From cc0fc0d35c230c3e9fd7fefb9d6534d5b0accdd5 Mon Sep 17 00:00:00 2001
From: Filip Navara <filip.navara@gmail.com>
Date: Tue, 7 Jun 2005 16:54:15 +0000
Subject: [PATCH] Implementation of DragDetect. Based on Wine code (C) 1993,
 1994 Alexandre Julliard.

svn path=/trunk/; revision=15831
---
 reactos/lib/user32/windows/input.c | 39 ++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/reactos/lib/user32/windows/input.c b/reactos/lib/user32/windows/input.c
index d041c8ef022..35be047e19d 100644
--- a/reactos/lib/user32/windows/input.c
+++ b/reactos/lib/user32/windows/input.c
@@ -44,7 +44,46 @@ DragDetect(
   HWND hWnd,
   POINT pt)
 {
+#if 0
   return NtUserDragDetect(hWnd, pt.x, pt.y);
+#else
+  MSG msg;
+  RECT rect;
+  POINT tmp;
+  ULONG dx = NtUserGetSystemMetrics(SM_CXDRAG);
+  ULONG dy = NtUserGetSystemMetrics(SM_CYDRAG);
+
+  rect.left = pt.x - dx;
+  rect.right = pt.x + dx;
+  rect.top = pt.y - dy;
+  rect.bottom = pt.y + dy;
+
+  SetCapture(hWnd);
+
+  for (;;)
+  {
+    while (PeekMessageW(&msg, 0, WM_MOUSEFIRST, WM_MOUSELAST, PM_REMOVE))
+    {
+      if (msg.message == WM_LBUTTONUP)
+      {
+        ReleaseCapture();
+        return 0;
+      }
+      if (msg.message == WM_MOUSEMOVE)
+      {
+        tmp.x = LOWORD(msg.lParam);
+        tmp.y = HIWORD(msg.lParam);
+        if (!PtInRect(&rect, tmp))
+        {
+          ReleaseCapture();
+          return 1;
+        }
+      }
+    }
+    WaitMessage();
+  }
+  return 0;
+#endif
 }