[PATCH] comctl32: Handle NULL text in COMBOEX_NotifyEndEdit().

[Haoyang Chen]

Signed-off-by: Haoyang Chen <chenhaoyang at uniontech.com>
---
 dlls/comctl32/comboex.c     |  4 ++++
 dlls/comctl32/tests/combo.c | 28 +++++++++++++++-------------
 2 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/dlls/comctl32/comboex.c b/dlls/comctl32/comboex.c
index 0f7e46949e4..1642270c47f 100644
--- a/dlls/comctl32/comboex.c
+++ b/dlls/comctl32/comboex.c
@@ -223,6 +223,10 @@ static INT COMBOEX_NotifyEndEdit (const COMBOEX_INFO *infoPtr, NMCBEENDEDITW *ne
 {
     /* Change the Text item from Unicode to ANSI if necessary for NOTIFY */
     if (infoPtr->NtfUnicode) {
+        if (!wstr) {
+            neew->szText[0] = 0;
+            return COMBOEX_Notify (infoPtr, CBEN_ENDEDITW, &neew->hdr);
+        }
 	lstrcpynW(neew->szText, wstr, CBEMAXSTRLEN);
 	return COMBOEX_Notify (infoPtr, CBEN_ENDEDITW, &neew->hdr);
     } else {
diff --git a/dlls/comctl32/tests/combo.c b/dlls/comctl32/tests/combo.c
index 69cc7680827..363fc2d98bf 100644
--- a/dlls/comctl32/tests/combo.c
+++ b/dlls/comctl32/tests/combo.c
@@ -46,7 +46,7 @@ static struct msg_sequence *sequences[NUM_MSG_SEQUENCES];
 
 static HWND hComboExParentWnd, hMainWnd;
 static HINSTANCE hMainHinst;
-static const char ComboExTestClass[] = "ComboExTestClass";
+static const WCHAR ComboExTestClass[] = L"ComboExTestClass";
 
 static HBRUSH brush_red;
 
@@ -67,7 +67,7 @@ static void get_combobox_info(HWND hwnd, COMBOBOXINFO *info)
 }
 
 static HWND createComboEx(DWORD style) {
-   return CreateWindowExA(0, WC_COMBOBOXEXA, NULL, style, 0, 0, 300, 300,
+   return CreateWindowExW(0, WC_COMBOBOXEXW, NULL, style, 0, 0, 300, 300,
             hComboExParentWnd, NULL, hMainHinst, NULL);
 }
 
@@ -263,7 +263,7 @@ static void test_comboex_WM_LBUTTONDOWN(void)
     WCHAR buffer[3];
     static const UINT choices[] = {8,9,10,11,12,14,16,18,20,22,24,26,28,36,48,72};
 
-    hComboEx = CreateWindowExA(0, WC_COMBOBOXEXA, NULL,
+    hComboEx = CreateWindowExW(0, WC_COMBOBOXEXW, NULL,
             WS_VISIBLE|WS_CHILD|CBS_DROPDOWN, 0, 0, 200, 150,
             hComboExParentWnd, NULL, hMainHinst, NULL);
 
@@ -281,8 +281,10 @@ static void test_comboex_WM_LBUTTONDOWN(void)
            "Failed to add item %d\n", i);
     }
 
-    hCombo = (HWND)SendMessageA(hComboEx, CBEM_GETCOMBOCONTROL, 0, 0);
-    hEdit = (HWND)SendMessageA(hComboEx, CBEM_GETEDITCONTROL, 0, 0);
+    addItem(hComboEx, 4, NULL);
+
+    hCombo = (HWND)SendMessageW(hComboEx, CBEM_GETCOMBOCONTROL, 0, 0);
+    hEdit = (HWND)SendMessageW(hComboEx, CBEM_GETEDITCONTROL, 0, 0);
 
     get_combobox_info(hCombo, &cbInfo);
     hList = cbInfo.hwndList;
@@ -552,7 +554,7 @@ static void init_functions(void)
 
 static BOOL init(void)
 {
-    WNDCLASSA wc;
+    WNDCLASSW wc;
 
     wc.style = CS_HREDRAW | CS_VREDRAW;
     wc.cbClsExtra = 0;
@@ -564,18 +566,18 @@ static BOOL init(void)
     wc.lpszMenuName = NULL;
     wc.lpszClassName = ComboExTestClass;
     wc.lpfnWndProc = ComboExTestWndProc;
-    RegisterClassA(&wc);
+    RegisterClassW(&wc);
 
     brush_red = CreateSolidBrush(RGB(255, 0, 0));
 
-    hMainWnd = CreateWindowA(WC_STATICA, "Test", WS_OVERLAPPEDWINDOW, 10, 10, 300, 300, NULL, NULL, NULL, 0);
+    hMainWnd = CreateWindowW(WC_STATICW, L"Test", WS_OVERLAPPEDWINDOW, 10, 10, 300, 300, NULL, NULL, NULL, 0);
     ShowWindow(hMainWnd, SW_SHOW);
 
-    hComboExParentWnd = CreateWindowExA(0, ComboExTestClass, "ComboEx test", WS_OVERLAPPEDWINDOW|WS_VISIBLE,
-      CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, GetModuleHandleA(NULL), 0);
+    hComboExParentWnd = CreateWindowExW(0, ComboExTestClass, L"ComboEx test", WS_OVERLAPPEDWINDOW|WS_VISIBLE,
+      CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, GetModuleHandleW(NULL), 0);
     ok(hComboExParentWnd != NULL, "failed to create parent window\n");
 
-    hMainHinst = GetModuleHandleA(NULL);
+    hMainHinst = GetModuleHandleW(NULL);
 
     return hComboExParentWnd != NULL;
 }
@@ -584,14 +586,14 @@ static void cleanup(void)
 {
     MSG msg;
     
-    PostMessageA(hComboExParentWnd, WM_CLOSE, 0, 0);
+    PostMessageW(hComboExParentWnd, WM_CLOSE, 0, 0);
     while (GetMessageA(&msg,0,0,0)) {
         TranslateMessage(&msg);
         DispatchMessageA(&msg);
     }
     
     DestroyWindow(hComboExParentWnd);
-    UnregisterClassA(ComboExTestClass, GetModuleHandleA(NULL));
+    UnregisterClassW(ComboExTestClass, GetModuleHandleA(NULL));
 
     DestroyWindow(hMainWnd);
     DeleteObject(brush_red);
-- 
2.20.1