Question

vb模拟按下空格键

某个网页上有个按钮 当你点击这个按钮的时候，出现个对话框 内容类似于“您确认要退出吗？”然后下面有个确认按钮，和一个取消按钮。默认情况是你只要你安键盘上的空格建，就相当点击了确认按钮。。
我现在想知道，怎么让vb（最好用VB.net）模拟按下空格键。。。

Answer 1

用API函数，但是vb.net与vb6的API声明不一样的。代码如下：

Public Declare Sub keybd_event Lib "user32" Alias "keybd_event" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Integer, ByVal dwExtraInfo As Integer)
Const KEYEVENTF_KEYUP = &H2
Const VK_SPACE = &H20

Private Sub TextBox1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TextBox1.MouseClick
keybd_event(VK_SPACE, 0, 0, 0)
keybd_event(VK_SPACE, 0, KEYEVENTF_KEYUP, 0)
End Sub

如有问题，消息问我。我通常不看回答后的旧贴。

Answer 2

有两个方法

1、写一句SendKeys(" ")

2、用API，不过很麻烦：

Private Declare Sub keybd_event Lib "user32" Alias "keybd_event" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Integer, ByVal dwExtraInfo As Integer)
Const KEYEVENTF_KEYUP = &H2
Const VK_SPACE = &H20

'在需要的地方加入：
keybd_event VK_SPACE, 0, 0, 0
keybd_event VK_SPACE, 0, KEYEVENTF_KEYUP, 0

Answer 3

用sendkey()函数

Answer 4

sendkeys "[SPACE]"