LV中如何调用API?

希仁

<>如题.</P>
<>例如现在要调用FindWindow这个API,在VB中声明如下ublic Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long</P>
<>Private Sub Command1_Click()
Dim Hwd As Long
Dim rtn As Long
Hwd = FindWindow("Progman", vbNullString)
rtn = ShowWindow(Hwd, SW_HIDE)
End Sub
</P>
<P>这个程序功能是实现按下Command1时将桌面图标隐藏,现在不明白Hwd = FindWindow("Progman", vbNullString)这一句中的vbNullString在LV中如何表达,我试过用Empty string constant, 空格都不行,那位朋友指点一下,不胜感激!</P>

strayzhp

<>有意思，查查VC的定义是如何的呢？</P>

cpubbs

用它的十六进制码行不行呢？看看在VB中它的十六进制是多少，然后在LV中用十六进制代替！