Convert CWnd* to myControl*

Question

I am trying to convert a CWnd* pointer to a custom control pointer. The custom control just extends CEdit. Below is what I have. pWnd was passed in. it is a CWnd*.

calEdit* test = (calEdit*)pWnd->GetDlgItem(pWnd->GetDlgCtrlID());

When I try to debug and see what the value of test is, none of its members can be evaluated. The CWnd* is definitely not the problem.

To be sure that the CWnd* is pointing to the control I want, I did pWnd->GetDlgCtrlID(), and the ID matches the expected control.

It seems that you could simply go for `calEdit* test = (calEdit*)pWnd`, as what you are doing is getting the ID of pWnd, and then getting the CWnd pointer of this ID, that is pWnd. — ThreeStarProgrammer57, Jun 03 '15 at 00:07
Besides from the debugger unable to evaluate the members, does the code work ? — Jabberwocky, Jun 03 '15 at 04:38

score 0 · Accepted Answer · answered Jun 03 '15 at 00:01

0

try to use CEdit *pEdit = dynamic_cast<CEdit*>(pWnd)

answered Jun 03 '15 at 00:01

Sergi0

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score 0 · Answer 2 · answered Jun 10 '20 at 05:19

0

try to use :

CEdit *pEdit = reinterpret_cast<CEdit*>(pWnd);
if (pEdit != nullptr)
  // Do something here

answered Jun 10 '20 at 05:19

Penny

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Convert CWnd* to myControl*

2 Answers2