MFC CPropertySheet crashes when WM_CREATE returns -1 and PostNcDestroy() will delete this-pointer by Marc_75

The MFC implementation of CPropertySheet relies on the 'this'-pointer to be available, even when the property sheet constructions fails!

When a property sheet cannot be constructed it is common practice to return -1 when handling the message WM_CREATE/OnCreate(). And it is also common practice to perform a 'delete this'-construction in PostNcDestroy to clean up the CWnd-derivative window object for a modeless window.

When this construction is used for a modeless CPropertySheet, the MFC will crash in the function:
BOOL CPropertySheet::Create(CWnd* pParentWnd, DWORD dwStyle, DWORD dwExStyle)
at the position:
this->DestroyWindow();

OK, meanwhile I'm using PostMessage(WM_CLOSE) in order to avoid opening the sheet. However, the property sheet still becomes visible for a second, as can be seen when a breakpoint is set in the function CPropertySheet::Create(CWnd* pParentWnd, DWORD dwStyle, DWORD dwExStyle
at the position:
// cleanup on failure, otherwise return TRUE
if (!AfxUnhookWindowCreate())
PostNcDestroy();    // cleanup if Create fails