Does CreateDialogParam require an owner dialog?

[T]

I want to create a dialog (property page template) that has no parent window. Is this not possible with CreateDialog? I get an error indicating "Cannot create a top-level child window." (ERROR_TLW_WITH_WSCHILD = 1406)

Is it specified in the property somewhere that the window I create is a child window? If some, where can I change it?

HWND window = ::CreateDialogParam(::GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_PROPPAGE_SMALL), NULL, NULL, 0);

[Uwe Kotyczka]

On 24 Mai, 22:03, T <mstin...@gmail.com> wrote:
> HWND window = ::CreateDialogParam(::GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_PROPPAGE_SMALL), NULL, NULL, 0);

The fourth parameter (DLGPROC lpDialogFunc) must not be NULL.
Provide a pointer to your own dialog box procedure

BOOL CALLBACK YourDialogProc(
HWND hwndDlg, // handle to dialog box
UINT uMsg, // message
WPARAM wParam, // first message parameter
LPARAM lParam // second message parameter
);

instead. HTH