Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Modeless Dialog in ActiveX DLL

Posted on 2001-07-18
3
Medium Priority
?
744 Views
Last Modified: 2010-04-06
This code in VB is an ActiveX DLL:

Project LibXX
Class ClaseX
Public Sub ShowDialog()
  'This line show the dialog in modeless
  frmFormulario.Show vbModeless
End Sub

called from VB work well ...


But in Delphi i :

  frm := CreateOleObject('LibXX.ClaseX') as ClaseX;
  frm.ShowDialog; <-error

I recive an error something like that:
"Can not show dialog modeless in ActiveX DLL"


How i can do this in delphi like vb?

The problem is explained in the MSDN:

Modeless Dialog Boxes Sometimes Aren't Allowed
When you create an ActiveX DLL, you'll have one limitation: Depending on the container, modeless dialog boxes may or may not be displayed. For example, imagine that you've created an ActiveX DLL that includes an ActiveX document that shows a modeless form. If you view the document in Office Binder, showing the modeless form will present no problems. On the other hand, if you view the same document in Internet Explorer, attempting to display the same modeless form will raise an error.
Note With Internet Explorer 4.0 or later, the ability to show modeless forms is dependent on the threading model. This is discussed in "Apartment-Model Threading in Visual Basic" in "Building Code Components."


(sorry for my english)

thanks
0
Comment
Question by:Felixls
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 13

Accepted Solution

by:
Epsylon earned 800 total points
ID: 6294821
The dialog needs input from somewhere. In Delphi it's Application.Handle. I don't know how to link that to a VB ActiveX DLL. This thread is about it. Maybe it gives you an idea of what I mean:

http://groups.google.com/groups?hl=en&safe=off&ic=1&th=b48f6d79d504b670,3&seekm=uSN%24FDT89GA.263%40ntdwwaaw.compuserve.com#p
0
 

Author Comment

by:Felixls
ID: 6296447
Epsilon:

Thank you for your comment, I have redefined my question.

Seemingly the Delphi EXEs are not shown as a prepared "HOST" to show forms Modeless
0
 

Author Comment

by:Felixls
ID: 6301996
Thanks.

Felix.
0

Featured Post

Important Lessons on Recovering from Petya

In their most recent webinar, Skyport Systems explores ways to isolate and protect critical databases to keep the core of your company safe from harm.

Question has a verified solution.

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

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
Have you created a query with information for a calendar? ... and then, abra-cadabra, the calendar is done?! I am going to show you how to make that happen. Visualize your data!  ... really see it To use the code to create a calendar from a q…
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…
Suggested Courses

636 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