如何使用vsx创建带有命令的子菜单?

我已经创建了以下vsct文件xml。

<?xml version="1.0" encoding="utf-8"?>
<CommandTable xmlns="http://schemas.microsoft.com/VisualStudio/2005-10-18/CommandTable" xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <Extern href="stdidcmd.h"/>
    <Extern href="vsshlids.h"/>
    <Extern href="msobtnid.h"/>
    <Commands package="guidMyVSXCommandsPkg">
        <Menus>
            <Menu guid="guidMyVSXCommandsCmdSet" id="TopLevelMenu" priority="0x100" type="Menu">
                <Parent guid="guidSHLMainMenu" id="IDM_VS_CTXT_PROJNODE"/>
                <Strings>
                    <MenuText>Work???</MenuText>
                    <ButtonText>FigureMain</ButtonText>
                    <CommandName>TryMainMenu</CommandName>
                </Strings>
            </Menu>
        </Menus>
        <Groups>
            <Group guid="guidMyVSXCommandsCmdSet" id="TopLevelMenuGroup" priority="0x0600">
                <Parent guid="guidMyVSXCommandsCmdSet" id="TopLevelMenu"/>
            </Group>
        </Groups>
        <Buttons>
            <Button guid="guidMyVSXCommandsCmdSet" id="cmdidMyCommand" priority="0x0100" type="Button">
                <Parent guid="guidMyVSXCommandsCmdSet" id="TopLevelMenuGroup" />
                <Icon guid="guidImages" id="bmpPic1" />
                <Strings>
                    <CommandName>cmdidMyCommand</CommandName>
                    <ButtonText>DO SOMETHING REAL COOL!!!!!!!!</ButtonText>
                </Strings>
            </Button>
        </Buttons>
        <Bitmaps>
            <Bitmap guid="guidImages" href="Resources\Images_32bit.bmp" usedList="bmpPic1, bmpPic2, bmpPicSearch, bmpPicX, bmpPicArrows"/>
        </Bitmaps>
    </Commands>
    <Symbols>
        <!-- This is the package guid. -->
        <GuidSymbol name="guidMyVSXCommandsPkg" value="{70e6574c-ebed-4856-b78b-0927966cc800}" />

        <!-- This is the guid used to group the menu commands together -->
        <GuidSymbol name="guidMyVSXCommandsCmdSet" value="{301c910a-65eb-42c4-bf0f-bc5aaac737f1}">
            <IDSymbol name="TopLevelMenu" value="0x0100" />
            <IDSymbol name="TopLevelMenuGroup" value="0x0200" />
            <IDSymbol name="cmdidMyCommand" value="0x0300" />
        </GuidSymbol>
        <GuidSymbol name="guidImages" value="{1997bf57-349c-434a-ad64-32a3a65e35f3}" >
            <IDSymbol name="bmpPic1" value="1" />
            <IDSymbol name="bmpPic2" value="2" />
            <IDSymbol name="bmpPicSearch" value="3" />
            <IDSymbol name="bmpPicX" value="4" />
            <IDSymbol name="bmpPicArrows" value="5" />
        </GuidSymbol>
    </Symbols>

</CommandTable>

工作--&燃气轮机;做些真正酷的事!!!!!!!!