Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Setting acceptable file drops to an application

Posted on 1997-10-28
6
Medium Priority
?
225 Views
Last Modified: 2013-11-20
I want to set my application to accept only files having a particular extension by drag and drop. I have to use CWnd's 'DragAcceptFiles'in the InitInstance. Prior to calling this function, I have to set this filter that my application would reject files of any other extension, except the one I specified. I want this functionality to be in the application class, and not to be handled by various views. how to go about doing this?
Thanks.
0
Comment
Question by:pcasxd0
[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
  • 3
  • 3
6 Comments
 
LVL 15

Accepted Solution

by:
Tommy Hui earned 200 total points
ID: 1308988
By calling DragAcceptFiles(), you are telling Windows that the window is a drop target. It does not tell Windows which files are acceptable and which aren't. In fact, there isn't an easy way to do this. If the UI feedback isn't important, you can skip over the files you don't want.
0
 

Author Comment

by:pcasxd0
ID: 1308989
How can I 'skip'over the files I don't want?
0
 
LVL 15

Expert Comment

by:Tommy Hui
ID: 1308990
When you are processing the WM_DROPFILES message, it is up to you to go through all the files by using DragQueryFile and DragFinish(). The DragQueryFile returns the filename. If the filename is not what you want, then don't do anything with it.
0
Survive A High-Traffic Event with Percona

Your application or website rely on your database to deliver information about products and services to your customers. You can’t afford to have your database lose performance, lose availability or become unresponsive – even for just a few minutes.

 

Author Comment

by:pcasxd0
ID: 1308991
One last doubt... can the application class handle the WM-DROPFILES command, or do I have to write an independent function like it? (I want to handle this in the app class, rather than the view classes)
Thanks..
0
 
LVL 15

Expert Comment

by:Tommy Hui
ID: 1308992
I don't think the application class can handle it. Although you can simulate that by having the view class call a member function in the application.
0
 

Author Comment

by:pcasxd0
ID: 1308993
Thank you for the convincing answer. I'll do that.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Introduction: Ownerdraw of the grid button.  A singleton class implentation and usage. Continuing from the fifth article about sudoku.   Open the project in visual studio. Go to the class view – CGridButton should be visible as a class.  R…
Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…

715 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