How to refresh the dialog in MFC

Question

5.00/5 (1 vote)

See more:

I have a dialog which is derived from CDialog (Modal ) .Now when I press window+D to minimize all the windows and again when I restore the dialog then all the control over it get disapper which only reappear when I move the dialog window.
Why it is happening so and how to fix this .

What I have tried:

I believe RedrawWindow window will do the trick but don't know where to implement this. Which event is going to get hit upon restoring the window through window+D click.

Posted 13-Jun-18 3:50am

iampradeepsharma

Updated 19-Jun-20 10:30am

Add a Solution

Comments

Mohibur Rashid 13-Jun-18 10:04am

Does this help?
https://msdn.microsoft.com/en-us/library/ms821579.aspx

iampradeepsharma 13-Jun-18 10:07am

no this api is not present in the MFC dialog.

Richard MacCutchan 13-Jun-18 10:29am

The dialog, like any Window, should repaint itself when it gets restored. You need to look into your code to try and see what may be missing.

3 solutions

Solution 4

Call

Invalidate(TRUE);
UpdateWindow();

That's the only method that worked for me as I was looking for a solution.

Posted 19-Jun-20 10:31am

Michael Haephrati

Solution 1

On restoring after minimise, OnSize[^] is called with nType set to SIZE_RESTORED.

Normally the window would redraw itself automatically though. If you're already using OnSize, check to make sure you're calling the base class' function.

Posted 13-Jun-18 6:20am

User 7429338

Comments

iampradeepsharma 14-Jun-18 4:15am

OnSize isn't even getting called . I just said it is happening upon pressing window+D as key for minimizing everything and then restoring it using the same key combination.

[no name] 14-Jun-18 4:18am

Is your application doing processing on the main thread?

iampradeepsharma 25-Jun-18 4:48am

what is the event which is called when you restore your window but not necessarily activating that window ?

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

iampradeepsharma · Accepted Answer · 2018-07-15T21:39:00

Solution 3

By intercepting the WM_NCPAINT and calling the RedrawWindow() along with the base class handler I could refresh the dialog .
Thanks all .

Posted 15-Jul-18 21:39pm

iampradeepsharma