We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you two Citrix podcasts. Learn about 2020 trends and get answers to your biggest Citrix questions!Listen Now

x

Weird CComboBox OnDropDown problem

roelf
roelf asked
on
Medium Priority
377 Views
Last Modified: 2013-11-20
null
Comment
Watch Question

Commented:
I think your problem is that you tring to bring up MessageBox in CBN_DROPDOWN message handler when MFC is trying to do some painting to fill in listbox of combobox and message box  also trying to do some painting. Possible solution is to use PostMessage to call another function to bring up message box.

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts

Author

Commented:
I have tried using PostMessage() in the OnDropdownCombo1() function
to call another function to display the messagebox.  The messagebox
comes up allright, but then the list part of the combobox closes,
so no item can be selected.

Commented:
IF you want to have open listbox part ob combobox after message box is closed then as soon as user press "OK" on your message box, send CBN_DROPDOWN message to combobox class to reopen list box and not to display message box this time.

Author

Commented:
I can do that, but it seems to be such a schlep to keep track of
is this the first ONDROPDOWN or the second one, etc...

Thanks anyway - at least I can get it working now.
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.