Is there a way to get the Handle or CWnd* of a control using the ID of the control

1
votes

If I have an MFC dialog with a button control on it, is there a way to get construct the HWND or CWND for that control using the button's ID (e.g IDC_BUTTON_YES)?

1
c++mfchwndcwnd
msdn.microsoft.com/en-us/library/windows/desktop/… – Hans Passant
msdn.microsoft.com/en-us/library/77d16yhw.aspx – Hans Passant
If you use GetDlgItem to get the CWnd pointer, do not store it for later use. There's no guarantee it will be valid later on as it may be a temporary pointer. – rrirower

1 Answers

4
votes

Yes, you can use the function GetDlgItem of the MFC dialog!

Here is an example for you:

CWnd*  myWnd = this->GetDlgItem(IDC_LIST1);

// as CListBox

CListBox* myListBox = (CListBox*)this->GetDlgItem(IDC_LIST1);