Question message to another program

[Zexor]

how can i send a message to a different program to press a button on it without me doing it with my mouse?

 

[jmcilhinney]

You would need to use the Windows API for that. You would need to call the FindWindow, FindWindowEx and SendMessage functions. This is a common request so a search will find existing examples. It's the BM_CLICK message that you'll want to send.

 

[Zexor]

would this send a click to the window at 678,512 of the window?

       Const WM_LBUTTONDOWN As Long = &H201
       Const WM_LBUTTONUP As Long = &H202

       SetForegroundWindow(hwnd)

       SendMessage(hwnd, WM_LBUTTONDOWN, 0&, MakeDWord(678, 512))
       SendMessage(hwnd, WM_LBUTTONUP, 0&, MakeDWord(678, 512))


    Private Function MakeDWord(ByVal LoWord As Integer, ByVal HiWord As Integer) As Long
        MakeDWord = (HiWord * &H10000) Or (LoWord And &HFFFF&)
    End Function

the window come to foreground and then nothing happen.