDT, ID: 16902361

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[+][-]06.14.2006 at 06:34AM PDT, ID: 16902450

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[+][-]06.14.2006 at 10:23AM PDT, ID: 16904702

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[+][-]06.14.2006 at 10:31AM PDT, ID: 16904758

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[+][-]06.14.2006 at 01:05PM PDT, ID: 16906212

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About this solution

Zone: Visual Basic Programming
Tags: form, show, modal, when
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Solution Provided By: g_johnson
Participating Experts: 3
Solution Grade: A
 
 
[+][-]06.14.2006 at 02:45PM PDT, ID: 16907189

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[+][-]08.10.2006 at 05:50PM PDT, ID: 17292881

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