树型视图控件详解

核心提示：includelib \masm32\lib\gdi32.lib includelib \masm32\lib\comctl32.lib includelib \masm32\lib\user32.lib includelib \masm32\lib\kernel32.lib WinMain PROTO :DWORD,

includelib \masm32\lib\gdi32.lib
includelib \masm32\lib\comctl32.lib
includelib \masm32\lib\user32.lib
includelib \masm32\lib\kernel32.lib
WinMain PROTO :DWORD,:DWORD,:DWORD,:DWORD
.const
IDB_TREE equ 4006 ; ID of the bitmap resource
.data
ClassName db "TreeViewWinClass",0
AppName db "Tree View Demo",0
TreeViewClass db "SysTreeView32",0
Parent db "Parent Item",0
Child1 db "child1",0
Child2 db "child2",0
DragMode dd FALSE ; a flag to determine if we are in drag mode

.data?
hInstance HINSTANCE ?
hwndTreeView dd ? ; handle of the tree view control
hParent dd ? ; handle of the root tree view item
hImageList dd ? ; handle of the image list used in the tree view control
hDragImageList dd ? ; handle of the image list used to store the drag image

.code
start:
invoke GetModuleHandle, NULL
mov hInstance,eax
invoke WinMain, hInstance,NULL,NULL, SW_SHOWDEFAULT
invoke ExitProcess,eax
invoke InitCommonControls

WinMain proc hInst:HINSTANCE,hPrevInst:HINSTANCE,CmdLine:LPSTR,CmdShow:DWORD
LOCAL wc:WNDCLASSEX
LOCAL msg:MSG
LOCAL hwnd:HWND
mov wc.cbSize,SIZEOF WNDCLASSEX
mov wc.style, CS_HREDRAW or CS_VREDRAW
mov wc.lpfnWndProc, OFFSET WndProc
mov wc.cbClsExtra,NULL
mov wc.cbWndExtra,NULL
push hInst
pop wc.hInstance
mov wc.hbrBackground,COLOR_APPWORKSPACE
mov wc.lpszMenuName,NULL
mov wc.lpszClassName,OFFSET ClassName
invoke LoadIcon,NULL,IDI_APPLICATION
mov wc.hIcon,eax
mov wc.hIconSm,eax
invoke LoadCursor,NULL,IDC_ARROW
mov wc.hCursor,eax
invoke RegisterClassEx, addr wc
invoke CreateWindowEx,WS_EX_CLIENTEDGE,ADDR ClassName,ADDR AppName,\ WS_OVERLAPPED+WS_CAPTION+WS_SYSMENU+WS_MINIMIZEBOX+WS_MAXIMIZEBOX+WS_VISIBLE,CW_USEDEFAULT,\
CW_USEDEFAULT,200,400,NULL,NULL,\
hInst,NULL
mov hwnd,eax
.while TRUE
invoke GetMessage, ADDR msg,NULL,0,0
.BREAK .IF (!eax)
invoke TranslateMessage, ADDR msg
invoke DispatchMessage, ADDR msg
.endw
mov eax,msg.wParam
ret
WinMain endp

WndProc proc uses edi hWnd:HWND, uMsg:UINT, wParam:WPARAM, lParam:LPARAM
LOCAL tvinsert:TV_INSERTSTRUCT
LOCAL hBitmap:DWORD
LOCAL tvhit:TV_HITTESTINFO
.if uMsg==WM_CREATE
invoke CreateWindowEx,NULL,ADDR TreeViewClass,NULL,\
WS_CHILD+WS_VISIBLE+TVS_HASLINES+TVS_HASBUTTONS+TVS_LINESATROOT,0,\
0,200,400,hWnd,NULL,\
hInstance,NULL ; Create the tree view control
mov hwndTreeView,eax
invoke ImageList_Create,16,16,ILC_COLOR16,2,10 ; create the associated image list
mov hImageList,eax
invoke LoadBitmap,hInstance,IDB_TREE ; load the bitmap from the resource
mov hBitmap,eax
invoke ImageList_Add,hImageList,hBitmap,NULL ; Add the bitmap into the image list
invoke DeleteObject,hBitmap ; always delete the bitmap resource
invoke SendMessage,hwndTreeView,TVM_SETIMAGELIST,0,hImageList
mov tvinsert.hParent,NULL
mov tvinsert.hInsertAfter,TVI_ROOT
mov tvinsert.item.imask,TVIF_TEXT+TVIF_IMAGE+TVIF_SELECTEDIMAGE
mov tvinsert.item.pszText,offset Parent
mov tvinsert.item.iImage,0
mov tvinsert.item.iSelectedImage,1
invoke SendMessage,hwndTreeView,TVM_INSERTITEM,0,addr tvinsert
mov hParent,eax
mov tvinsert.hParent,eax
mov tvinsert.hInsertAfter,TVI_LAST
mov tvinsert.item.pszText,offset Child1
invoke SendMessage,hwndTreeView,TVM_INSERTITEM,0,addr tvinsert
mov tvinsert.item.pszText,offset Child2
invoke SendMessage,hwndTreeView,TVM_INSERTITEM,0,addr tvinsert
.elseif uMsg==WM_MOUSEMOVE
.if DragMode==TRUE
mov eax,lParam
and eax,0ffffh
mov ecx,lParam
shr ecx,16
mov tvhit.pt.x,eax
mov tvhit.pt.y,ecx
invoke ImageList_DragMove,eax,ecx
invoke ImageList_DragShowNolock,FALSE
invoke SendMessage,hwndTreeView,TVM_HITTEST,NULL,addr tvhit
.if eax!=NULL
invoke SendMessage,hwndTreeView,TVM_SELECTITEM,TVGN_DROPHILITE,eax
.endif
invoke ImageList_DragShowNolock,TRUE
.endif
.elseif uMsg==WM_LBUTTONUP
.if DragMode==TRUE
invoke ImageList_DragLeave,hwndTreeView
invoke ImageList_EndDrag
invoke ImageList_Destroy,hDragImageList
invoke SendMessage,hwndTreeView,TVM_GETNEXTITEM,TVGN_DROPHILITE,0
invoke SendMessage,hwndTreeView,TVM_SELECTITEM,TVGN_CARET,eax
invoke SendMessage,hwndTreeView,TVM_SELECTITEM,TVGN_DROPHILITE,0
invoke ReleaseCapture
mov DragMode,FALSE
.endif
.elseif uMsg==WM_NOTIFY
mov edi,lParam
assume edi:ptr NM_TREEVIEW
.if [edi].hdr.code==TVN_BEGINDRAG
invoke SendMessage,hwndTreeView,TVM_CREATEDRAGIMAGE,0,[edi].itemNew.hItem
mov hDragImageList,eax
invoke ImageList_BeginDrag,hDragImageList,0,0,0
invoke ImageList_DragEnter,hwndTreeView,[edi].ptDrag.x,[edi].ptDrag.y