Home/ Questions/Q 7895881
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-03T07:45:00+00:00

I am getting waring Warning: Window creation failed: GetLastError returns 0x00000579 when using below

  • 0

I am getting waring
“Warning: Window creation failed: GetLastError returns 0x00000579”
when using below code 

CWnd* m_pWndStatic = new CWnd;
m_pWndStatic->CreateEx(0, _T("STATIC"),
                      _T("Hi"), WS_CHILD | WS_VISIBLE | WS_POPUP,
                      CRect(0, 0, 20, 20), this, 1234);

It works fine if i call it without PopUp i.e. WS_POPUP. I am using VS2010.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team
    //
// MessageId: ERROR_INVALID_MENU_HANDLE
//
// MessageText:
//
// Invalid menu handle.
//
#define ERROR_INVALID_MENU_HANDLE        1401L

    Which puts you on the wrong track, the real problem is that you can’t create a child window that’s also a popup window. Only top level windows can be popups. The diagnostic is generated because for a popup window, it interprets the “1234” argument you pass as a menu handle instead of a child window ID.

    Remove the WS_POPUP style flag.

    • 0