Sendmessage and hotkeys

[Sweetve13]

I need some guidance! I'm using sendmessage to send keystrokes to another application that is not active. This part works just great. But I am not able to send hotkeys. Say for example. I'm sending keystrokes to notepad and I want the date. One can do this by clicking Edit>Time/Date or sending Alt then E then D. How could I achieve this? Thanks!

 

p.s. I've tried using WM_KEYDOWN, WM_KEYUP, WM_COMMAND to no prevail. I'm sent the commands both to the handle for the specific control and the application itself (hwnd and x) and still no success.

 

This is what I'm using to send the keys so far (sending keys works, just not hotkeys):

Private Declare Ansi Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hwnd As Integer, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As String) As Integer
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Integer, ByVal hWnd2 As Integer, ByVal lpsz1 As String, ByVal lpsz2 As String) As Integer
Private Declare Function FindWindow Lib "user32.dll" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Integer

Public Const WM_CHAR = &H102

System.Diagnostics.Process.Start("C:\WINNT\system32\notepad.exe")
Dim hwnd As Integer = FindWindow(vbNullString, "Untitled - NotePad")
Dim x As Integer = FindWindowEx(hwnd, 0, "Edit", vbNullString)
SendMessage(x, WM_CHAR, Keys.C, 0)
SendMessage(x, WM_CHAR, Keys.L, 0)

Edited May 24, 2006 by PlausiblyDamp

[Sweetve13]

Found a way to 'click' on the menu items. The code is as follows:

 

 
Private Declare Ansi Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hwnd As Integer, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As String) As Integer
   Private Declare Function FindWindow Lib "user32.dll" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Integer
   Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Integer, ByVal hWnd2 As Integer, ByVal lpsz1 As String, ByVal lpsz2 As String) As Integer
   Private Declare Function GetMenu Lib "user32" Alias "GetMenu" (ByVal hwnd As Integer) As Integer
   Private Declare Function GetSubMenu Lib "user32" Alias "GetSubMenu" (ByVal hMenu As Integer, ByVal nPos As Integer) As Integer
   Private Declare Function GetMenuItemID Lib "user32" Alias "GetMenuItemID" (ByVal hMenu As Integer, ByVal nPos As Integer) As Integer

   Private Const WM_COMMAND = &H111

       Dim hwnd, hWndMenu, hWndSubMenu, MenuItem As Integer
       hwnd = FindWindow(vbNullString, "Untitled - Notepad")
       hWndMenu = GetMenu(hwnd)                    ' Get handle to Menu Items
       hWndSubMenu = GetSubMenu(hWndMenu, 0)      ' Get handle to �File� submenu
       MenuItem = GetMenuItemID(hWndSubMenu, 1)    ' Get menuID for the �Open�
       SendMessage(hwnd, WM_COMMAND, MenuItem, vbNullString)     ' Click �Open� menuitem