Function WriteHeaderData

src/drivers/win/header_editor.cpp:939–1681

}

bool WriteHeaderData(HWND hwnd, iNES_HEADER* header)
{
	// Temporary buffers
	char buf[256];

	iNES_HEADER _header;
	memset(&_header, 0, sizeof(iNES_HEADER));

	// Check iNES 2.0
	bool ines20 = IsDlgButtonChecked(hwnd, IDC_RADIO_VERSION_INES20) == BST_CHECKED;
	// iNES 1.0 unofficial byte available
	bool unofficial = !ines20 && IsDlgButtonChecked(hwnd, IDC_CHECK_UNOFFICIAL) == BST_CHECKED;

	// iNES 2.0 signature
	if (ines20)
		_header.ROM_type2 |= 8;

	// Mapper
	int mapper;
	if (!GetComboBoxListItemData(hwnd, IDC_MAPPER_COMBO, &mapper, buf, header))
	{
		if (header) {
			MessageBox(hwnd, "The mapper# you have entered is invalid. Please enter a decimal number or select an item from the dropdown list.", "Error", MB_OK | MB_ICONERROR);
			SetFocus(GetDlgItem(hwnd, IDC_MAPPER_COMBO));
			SendDlgItemMessage(hwnd, IDC_MAPPER_COMBO, EM_SETSEL, 0, -1);
		}
		else
			SetDlgItemText(hwnd, IDC_HEX_HEADER_EDIT, "");
		return false;
	}

	if (mapper < 4096)
	{
		_header.ROM_type |= (mapper & 0xF) << 4;
		_header.ROM_type2 |= (mapper & 0xF0);
		if (mapper >= 256)
		{
			if (ines20)
				_header.ROM_type3 |= mapper >> 8;
			else
			{
				if (header) {
					sprintf(buf, "Mapper# should be less than %d in iNES %d.0 format.", 256, 1);
					MessageBox(hwnd, buf, "Error", MB_OK | MB_ICONERROR);
					SetFocus(GetDlgItem(hwnd, IDC_MAPPER_COMBO));
					SendDlgItemMessage(hwnd, IDC_MAPPER_COMBO, EM_SETSEL, 0, -1);
				}
				else
					SetDlgItemText(hwnd, IDC_HEX_HEADER_EDIT, "");

				return false;
			}
		}
	}
	else {
		if (header) {
			sprintf(buf, "Mapper# should be less than %d in iNES %d.0 format.", 4096, 2);
			MessageBox(hwnd, buf, "Error", MB_OK | MB_ICONERROR);