为什么添加的子菜单没有添加成功？

[cuixiutao]

HMENU hmenu=GetMenu(hWnd);
AppendMenu(hmenu,MF_STRING,20001,"空间分析");
HMENU hsubmemu=GetSubMenu(hmenu,GetMenuItemCount(hmenu)-1);
AppendMenu(hsubmemu,MF_STRING,20002,"最短距离");
AppendMenu(hsubmemu,MF_STRING,20003,"最佳设施");
AppendMenu(hsubmemu,MF_STRING,20004,"最优路径");
为什么？空间分析是加成功了！

[LegerWu]

以下语句有问题:

HMENU hsubmemu=GetSubMenu(hmenu,GetMenuItemCount(hmenu)-1);

[yu_hl]

HMENU hNew = CreateMenu();
AppendMenu(hmenu,MF_POPUP,(UINT_PTR)hNew,"空间分析");
AppendMenu(hNew ,MF_STRING,20002,"最短距离");
AppendMenu(hNew ,MF_STRING,20003,"最佳设施");
AppendMenu(hNew ,MF_STRING,20004,"最优路径");

[yu_hl]

HMENU hNew = CreateMenu();
AppendMenu(hmenu,MF_POPUP,(UINT_PTR)hNew,"空间分析");
AppendMenu(hNew ,MF_STRING,20002,"最短距离");
AppendMenu(hNew ,MF_STRING,20003,"最佳设施");
AppendMenu(hNew ,MF_STRING,20004,"最优路径");
DrawMenuBar();

[jishiping]

修正 yu_hl 的代码：
HMENU hmenu= GetMenu(hWnd);
HMENU hNew = CreatePopupMenu();
AppendMenu(hmenu,MF_POPUP,(UINT)hNew,"空间分析");
AppendMenu(hNew ,MF_STRING,20002,"最短距离");
AppendMenu(hNew ,MF_STRING,20003,"最佳设施");
AppendMenu(hNew ,MF_STRING,20004,"最优路径");
DrawMenuBar(hWnd);

[柯嘉]

TO:jishiping(JSP 季世平)
HIGH HAND, HIGH HAND AH!!
THANK YOU, THANK YOU!!!!!!!!!!