MFC, Displaying message/dialog box before EnableShellOpen call

Displaying message/dialog box before EnableShellOpen call

Author	Message
kzseattl #1 / 4	Displaying message/dialog box before EnableShellOpen call I have an MDI application. If I display a message box or dialog box before EnableShellOpen call in InitInstance and double-click on a file associated with my application, the application does come up as well as the message box. However, an error message also comes up complaining that my file (on which I double-clicked) was not found. That message is followed by another message that the object referred to by that file has been removed or is inaccessible. The file I double-clicked is not opened. These errors messages DO NOT come up if I display message box or dialog box AFTER EnableShellOpen call. Does this mean one cannot display a message box or dialog box before calling EnableShellOpen? Do I need to make certain changes in registry so that I may display message boxes before calling EnableShellOpen?
Wed, 16 Nov 2005 03:05:11 GMT

David Lownde #2 / 4	Displaying message/dialog box before EnableShellOpen call Quote: >These errors messages DO NOT come up if I display message >box or dialog box AFTER EnableShellOpen call. Does this >mean one cannot display a message box or dialog box before >calling EnableShellOpen? The obvious answer is yes - if it hurts, don't do it! Quote: >Do I need to make certain changes in registry so that I >may display message boxes before calling EnableShellOpen? Why not just change your code to do those operations after calling EnableShellOpen. It's usually preferable to go with the flow rather than fight it. Dave -- MVP VC++ FAQ: http://www.mvps.org/vcfaq
Wed, 16 Nov 2005 09:33:43 GMT

kzseattl #3 / 4	Displaying message/dialog box before EnableShellOpen call I agree. However, I havnt seen anything in MFC documentation that you cant display message boxes, or any window for that matter, before calling EnableShellOpen. So, I was not sure if there was something that I was doing wrong or it's something that one cant do at all. It appears from your response that one should generally avoid displaying message boxes before calling EnableShellOpen. Quote: >-----Original Message----- >>These errors messages DO NOT come up if I display message >>box or dialog box AFTER EnableShellOpen call. Does this >>mean one cannot display a message box or dialog box before >>calling EnableShellOpen? >The obvious answer is yes - if it hurts, don't do it! >>Do I need to make certain changes in registry so that I >>may display message boxes before calling EnableShellOpen? >Why not just change your code to do those operations after calling >EnableShellOpen. It's usually preferable to go with the flow rather >than fight it. >Dave >-- >MVP VC++ FAQ: http://www.mvps.org/vcfaq >.
Wed, 16 Nov 2005 22:50:28 GMT

David Lownde #4 / 4	Displaying message/dialog box before EnableShellOpen call Quote: >I agree. However, I havnt seen anything in MFC >documentation that you cant display message boxes, or any >window for that matter, before calling EnableShellOpen. I'm not aware of anything specifically saying that either. Quote: >It appears from your response that one should generally >avoid displaying message boxes before calling >EnableShellOpen. My response was just a suggestion that it's better to avoid the problem rather than fight it. It's not a situation I've hit myself, so I don't know precisely what's happening. Dave -- MVP VC++ FAQ: http://www.mvps.org/vcfaq
Thu, 17 Nov 2005 00:24:42 GMT

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