获得VB listbox 选中项目(多项)的一个好方法
传统方法是遍历一遍
如果listbox 项目过多
明显速度不行
好方法是通过sendmessge发消息给listbox让他把选中项目直接传到参数数组中
You can use the SendMessage() API function instead.
As
you probably know, this function lets you send a message to one or more
windows. The declaration statement conforms to the following syntax:
Private Declare Function SendMessage Lib "user32" _
Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg _
As Long, ByVal wParam As Long, lParam As Any) As Long
Since
we want to gather the listbox: selected items, we'll send the
LB_GETSELITEMS constant in the wMsg argument, which you declare like so:
Private Const LB_GETSELITEMS = &H191
The LB_GETSELITEMS message fills an array with the index numbers of all the selected items.
Dim ItemIndexes() As Long, x As Integer, iNumItems As Integer
iNumItems = ThisBox.SelCount
If iNumItems Then
ReDim ItemIndexes(iNumItems - 1)
SendMessage ListBox1.hwnd, LB_GETSELITEMS, iNumItems, ItemIndexes(0)
End If
For x = 0 To iNumItems - 1
MsgBox ListBox1.List(ItemIndexes(x)) '弹出对话框
Next x
After
being passed to the SendMessage function, iNumItems holds the total
number of selected items, and the ItemIndexes array holds the selected
item index values. Notice, that you must pass a pointer to the
ItemIndexes array, and not the array itself. Thus, we passed
ItemIndexes(0) into the SendMessage function, not ItemIndexes().
相关文档：
http://www.webuc.net/ddf3/archive/2005/08/25/6142.aspx
不用FSO的复制文件夹得方法？
用API函数 SHFileOperation
以下是使用SHFileOperation删除复制移动文件的例子，可以复制文件夹
Private Type SHFILEOPSTRUCT
hwnd As Long
wFunc As Long
pfrom As String
pTo As String
fFlags As ......
Private Sub Cmd_OK_Click()
Dim ExcelAppX As Excel.Application
Dim ExcelBookX As Excel.Workbook
Dim ExcelSheetX As Excel.Worksheet
Dim a(1 To 3) As Single
Dim strFormat As Variant
......
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'判断闰年=======================
Private Function CheckLeap(ByVal year As Integer) As Boolean
If (year Mod 4 = 0) AndAlso (year Mod 100 <> ......
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当IIS被请求执行一个ASP程序,它首先会在ASP文件中找到<%%>标签之间的代码,并且执行它(也可以是<scri ptrunat=server></script....>之间的代码).如果这个ASP程序在先前被调用过,那么它就会用内存中的编译过的程序来向用户返回HTML代码,如果没有,那么它就重新编译.� ......
