Closing a window via it's hwnd

[i00]

um how can i close a window by it's hwnd.. the only way i no is 2 use:

SendMessage TempWinHwnd, WM_CLOSE....

but this won't close explorer and folder windows..

Thanks in advance
Kris

[Joey_k29]

This code worked fine for me:

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
 
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
 
 
Private Sub Command1_Click()
'Close Explorer
PostMessage FindWindow("ExploreWClass", vbNullString), WM_CLOSE, 0, 0
 
End Sub
 
 
Private Sub Command2_Click()
'Close Folder Browsing
PostMessage FindWindow("CabinetWClass", vbNullString), WM_CLOSE, 0, 0
 
End Sub

Joe

[Megatron]

But make sure you specify a window title too, otherwise windows will close the first window in the list -- which may not the be the one you wanted to.

[snakeeyes1000]

I think it's

DestroyWindow Hwnd

I don't know it's declaration though, not sure what it does, but it seems to work fine.

[Megatron]

DestroyWindow does not work on an external thread, however I believe WM_DESTROY will.

[Joey_k29]

DestroyWindow is a much harsher way of shutting a program down; it sends the WM_DESTROY and WM_NCDESTROY messages which are almost equivalent to "end tasking" an application. This means time is not allocated for cleanup procedures and may end up in leaks. I would still advise using the code I posted(and as megatron said specify a title; I did not merely to demonstrate the simplest code that works).

Joe