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列表视图控件

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现在让我们来总结想列表控件中插入项目/子项目的步骤:

定义一个LV_ITEM型的结构体变量。
给该变量赋给合适的值
如果要插入一个项目,就向列表视图控件发送LVM_INSERTITEM值。 如果要插入一个子项目,发送LVM_SETITEM。如果您不明白项目和子项目之间的关系的话,可能会有一些疑惑。子项目仅是项目的属性而已,也就是说您可以插入一个项目但是不能插入一个子项目。所以添加一个子项目十只能发送LVM_SETITEM消息而不能发送LVM_INSERTITEM消息。
列表视图控件的消息/通知
既然您知道了如何创建和往其中添加内容,下一步就是如何和它通讯。列表视图控件和它的父窗口之间的通讯是通过消息/通知来进行的。父窗口通过发送消息来控制列表视图控件,列表视图控件通过发送WM_NOTIFY消息来通知它的父窗口。这一点和其它的通用控件没有什么不同。

排序项目/子项目
您可以在调用CreateWindowEx函数时指定LVS_SORTASCENDING 或 LVS_SORTDESCENDING风格来指定缺省的排序方式。这两种风格仅仅排序项目的名称。如果想要排序项目的其它属性,您可以通过发送LVM_SORTITEMS消息来完成

LVM_SORTITEMS
wParam = lParamSort
lParam = pCompareFunction

lParamSort 用户定义的值,该值将传递给用来比较的函数。
pCompareFunction 用户定义的用来比较排序的函数的地址。该函数的原型如下:

CompareFunc proto lParam1:DWORD, lParam2:DWORD, lParamSort:DWORD

lParam1 和 lParam2 是 LV_ITEM型的结构体中的成员变量lParam的值。
lParamSort 是发送LVM_SORTITEMS消息时参数wParam中的值

当列表视图控件接收到LVM_SORTITEMS消息时,当需要比较项目时它会调用在lParam中指定的比较函数。比较函数将决定那一个项目排在前面。方法很简单:如果函数返回一个负值,由(lParam代表的)第一个项目排在前,如果返回正值,第二个项目排在前。如果相等,必须返回0 。

真正使得该方法能够运行的是LV_ITEM型结构体中的成员变量lParam值。当您需要排序时(譬如当您点击列的标题条时),您需要考虑好排序方案。在本例中,我们把项目的索引放到该成员变量中,这样我们可以通过发送LVM_GETITEM消息来得到项目的其它信息。注意:当项目重排序后,它们的索引也就变了。所以当重排序后,我需要在lParam参数中反应出新的索引。如果您想在用户点击列的标题条时重新排序,您需要在您的窗口过程函数中处理LVN_COLUMNCLICK通知消息。LVN_COLUMNCLICK消息是随同WM_NOTIFY消息一起发送的。

例子:
该例子创建了一个列表视图控件,并在其中显示了当前文件夹中的文件大小和文件名。缺省的视图是报告方式的,如果您点击列标题条,标题将按升/降序重新排列。您可以通过菜单选择不同的显示方式(大图标、小图标等)。当您双击一个项目时,项目的名称将显示在一个对话框中。

.386
.model flat,stdcall
option casemap:none
include /masm32/include/windows.inc
include /masm32/include/user32.inc
include /masm32/include/kernel32.inc
include /masm32/include/comctl32.inc
includelib /masm32/lib/comctl32.lib
includelib /masm32/lib/user32.lib
includelib /masm32/lib/kernel32.lib

WinMain proto :DWORD,:DWORD,:DWORD,:DWORD

IDM_MAINMENU equ 10000
IDM_ICON equ LVS_ICON
IDM_SMALLICON equ LVS_SMALLICON
IDM_LIST equ LVS_LIST
IDM_REPORT equ LVS_REPORT

RGB macro red,green,blue
xor eax,eax
mov ah,blue
shl eax,8
mov ah,green
mov al,red
endm

.data
ClassName db "ListViewWinClass",0
AppName db "Testing a ListView Control",0
ListViewClassName db "SysListView32",0
Heading1 db "Filename",0
Heading2 db "Size",0
FileNamePattern db "*.*",0
FileNameSortOrder dd 0
SizeSortOrder dd 0
template db "%lu",0

.data?
hInstance HINSTANCE ?
hList dd ?
hMenu dd ?

.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, NULL
mov wc.lpfnWndProc, OFFSET WndProc
mov wc.cbClsExtra,NULL
mov wc.cbWndExtra,NULL
push hInstance
pop wc.hInstance
mov wc.hbrBackground,COLOR_WINDOW+1
mov wc.lpszMenuName,IDM_MAINMENU
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,NULL,ADDR ClassName,ADDR AppName, WS_OVERLAPPEDWINDOW,CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInst,NULL
mov hwnd,eax
invoke ShowWindow, hwnd,SW_SHOWNORMAL
invoke UpdateWindow, hwnd
.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

InsertColumn proc
LOCAL lvc:LV_COLUMN

mov lvc.imask,LVCF_TEXT+LVCF_WIDTH
mov lvc.pszText,offset Heading1
mov lvc.lx,150
invoke SendMessage,hList, LVM_INSERTCOLUMN, 0, addr lvc
or lvc.imask,LVCF_FMT
mov lvc.fmt,LVCFMT_RIGHT
mov lvc.pszText,offset Heading2
mov lvc.lx,100
invoke SendMessage,hList, LVM_INSERTCOLUMN, 1 ,addr lvc
ret
InsertColumn endp

ShowFileInfo proc uses edi row:DWORD, lpFind:DWORD
LOCAL lvi:LV_ITEM
LOCAL buffer[20]:BYTE
mov edi,lpFind
assume edi:ptr WIN32_FIND_DATA
mov lvi.imask,LVIF_TEXT+LVIF_PARAM
push row
pop lvi.iItem
mov lvi.iSubItem,0
lea eax,[edi].cFileName
mov lvi.pszText,eax
push row
pop lvi.lParam
invoke SendMessage,hList, LVM_INSERTITEM,0, addr lvi
mov lvi.imask,LVIF_TEXT
inc lvi.iSubItem
invoke wsprintf,addr buffer, addr template,[edi].nFileSizeLow
lea eax,buffer
mov lvi.pszText,eax
invoke SendMessage,hList,LVM_SETITEM, 0,addr lvi
assume edi:nothing
ret
ShowFileInfo endp

FillFileInfo proc uses edi
LOCAL finddata:WIN32_FIND_DATA
LOCAL FHandle:DWORD

invoke FindFirstFile,addr FileNamePattern,addr finddata
.if eax!=INVALID_HANDLE_VALUE
mov FHandle,eax
xor edi,edi
.while eax!=0
test finddata.dwFileAttributes,FILE_ATTRIBUTE_DIRECTORY
.if ZERO?
invoke ShowFileInfo,edi, addr finddata
inc edi
.endif
invoke FindNextFile,FHandle,addr finddata
.endw
invoke FindClose,FHandle
.endif
ret
FillFileInfo endp

String2Dword proc uses ecx edi edx esi String:DWORD
LOCAL Result:DWORD

mov Result,0
mov edi,String
invoke lstrlen,String
.while eax!=0
xor edx,edx
mov dl,byte ptr [edi]
sub dl,"0"
mov esi,eax
dec esi
push eax
mov eax,edx
push ebx
mov ebx,10
.while esi > 0
mul ebx
dec esi
.endw
pop ebx
add Result,eax
pop eax
inc edi
dec eax
.endw
mov eax,Result
ret
String2Dword endp

CompareFunc proc uses edi lParam1:DWORD, lParam2:DWORD, SortType:DWORD
LOCAL buffer[256]:BYTE
LOCAL buffer1[256]:BYTE
LOCAL lvi:LV_ITEM

mov lvi.imask,LVIF_TEXT
lea eax,buffer
mov lvi.pszText,eax
mov lvi.cchTextMax,256
.if SortType==1
mov lvi.iSubItem,1
invoke SendMessage,hList,LVM_GETITEMTEXT,lParam1,addr lvi
invoke String2Dword,addr buffer
mov edi,eax
invoke SendMessage,hList,LVM_GETITEMTEXT,lParam2,addr lvi
invoke String2Dword,addr buffer
sub edi,eax
mov eax,edi
.elseif SortType==2
mov lvi.iSubItem,1
invoke SendMessage,hList,LVM_GETITEMTEXT,lParam1,addr lvi
invoke String2Dword,addr buffer
mov edi,eax
invoke SendMessage,hList,LVM_GETITEMTEXT,lParam2,addr lvi
invoke String2Dword,addr buffer
sub eax,edi
.elseif SortType==3
mov lvi.iSubItem,0
invoke SendMessage,hList,LVM_GETITEMTEXT,lParam1,addr lvi
invoke lstrcpy,addr buffer1,addr buffer
invoke SendMessage,hList,LVM_GETITEMTEXT,lParam2,addr lvi
invoke lstrcmpi,addr buffer1,addr buffer
.else
mov lvi.iSubItem,0
invoke SendMessage,hList,LVM_GETITEMTEXT,lParam1,addr lvi
invoke lstrcpy,addr buffer1,addr buffer
invoke SendMessage,hList,LVM_GETITEMTEXT,lParam2,addr lvi
invoke lstrcmpi,addr buffer,addr buffer1
.endif
ret
CompareFunc endp

UpdatelParam proc uses edi
LOCAL lvi:LV_ITEM

invoke SendMessage,hList, LVM_GETITEMCOUNT,0,0
mov edi,eax
mov lvi.imask,LVIF_PARAM
mov lvi.iSubItem,0
mov lvi.iItem,0
.while edi>0
push lvi.iItem
pop lvi.lParam
invoke SendMessage,hList, LVM_SETITEM,0,addr lvi
inc lvi.iItem
dec edi
.endw
ret
UpdatelParam endp

ShowCurrentFocus proc
LOCAL lvi:LV_ITEM
LOCAL buffer[256]:BYTE

invoke SendMessage,hList,LVM_GETNEXTITEM,-1, LVNI_FOCUSED
mov lvi.iItem,eax
mov lvi.iSubItem,0
mov lvi.imask,LVIF_TEXT
lea eax,buffer
mov lvi.pszText,eax
mov lvi.cchTextMax,256
invoke SendMessage,hList,LVM_GETITEM,0,addr lvi
invoke MessageBox,0, addr buffer,addr AppName,MB_OK
ret
ShowCurrentFocus endp

WndProc proc hWnd:HWND, uMsg:UINT, wParam:WPARAM, lParam:LPARAM
.if uMsg==WM_CREATE
invoke CreateWindowEx, NULL, addr ListViewClassName, NULL, LVS_REPORT+WS_CHILD+WS_VISIBLE, 0,0,0,0,hWnd, NULL, hInstance, NULL
mov hList, eax
invoke InsertColumn
invoke FillFileInfo
RGB 255,255,255
invoke SendMessage,hList,LVM_SETTEXTCOLOR,0,eax
RGB 0,0,0
invoke SendMessage,hList,LVM_SETBKCOLOR,0,eax
RGB 0,0,0
invoke SendMessage,hList,LVM_SETTEXTBKCOLOR,0,eax
invoke GetMenu,hWnd
mov hMenu,eax
invoke CheckMenuRadioItem,hMenu,IDM_ICON,IDM_LIST, IDM_REPORT,MF_CHECKED
.elseif uMsg==WM_COMMAND
.if lParam==0
invoke GetWindowLong,hList,GWL_STYLE
and eax,not LVS_TYPEMASK
mov edx,wParam
and edx,0FFFFh
push edx
or eax,edx
invoke SetWindowLong,hList,GWL_STYLE,eax
pop edx
invoke CheckMenuRadioItem,hMenu,IDM_ICON,IDM_LIST, edx,MF_CHECKED
.endif
.elseif uMsg==WM_NOTIFY
push edi
mov edi,lParam
assume edi:ptr NMHDR
mov eax,[edi].hwndFrom
.if eax==hList
.if [edi].code==LVN_COLUMNCLICK
assume edi:ptr NM_LISTVIEW
.if [edi].iSubItem==1
.if SizeSortOrder==0 || SizeSortOrder==2
invoke SendMessage,hList,LVM_SORTITEMS,1,addr CompareFunc
invoke UpdatelParam
mov SizeSortOrder,1
.else
invoke SendMessage,hList,LVM_SORTITEMS,2,addr CompareFunc
invoke UpdatelParam
mov SizeSortOrder,2
.endif
.else
.if FileNameSortOrder==0 || FileNameSortOrder==4
invoke SendMessage,hList,LVM_SORTITEMS,3,addr CompareFunc
invoke UpdatelParam
mov FileNameSortOrder,3
.else
invoke SendMessage,hList,LVM_SORTITEMS,4,addr CompareFunc
invoke UpdatelParam
mov FileNameSortOrder,4
.endif
.endif
assume edi:ptr NMHDR
.elseif [edi].code==NM_DBLCLK
invoke ShowCurrentFocus
.endif
.endif
pop edi
.elseif uMsg==WM_SIZE
mov eax,lParam
mov edx,eax
and eax,0ffffh
shr edx,16
invoke MoveWindow,hList, 0, 0, eax,edx,TRUE
.elseif uMsg==WM_DESTROY
invoke PostQuitMessage,NULL
.else
invoke DefWindowProc,hWnd,uMsg,wParam,lParam
ret
.endif
xor eax,eax
ret
WndProc endp
end start

 

 
 

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