35.txt

介绍VB里的各种控件的使用方法,窗口控制,图像编程以及OCX等内容,还提供了一个API集供参考.

改变 ListIndex而不发生 Click 事件 
在修改 Combo 或 Listview 的ListIndex 时， 会发生 Click 事件， 下面的
函数可以阻止该事件。
声明：
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
Const CB_GETCURSEL = &H147
Const CB_SETCURSEL = &H14E
Const LB_SETCURSEL = &H186
Const LB_GETCURSEL = &H188
函数：
Public Function SetListIndex(lst As Control, ByVal NewIndex As Long) As 
Long
　
If TypeOf lst Is ListBox Then
Call SendMessage(lst.hWnd, LB_SETCURSEL, NewIndex, 0&)
SetListIndex = SendMessage(lst.hWnd, LB_GETCURSEL, NewIndex, 0&)
ElseIf TypeOf lst Is ComboBox Then
Call SendMessage(lst.hWnd, CB_SETCURSEL, NewIndex, 0&)
SetListIndex = SendMessage(lst.hWnd, CB_GETCURSEL, NewIndex, 0&)
End If
End Function