Sending mouse clicks to other applications

How can I send mouse clicks to other applications? Please give me the exact syntax to send a LeftButtonClick, to the client area of another application

Code:

---

Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Const WM_LBUTTONDOWN = &H201
Private Const WM_LBUTTONUP = &H202
Private Const MK_LBUTTON = &H1

Private Sub Command1_Click()
    'Send a click to a window
    PostMessage HwndOfWindow, WM_LBUTTONDOWN, MK_LBUTTON, 0
    PostMessage HwndOfWindow, WM_LBUTTONUP, MK_LBUTTON, 0
End Sub

---

If your next question is how to get the hWnd of a Window, use the FindWindowEx API.

Code:

---

Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Const WM_LBUTTONDOWN = &H201
Private Const WM_LBUTTONUP = &H202
Private Const MK_LBUTTON = &H1

Private Sub Command1_Click()
   
    Dim HwndOfWindow As Long
    HwndOfWindow = FindWindowEx(0, 0, "SciCalc", "Calculator")
   
    If HwndOfWindow <> 0 Then
        'Click it
        PostMessage HwndOfWindow, WM_LBUTTONDOWN, MK_LBUTTON, 0
        PostMessage HwndOfWindow, WM_LBUTTONUP, MK_LBUTTON, 0
    End If
   
End Sub

---

how do u specify coordinates...

Code:

---

Me.Cursor.Position = New Point(x, y)

---

thats for moving the mouse to certain coordinates, not sure about clicking though.
i think i have a project on laptop that includes that, if i find it ill inform you.

You don't need to specify coordinates when using the "FindWindow" API...