CFileDialog subclassing

I seem to be having lots of problems with this, are there any examples around I can get things to work how I expect under VisualC++ 6, but under 2005, I either get ignored (dlg.DoModal() returns instantly with ID_CANCEL), or it crashes with an assertion failure.

Under 2005 I've tried two different ways so far (both using code in the overridden CFileDialog methods)

Creating a dialog resource and using SetTemplate in the dialog constructor. This reserves the space at the bottom of the dialog, but doesn't show any of the controls, so I just get a lot of blank space.

Secondly, not bothering with SetTemplate, and creating my own controls manually in OnInitDone. The controls appear and are usable, but I don't get any messages about them. I've tried writing OnWndMsg & WindowProc handlers just in case I wasn't asking for the correct message, but no messages seem to pass through these functions. With a window snooper, I can see my controls have the same parent window as the "OK" and "Cancel" buttons.

An example of my second method is as follows:

class CMyFileDialog : public CFileDialog
{
DECLARE_DYNAMIC(CMyFileDialog)
[...]

CMyFileDialog::CMyFileDialog(BOOL bOpenFileDialog, LPCTSTR lpszDefExt,
LPCTSTR lpszFileName, DWORD dwFlags, LPCTSTR lpszFilter, CWnd* pParentWnd) :
CFileDialog(bOpenFileDialog, lpszDefExt, lpszFileName,
dwFlags, lpszFilter, pParentWnd)
{

}

void CMyFileDialog::OnInitDone()
{
CWnd *fswin = GetParent();

CButton *bb = new CButton();

bb->Create("KK", WS_CHILD|WS_VISIBLE, CRect(0,0,24,24), fswin, 3345);

CFileDialog::OnInitDone();
}

Any clues as to why the button appears, is clickable, but doesn't generate any messages

Visual C++11

essentially always keep pointer dynamic allocation

m_pBB

tried passing in second parameter Create() this

Kuphryn

I'm not using managed C++, so the pointer is dynamic allocation (there's no GC). It's only in that place for testing, and would of course be part of the class for the real thing. I've moved it into the class anyway just in case, but it makes no difference.

If I pass 'this' instead of 'this->GetParent()', then the button doesn't even show up at all.

button coordinates

MoveWindow()

Kuphryn

I specify a CRect of 0,0,24,24 - doesn't that mean the top left corner Also, If I use the parents cwnd, it does show up, so I don't think it's that.

increase height dialog

Kuphryn

doesn't help

no see button or no receive message

Kuphryn

using 'this' as owner of window argument, I don't see button.

using 'this->GetParent()' as owner of window argument, I see button, but not receive any messages.

visible after increase height dialog

Kuphryn

No, not visible even after increase height dialog

This post is off-topic. You would be addressing a better group by addresssing your question here: http://msdn.microsoft.com/newsgroups/default.aspx dg=microsoft.public.win32.programmer.ui&lang=en&cr=US

What happensif you don't use GetParent to create the button

Why don't you use the standard way to extend your CFileDialog with a template