From: Andy Spencer <andy753421@gmail.com>
Date: Thu, 13 Oct 2011 08:14:23 +0000 (+0000)
Subject: Try to improve focus speed
X-Git-Url: http://pileus.org/git/?p=wmpus;a=commitdiff_plain;h=a2379eee427e03e718b5307a6bd290453a058aca

Try to improve focus speed

(this probably doesn't do anything)
---

diff --git a/sys-win32.c b/sys-win32.c
index 8513bca..5d0550a 100644
--- a/sys-win32.c
+++ b/sys-win32.c
@@ -342,16 +342,21 @@ void sys_focus(win_t *win)
 	/* Windows prevents a thread from using SetForegroundInput under
 	 * certain circumstances and instead flashes the windows toolbar icon.
 	 * Attaching the thread input queues avoids this behavior */
-	DWORD oldId = GetWindowThreadProcessId(GetForegroundWindow(), NULL);
+	HWND  fgWin = GetForegroundWindow();
+	if (fgWin == win->sys->hwnd)
+		return; // already focused
+	DWORD oldId = GetWindowThreadProcessId(fgWin, NULL);
 	DWORD newId = GetCurrentThreadId();
-	AttachThreadInput(oldId, newId, TRUE);
+	if (oldId != newId)
+		AttachThreadInput(oldId, newId, TRUE);
 
 	HWND next = GetWindow(win->sys->hwnd, GW_HWNDNEXT);
 	SetWindowPos(win->sys->hwnd, NULL, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 	if (next)
 		SetWindowPos(win->sys->hwnd, next, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 
-	AttachThreadInput(oldId, newId, FALSE);
+	if (oldId != newId)
+		AttachThreadInput(oldId, newId, FALSE);
 }
 
 void sys_show(win_t *win, state_t state)