Keyboard Simulation

[fadi]

Hello, how can i simulate a keyboard press. I mean i have lets say a string "Hello". i want to iterate through the characters of the string and simulate a keypress of the read character. So if a notepad is opened while execution and the its active, then hello will be printed on the notepad

 

[mutant]

This api will do what you want:
http://www.mentalis.org/apilist/keyb_event.shtml
Example(from the site, but modified to work in .net:

    Const VK_H = 72
    Const VK_E = 69
    Const VK_L = 76
    Const VK_O = 79
    Const KEYEVENTF_EXTENDEDKEY = &H1
    Const KEYEVENTF_KEYUP = &H2
    Private Declare Sub keybd_event Lib "user32.dll" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Integer, ByVal dwExtraInfo As Integer)

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.Show()
        Do While Me.Created
            keybd_event(VK_H, 0, 0, 0)   press H
            keybd_event(VK_H, 0, KEYEVENTF_KEYUP, 0)   release H
            keybd_event(VK_E, 0, 0, 0)  press E
            keybd_event(VK_E, 0, KEYEVENTF_KEYUP, 0)  release E
            keybd_event(VK_L, 0, 0, 0)  press L
            keybd_event(VK_L, 0, KEYEVENTF_KEYUP, 0)  release L
            keybd_event(VK_L, 0, 0, 0)  press L
            keybd_event(VK_L, 0, KEYEVENTF_KEYUP, 0)  release L
            keybd_event(VK_O, 0, 0, 0)  press O
            keybd_event(VK_O, 0, KEYEVENTF_KEYUP, 0)  release O
            Application.DoEvents()
        Loop
    End Sub

 

[dynamic_sysop]

if you just want the ability to open something like notepad and write to it when it opens you can do this :

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Shell("notepad.exe", AppWinStyle.NormalFocus)
        SendKeys.Send("hello") /// wont work with Process.Start , but will with Shell
    End Sub

 

[fadi]

thanks, the first code was the one im looking for,anyways the second was nice, it can be helpfull for the future