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<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov ecx,lParam</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
shr ecx,16</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvhit.pt.x,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvhit.pt.y,ecx</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_DragMove,eax,ecx</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_DragShowNolock,FALSE</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_HITTEST,NULL,addr tvhit</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.if eax!=NULL</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_SELECTITEM,TVGN_DROPHILITE,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.endif</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_DragShowNolock,TRUE</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.endif</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.elseif uMsg==WM_LBUTTONUP</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.if DragMode==TRUE</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_DragLeave,hwndTreeView</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_EndDrag</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_Destroy,hDragImageList</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_GETNEXTITEM,TVGN_DROPHILITE,0</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_SELECTITEM,TVGN_CARET,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_SELECTITEM,TVGN_DROPHILITE,0</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ReleaseCapture</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov DragMode,FALSE</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.endif</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.elseif uMsg==WM_NOTIFY</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov edi,lParam</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
assume edi:ptr NM_TREEVIEW</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.if [edi].hdr.code==TVN_BEGINDRAG</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_CREATEDRAGIMAGE,0,[edi].itemNew.hItem</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov hDragImageList,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_BeginDrag,hDragImageList,0,0,0</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_DragEnter,hwndTreeView,[edi].ptDrag.x,[edi].ptDrag.y</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SetCapture,hWnd</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov DragMode,TRUE</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.endif</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
assume edi:nothing</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.elseif uMsg==WM_DESTROY</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke PostQuitMessage,NULL</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.else</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke DefWindowProc,hWnd,uMsg,wParam,lParam</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
ret</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.endif</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
xor eax,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
ret</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>WndProc
endp</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>end
start</font></font></font></b>
<h3>
<b><font face="Arial,Helvetica"><font color="#00CC00"><font size=+0>Analysis:</font></font></font></b></h3>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Within
WM_CREATE handler, you create the tree view control</font></font></font>
<ul><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke CreateWindowEx,NULL,ADDR TreeViewClass,NULL,\</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
WS_CHILD+WS_VISIBLE+TVS_HASLINES+TVS_HASBUTTONS+TVS_LINESATROOT,0,\</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
0,200,400,hWnd,NULL,\</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
hInstance,NULL</font></font></font></b></ul>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Note the
styles. TVS_xxxx are the tree view specific styles.</font></font></font>
<ul><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_Create,16,16,ILC_COLOR16,2,10</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov hImageList,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke LoadBitmap,hInstance,IDB_TREE</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov hBitmap,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke ImageList_Add,hImageList,hBitmap,NULL</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke DeleteObject,hBitmap</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_SETIMAGELIST,0,hImageList</font></font></font></b></ul>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Next,
you create an empty image list with will accept images of 16x16 pixels
in size, 16-bit color and initially, it will contain 2 images but can be
expanded to 10 if need arises. We then load the bitmap from the resource
and add it to the image list just created. After that, we delete the handle
to the bitmap since it will not be used anymore. When the image list is
all set, we associate it with the tree view control by sending TVM_SETIMAGELIST
to the tree view control.</font></font></font>
<ul><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.hParent,NULL</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.hInsertAfter,TVI_ROOT</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.u.item.imask,TVIF_TEXT+TVIF_IMAGE+TVIF_SELECTEDIMAGE</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.u.item.pszText,offset Parent</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.u.item.iImage,0</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.u.item.iSelectedImage,1</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_INSERTITEM,0,addr tvinsert</font></font></font></b></ul>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>We insert
items into the tree view control, beginning from the root item. Since it
will be root item, hParent member is NULL and hInsertAfter is TVI_ROOT.
imask member specifies that pszText, iImage and iSelectedImage members
of the TV_ITEM structure is valid. We fill those three members with appropriate
value. pszText contains the label of the root item, iImage is the index
into the image in the image list that will be displayed to the left of
the unselected item, and iSelectedImage is the index into the image in
the image list that will be displayed when the item is selected. When all
appropriate members are filled in, we send TVM_INSERTITEM message to the
tree view control to add the root item to it.</font></font></font>
<ul><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov hParent,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.hParent,eax</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.hInsertAfter,TVI_LAST</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.u.item.pszText,offset Child1</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_INSERTITEM,0,addr tvinsert</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov tvinsert.u.item.pszText,offset Child2</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
invoke SendMessage,hwndTreeView,TVM_INSERTITEM,0,addr tvinsert</font></font></font></b></ul>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>After
the root item is added, we can attach the child items to it. hParent member
is now filled with the handle of the parent item. And we will use identical
images in the image list so we don't change iImage and iSelectedImage member.</font></font></font>
<ul><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.elseif uMsg==WM_NOTIFY</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
mov edi,lParam</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
assume edi:ptr NM_TREEVIEW</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>
.if [edi].hdr.code==TVN_BEGINDRAG</font></font></font></b>
<br><b><font face="Arial,Helvetica"><font color=⌨️ 快捷键说明
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