WinForm 中实现象 QQ 那样可展开伸缩的菜单(Outlook)。解决了愿全部400分送上!AAAAAAA
aaa
bbb
BBBBBBB
CCCCCCC
DDDDDDD 点BBBB后 AAA的子菜单缩进去,BBBB的子菜单展开,明白?
AAAAAAA
BBBBBBB
aaa
bbb
CCCCCCC
DDDDDDD 点CCCCCCAAAAAAA
BBBBBBB
CCCCCCC
aaa
bbb
DDDDDDD
aaa
bbb
BBBBBBB
CCCCCCC
DDDDDDD 点BBBB后 AAA的子菜单缩进去,BBBB的子菜单展开,明白?
AAAAAAA
BBBBBBB
aaa
bbb
CCCCCCC
DDDDDDD 点CCCCCCAAAAAAA
BBBBBBB
CCCCCCC
aaa
bbb
DDDDDDD
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