楼主是不是不知道给树形控件发什么消息啊
TVM_SETITEMSee Also
TreeView_SetItem | TV_ITEM
Requirements
OS Versions: Windows CE 1.0 and later.
Header: Commctrl.h.
This message sets some or all of the attributes of a tree view item. You can send this message explicitly or by using the TreeView_SetItem macro.
TVM_SETITEM wParam = 0;
lParam = (LPARAM)(const TV_ITEM FAR*) pitem;
Parameters
pitem
Pointer to a TVITEM structure that contains the new item attributes. The hItem member identifies the item, and the mask member specifies which attributes to set.
If mask specifies the TVIF_TEXT value, the pszText member is the address of a null-terminated string and the cchTextMax member is ignored.
If mask specifies the TVIF_STATE value, the stateMask member indicates which item states to change and the state member contains the values for those states.
Return Values
TRUE indicates success. FALSE indicates success.