From 91dda33431ca82e6ee95633287b82ef586f072bd Mon Sep 17 00:00:00 2001
From: James Tabor <james.tabor@reactos.org>
Date: Sat, 29 Jul 2017 01:59:07 +0000
Subject: [PATCH] [User32] - Patch by MudHead : Combobox sends a message to the
 deselect the text when focus is lost. CORE-10266 #resolve

svn path=/trunk/; revision=75436
---
 reactos/sdk/include/reactos/undocuser.h      |  1 +
 reactos/win32ss/user/user32/controls/combo.c | 13 +++++++++++
 reactos/win32ss/user/user32/controls/edit.c  | 23 ++++++++++++++++++++
 3 files changed, 37 insertions(+)

diff --git a/reactos/sdk/include/reactos/undocuser.h b/reactos/sdk/include/reactos/undocuser.h
index 70f60f4a266..dea855684cf 100644
--- a/reactos/sdk/include/reactos/undocuser.h
+++ b/reactos/sdk/include/reactos/undocuser.h
@@ -46,6 +46,7 @@ extern "C" {
 #define WM_NCUAHDRAWFRAME   0x000000AF
 #define WM_SYSTIMER         0x00000118
 #define WM_LBTRACKPOINT     0x00000131
+#define WM_CBLOSTTEXTFOCUS  0x00000167
 #define LB_CARETON          0x000001a3
 #define LB_CARETOFF         0x000001a4
 #define MN_SETHMENU         0x000001e0
diff --git a/reactos/win32ss/user/user32/controls/combo.c b/reactos/win32ss/user/user32/controls/combo.c
index d12e6dcbd2d..8ec5bd99946 100644
--- a/reactos/win32ss/user/user32/controls/combo.c
+++ b/reactos/win32ss/user/user32/controls/combo.c
@@ -2260,6 +2260,19 @@ LRESULT WINAPI ComboWndProc_common( HWND hwnd, UINT message, WPARAM wParam, LPAR
                 NtUserInvalidateRect(lphc->self, &lphc->textRect, TRUE);
         }
         break;
+
+        case WM_CBLOSTTEXTFOCUS: /* undocumented message - deselects the text when focus is lost */
+        {
+           if (lphc->hWndEdit != NULL)
+           {
+               SendMessage(lphc->self, WM_LBUTTONUP, 0, 0xFFFFFFFF);
+               SendMessage(lphc->hWndEdit, EM_SETSEL, 0, 0);
+               lphc->wState &= ~CBF_FOCUSED;   
+               CB_NOTIFY(lphc, CBN_KILLFOCUS);
+           } 
+        }
+        return TRUE;
+
 #endif
 
 	default:
diff --git a/reactos/win32ss/user/user32/controls/edit.c b/reactos/win32ss/user/user32/controls/edit.c
index 99205864d9c..f62ac9263c3 100644
--- a/reactos/win32ss/user/user32/controls/edit.c
+++ b/reactos/win32ss/user/user32/controls/edit.c
@@ -3628,6 +3628,28 @@ static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key)
  */
 static LRESULT EDIT_WM_KillFocus(EDITSTATE *es)
 {
+#ifdef __REACTOS__
+	HWND hCombo;
+	LONG lStyles;
+
+	es->flags &= ~EF_FOCUSED;
+	DestroyCaret();
+	if(!(es->style & ES_NOHIDESEL))
+		EDIT_InvalidateText(es, es->selection_start, es->selection_end);
+
+	/* throw away left over scroll when we lose focus */
+	es->wheelDeltaRemainder = 0;
+
+	if (es->hwndListBox == NULL)
+		EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
+	else
+	{ /* send the undocumented WM_CBLOSTTEXTFOCUS message to combobox */
+		hCombo = GetParent(es->hwndSelf);
+		lStyles = GetWindowLong(hCombo, GWL_STYLE);
+		if ((lStyles & CBS_DROPDOWN) || (lStyles & CBS_SIMPLE))
+			SendMessage(hCombo, WM_CBLOSTTEXTFOCUS, 0, 0);
+	}
+#else
 	es->flags &= ~EF_FOCUSED;
 	DestroyCaret();
 	if(!(es->style & ES_NOHIDESEL))
@@ -3635,6 +3657,7 @@ static LRESULT EDIT_WM_KillFocus(EDITSTATE *es)
 	EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
 	/* throw away left over scroll when we lose focus */
 	es->wheelDeltaRemainder = 0;
+#endif
 	return 0;
 }