Really activate window on Win98

I inserted all known commands for activating dialog box, but it appears greyed (non-activated) on Win98 - user still must click the mouse to reach window. Therefore on W2K dialog behaves OK.

Code:

<Resource script:>
DIALOG DISCARDABLE  STYLE DS_MODALFRAME | DS_SETFOREGROUND | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
...
<WINAPI WinMain:>
DialogBox( GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_START), NULL, StartProc);
...
BOOL CALLBACK StartProc(HWND hstart, UINT Message, WPARAM wParam, LPARAM lParam)
{
	switch(Message)
	{
	case WM_INITDIALOG:
		SetWindowPos((struct HWND__ *)hstart, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
		SetActiveWindow(hstart);
		SetForegroundWindow(hstart);
	break;
...

Is this problem related with my actions before DialogBox? But I really have no owner window - need to start with DialogBox. Anyone uses this technique?

Have you tried to use just setactivewindow? Try combinations of either one, both, or both in diff orders...I'm at school and can't compile anything to check, but as far as I know that code is correct.

To Waldo2k2: thnkx, you helped.
Yes, it's not necessary to use so many functions.

Another back issue on Win98SE: desktop / background window after closing dialog remains not refreshed. What I should add to my ending code?

Code:

switch(Message)
{
	case WM_COMMAND:
		switch(LOWORD(wParam))
		{
			case IDCANCEL:
				EndDialog(hinfo, IDCANCEL);
			break;
		}
	break;
	return TRUE;
	default:
		return FALSE;
}
return TRUE;