//
YTreeViewؼ
Alpha:         BKGʱ,Ĭֵ255(͸),0ʾȫ͸
BackColor:       
BigIconSize:   ͼߴ
CheckSize:     ѡߴ
clrCheckBoxFrame:   ѡı߿ɫ
clrFocus:      ɫ
clrFrame:      ؼı߿ɫ
clrUp:         Hoverı߿ɫ
clrHeaderFromDown: бͷϰǵĽʼɫ
clrHeaderFromNormal:бͷ״̬ʱĽʼɫ
DisMode:       Сͼʹͼģʽл
Font:          
ForeColor:     
HeaderHeight:  бͷĸ߶
IsChangeHeader:  ǷԵбͷС
IsDrawFocus:   Ƿ񻭻ý
IsDrawHover:   ǷHover
relItemTop:    ĸ߶й
relLeft:       ؼLeftƫ
relTop:        ؼTopƫ
relNodeLeft:   ڽˮƽƫ
relNodeTop:    ڽ¼
ScrollStyle:   ʽ
SmallIconSize: Сͼߴ
Style:         ͸ѡʽл
TotalStyle:    ؼ()

(עиͼйصķʧЧ,ؼͼҪԼ)
AddItem( ,ı,ʱͼ,չʱͼ )
        ע,һԪرΪ,ٶĸΪ-1  
FindItem( Ҫı )
IsChild( ֵ )      Ƿûһ
RemoveItem( ֵ )
SetItemCheck( ,״̬)   ĸѡ״̬
SetTreeText( ,ı )   ı
Spread( ,չ״̬ )    չ״̬

ֻ
hwnd:            
Selected:      Ƿѡ
TreeCnt:       ܹж,
TreeText:      ı

ֻд:
IconNormal:    δչ״̬ʱͼ(ȫֵ)
IconSpread:    չʱͼ(ȫֵ)

¼:
Click           
DBClick     
MouseDown
MouseMove
MouseUp  