Simple Question About SendMessage

[microcephalic]

I am trying to figure out how to obtain the values needed to successfully execute a SendMessage Im using to try to close a dialog box.

My question is how do I figure out the value of my window (the hwnd value), the message I want to send (the wMsg value), and the remaing parameter values (wParam and lParam)?

  Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" _
(ByVal hwnd As Integer, _
ByVal wMsg As Integer, _
ByVal wParam As Integer, _
ByVal lParam As Long) As Integer

 

[PlausiblyDamp]

You could always try the FindWindow API

Declare Auto Function SendMessage Lib "user32.dll" (ByVal hWnd As IntPtr, _
  ByVal Msg As Integer, ByVal wParam As UIntPtr, _
  ByVal lParam As IntPtr) As IntPtr

Declare Auto Function FindWindow Lib "user32" (ByVal lpClassName As String, ByVal lpWindowName As String) As IntPtr

use like
Dim hWnd as IntPtr = FindWindow("", "<window caption here>")

and use the returned value as the first parameter to SendMessage. As to what you pass for the other 3 parameters depends on what you are trying to do. For a list of windows Messages you may want to Look on MSDN

 

[microcephalic]

Thanks, I found the name of the window now and checked out MSDN. It looks like I could use WM_COMMAND to help me "press" the save button on my dialog box. Would WM_COMMAND be the right choice to do something like this?

Thanks so much for your help!

 

[microcephalic]

Basically what I am trying to do is to simulate a left mouse click on the save button in a dialog box.

 

[VBInfinite]

I found this website: locohacker.net, they have source code for findwindow & sendmessage for paltalk. Go there if you;r interesting.