Question

MFC关于Tree Control的使用

1、Tree Control中InsertItem中有的有3个参数，有的有5个参数，3个参数的第3个参数InsertedAfter有什么用，5个参数中有2个图标，有什么区别

2、使用GetSelectedItem获得HTREEITEM后使用DeleteItem为什么所有的项都被删除了？

3、Tree Control还有哪些常用函数，比如如何展开一项，收起一项，等等..
问题2和3呢

Answer 1

下个MSDN吧,有中文版的,英文版的.没有MSDN寸步难行啊..
以下是摘自MSDN
CTreeCtrl::InsertItem
HTREEITEM InsertItem( LPTVINSERTSTRUCT lpInsertStruct );

HTREEITEM InsertItem(UINT nMask, LPCTSTR lpszItem, int nImage, int nSelectedImage, UINT nState, UINT nStateMask, LPARAM lParam, HTREEITEM hParent, HTREEITEM hInsertAfter );

HTREEITEM InsertItem( LPCTSTR lpszItem, HTREEITEM hParent = TVI_ROOT, HTREEITEM hInsertAfter = TVI_LAST );

HTREEITEM InsertItem( LPCTSTR lpszItem, int nImage, int nSelectedImage, HTREEITEM hParent = TVI_ROOT, HTREEITEM hInsertAfter = TVI_LAST);

Return Value

Handle of the new item if successful; otherwise NULL.

Parameters

lpInsertStruct

A pointer to aTVINSERTSTRUCT that specifies the attributes of the tree view item to be inserted.

nMask

Integer specifying which attributes to set. See theTVITEM structure in the Platform SDK.

lpszItem

Address of a string containing the item’s text.

nImage

Index of the item’s image in the tree view control’s image list.

nSelectedImage

Index of the item’s selected image in the tree view control’s image list.

nState

Specifies values for the item’s states. SeeTree View Control Item States in the Platform SDK for a list of appropriate states.

nStateMask

Specifies which states are to be set. See theTVITEM structure in the Platform SDK.

lParam

A 32-bit application-specific value associated with the item.

hParent

Handle of the inserted item’s parent.

hInsertAfter

Handle of the item after which the new item is to be inserted.

Remarks

Call this function to insert a new item in a tree view control.