Kill focus derived class cedit

Question

1.00/5 (1 vote)

See more:

I used a derived class for CEdit but I must use OnKillFocus in derived class of CEdit..how must I write?

What I have tried:

I searched examples on internet but I don't find

Posted 11-Jun-24 6:07am

Member 14594285

Add a Solution

Comments

0x01AA 11-Jun-24 13:26pm

And you really assume that we know this inherited class from CEdit and that we can help you?

Shao Voon Wong 12-Jun-24 4:16am

I have posted a tip to your question: https://www.codeproject.com/Tips/5383694/MFC-KillFocus-Derived-CEdit

Hope the solution works for you!

Shao Voon Wong 12-Jun-24 6:12am

I have fixed a bug with my tip where CDerivedEdit is inheriting from CWnd instead of CEdit. Please download the code again.

4 solutions

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)

merano99 · Answer 1 · 2024-06-11T13:30:00

To write a method that causes the derived input field (CEdit) to lose focus, you can perhaps use the SetFocus function to set the focus to another control or the main window. Specifically, you should use OnKillFocus method to set the focus to another window, e.g. the parent window of the input field or another control.

C++

class CMyEdit : public CEdit
{
protected:
    afx_msg void OnKillFocus(CWnd* pNewWnd);
    DECLARE_MESSAGE_MAP()
};

C++

BEGIN_MESSAGE_MAP(CMyEdit, CEdit)
    ON_WM_KILLFOCUS()
END_MESSAGE_MAP()

void CMyEdit::OnKillFocus(CWnd* pNewWnd)
{
    // Call the base class implementation
    __super::OnKillFocus(pNewWnd);

    // Set focus to the parent window
    CWnd* pParent = GetParent();
    if (pParent != nullptr) {
        pParent->SetFocus();
    }
}

0x01AA · Answer 2 · 2024-06-11T07:26:00

Solution 1

Not a solution, but an answer.
And you really assume that we know this inherited class from CEdit and that we can help you?

Posted 11-Jun-24 7:26am

0x01AA

Updated 11-Jun-24 7:27am

v2

Richard MacCutchan · Answer 3 · 2024-06-11T09:53:00

Solution 2

If you want to know how to use a control then go first to the documentation: CEdit Class | Microsoft Learn[^].

Posted 11-Jun-24 9:53am

Richard MacCutchan

Rick York · Answer 4 · 2024-06-11T15:57:00

I found some code in an article here[^] that shows how to do this. Here are the steps :

First - declare the method in the control's class declaration :

C++

afx_msg void OnKillFocus( CWnd* pNewWnd );

Second - add an entry for the message in the control's message map :

C++

ON_WM_KILLFOCUS()

Third - add the implementation of the override :

C++

void CColourPopup::OnKillFocus( CWnd* pNewWnd )
{
	__super::OnKillFocus( pNewWnd );
    ReleaseCapture();
}

This is the implementation for this particular control and may not necessary in your implementation. Especially if you do not explicitly capture the mouse.

Kill focus derived class cedit

4 solutions

Solution 3

Solution 1

Solution 2

Solution 4

Add your solution here

Preview 0