Close Application

I called other application from my program, say Notepad, using ShellExecute function (winapi). I got the window (Notepad) handle from FindWindow function(winapi). But after that, I don't know how to close it. I couldn't use DestroyWindow because the application (Notepad) doesn't belong to my program. Can anyone suggest a way to close this application (Notepad)? Thanks a lot!!!

Try this:

VB Code:

Private Declare Function FindWindow Lib "user32" _
Alias "FindWindowA" (ByVal lpClassName As String, ByVal _
lpWindowName 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
 
Const WM_CLOSE = &H10
Const WM_DESTROY = &H2
 
Private Sub Command1_Click()
 
    hWin = FindWindow("notepad", vbNullString)
    If hWin <> 0 Then
        PostMessage hWin, WM_CLOSE, 0, 0
        PostMessage hWin, WM_DESTROY, 0, 0
    End If
    
End Sub

You should also post the WM_QUIT message as well.

Quote:

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Originally posted by benchin
I called other application from my program, say Notepad, using ShellExecute function (winapi). I got the window (Notepad) handle from FindWindow function(winapi). But after that, I don't know how to close it. I couldn't use DestroyWindow because the application (Notepad) doesn't belong to my program. Can anyone suggest a way to close this application (Notepad)? Thanks a lot!!!:)

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If you don't need to exit cleanly, you can kill the process using TerminateProcess.

TerminateProcess should usually be used as a last resort. You should call ExitProcess first, and if that doesn't work, then use TerminateProcess.

Quote:

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Originally posted by Megatron
TerminateProcess should usually be used as a last resort. You should call ExitProcess first, and if that doesn't work, then use TerminateProcess.

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ExitProcess can only be used to close your own program, not another program. People should really start testing out their own suggestions..