<div>
try <br />
<br />
SendMessage(hWnd,0x0112,0x<wbr />F060,0);
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<div>
What is the difference? What WM message do those values correspond to?<br />
<br />
I also tried PostMessage(hWnd, WM_CLOSE, 0, 0) and it worked.<br />
<br />
What would be the best way and why?
</div>


What is the difference? What WM message do those values correspond to?

I also tried PostMessage(hWnd, WM_CLOSE, 0, 0) and it worked.

What would be the best way and why?

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<div class="content wysiwyg-content">
I'm trying to use the SendMessage function to send the WM_CLOSE message to an external process. Even though the call returns 0, nothing happens and the target window does not close.<br />
<br />
public const int WM_CLOSE = 0x10;<br />
[DllImport(&quot;user32&quot;, EntryPoint=&quot;SendMessageA&quot;)<wbr />]<br />
public static extern Int32 SendMessage(Int32 hwnd, Int32 wMsg, Int32 wParam, Int32 lParam);<br />
<br />
int result = WindowsEnumerator.SendMess<wbr />age (hWnd, WM_CLOSE, 0, 0);<br />
<br />
Is there something else I need to do to make the call valid for an external process?
</div>
</div>


I'm trying to use the SendMessage function to send the WM_CLOSE message to an external process. Even though the call returns 0, nothing happens and the target window does not close.

public const int WM_CLOSE = 0x10;
[DllImport("user32", EntryPoint="SendMessageA")]
public static extern Int32 SendMessage(Int32 hwnd, Int32 wMsg, Int32 wParam, Int32 lParam);

int result = WindowsEnumerator.SendMessage (hWnd, WM_CLOSE, 0, 0);

Is there something else I need to do to make the call valid for an external process?

SendMessage WM_CLOSE to another process

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