Combo的自动查询技术

Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal
hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any)
As Long
Public Const CB_FINDSTRING = &H14C
Private Sub Combo1_Change()
Dim iStart As Integer
Dim sString As String
Static iLeftOff As Integer
iStart = 1
iStart = Combo1.SelStart
If iLeftOff <> 0 Then
Combo1.SelStart = iLeftOff
iStart = iLeftOff
End If
sString = CStr(Left(Combo1.Text, iStart))
Combo1.ListIndex = SendMessage(Combo1.hwnd,B_FINDSTRING, -1, ByVal CStr(
Left( ombo1.Text, iStart)))

If Combo1.ListIndex = -1 Then
iLeftOff = Len(sString)
combo1.Text = sString
End If
Combo1.SelStart = iStart
iLeftOff = 0
End Sub
静态变量 iLeftOff 指定了字符长度。

上一篇： 应用VB4.0实现工业控制的实时曲线和历史曲线
下一篇： Web动画图像分解在VB动画设计中的应用

文章整理：西部数码--专业提供域名注册、虚拟主机服务
http://www.west263.com
以上信息与文章正文是不可分割的一部分,如果您要转载本文章,请保留以上信息，谢谢!