Question

Yes, I know, one should not mix different platforms, but I am working on a Qt application and now we have a new requirement: a standard Windows Open File Dialog should be used in place of a QFileDialog.

So I would like to create a CFileDialog that is a child of a QWidget. I have found a question related to the inverse problem: QWidget as a child of an existing MFC component but nothing about my specific issue.

My plan is to write a wrapper class

class FileStdWDialog : CFileDialog

with a constructor

FileDirStdWDialog(QWidget *parent, ...);

and map this to a call to the superclass constructor

CFileDialog(..., ..., ..., ..., ..., CWnd* pParentWnd, ...)

So, if I understand correctly, my problem boils down to mapping
a QWidget * to a CWnd *. Do you know if there is an easy way to do this?

Update

Thanks for the hints. Probably, getting the HWND for a QWidget and
converting this to CWnd * is the right solution. I will try this way.

Answer 1

You could call ::GetOpenFileName and ::GetSaveFileName. Those are the Win32 functions that CFileDialog wraps, I think. So you wouldn’t need MFC.

By the way, starting with Windows Vista, it is recommended to use the Common Item Dialog, rather than the standard Open and Save dialogs.