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mfcmessage

How to know when CWnd's Create function was called?

I've wrote a class wrapping a grid controls. I want to init the custom grid class when it is created by calling Create function.

Is there a way that i can catch the event?

Solution

  • Yes, if CWnd:Create or Cwd:CreateEx is used, it is possible to catch the Win32 event with:

    afx_msg int OnCreate(
   LPCREATESTRUCT lpCreateStruct 
);

    See CWnd::OnCreate

    With the corresponding mapping:

    BEGIN_MESSAGE_MAP(MyGrid, CWnd)
ON_WM_CREATE()
END_MESSAGE_MAP()

    Attention: If your control is directly added on a dialog template by the designer (ie, using DDX), the function CWnd:.OnCreate() is not called.

    In all cases, the following function is called at creation, after the Hwnd (handle of window) is initialized:

    virtual void PreSubclassWindow( );

    See PreSubclassWindow

    Best regards, Alain