为什么传不过去数值?

[nanyankaoran]

Private Const WM_SETTEXT = &HC
Private Const WM_GETTEXT = &HD
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

Private Sub Command2_Click()

Dim s As String
s = Text1.Text
SendMessage Me.hwnd, WM_SETTEXT, 0, s

End Sub
'为什么我一按按钮,form1.caption变成了空的,
'如果把TEXT1.TEXT=你好,怎能样用这个API 把它传到那?
'我知道貌岸然S这里要用地址传,但我不会,如何才能实现?

[lyserver]

将SendMessage Me.hWnd,WM_SETTEXT,0,s改成
SendMessage Me.hWnd,WM_SETTEXT,0,byval s就可以了.

[zzyong00]

Private Const WM_SETTEXT = &HC
Private Const WM_GETTEXT = &HD
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

Private Sub Command1_Click()

Dim s As String
s = StrConv(Text1.Text, vbFromUnicode)
SendMessage Me.hwnd, WM_SETTEXT, 0, ByVal StrPtr(s)

End Sub

[nanyankaoran]

我试了上面两位大侠的招法,但还是那样,其他人的高招呢?

[nanyankaoran]

我终于用我个人的办法解决了

[zzyong00]

好想知道你个人的高招啊
只是不知我的哪个为什么行啊，难道同样的电脑，差距就这么大吗？