comctl32/tooltips: Fix TTM_GETMARGIN/TTM_SETMARGIN handling.

dlls/comctl32/tests/tooltips.c

@@ -1010,6 +1010,43 @@ static void test_setinfo(void)
    DestroyWindow(parent2);
 }
 
+static void test_margin(void)
+{
+    RECT r, r1;
+    HWND hwnd;
+    DWORD ret;
+
+    hwnd = CreateWindowExA(0, TOOLTIPS_CLASSA, NULL, 0,
+                           10, 10, 300, 100,
+                           NULL, NULL, NULL, 0);
+    ok(hwnd != NULL, "failed to create tooltip wnd\n");
+
+    ret = SendMessageA(hwnd, TTM_SETMARGIN, 0, 0);
+    ok(!ret, "got %d\n", ret);
+
+    SetRect(&r, -1, -1, 1, 1);
+    ret = SendMessageA(hwnd, TTM_SETMARGIN, 0, (LPARAM)&r);
+    ok(!ret, "got %d\n", ret);
+
+    SetRect(&r1, 0, 0, 0, 0);
+    ret = SendMessageA(hwnd, TTM_GETMARGIN, 0, (LPARAM)&r1);
+    ok(!ret, "got %d\n", ret);
+    ok(EqualRect(&r, &r1), "got %s, was %s\n", wine_dbgstr_rect(&r1), wine_dbgstr_rect(&r));
+
+    ret = SendMessageA(hwnd, TTM_SETMARGIN, 0, 0);
+    ok(!ret, "got %d\n", ret);
+
+    SetRect(&r1, 0, 0, 0, 0);
+    ret = SendMessageA(hwnd, TTM_GETMARGIN, 0, (LPARAM)&r1);
+    ok(!ret, "got %d\n", ret);
+    ok(EqualRect(&r, &r1), "got %s, was %s\n", wine_dbgstr_rect(&r1), wine_dbgstr_rect(&r));
+
+    ret = SendMessageA(hwnd, TTM_GETMARGIN, 0, 0);
+    ok(!ret, "got %d\n", ret);
+
+    DestroyWindow(hwnd);
+}
+
 START_TEST(tooltips)
 {
     InitCommonControls();
@@ -1022,4 +1059,5 @@ START_TEST(tooltips)
     test_longtextW();
     test_track();
     test_setinfo();
+    test_margin();
 }

dlls/comctl32/tooltips.c

@@ -1323,12 +1323,10 @@ TOOLTIPS_GetDelayTime (const TOOLTIPS_INFO *infoPtr, DWORD duration)
 
 
 static LRESULT
-TOOLTIPS_GetMargin (const TOOLTIPS_INFO *infoPtr, LPRECT lpRect)
+TOOLTIPS_GetMargin (const TOOLTIPS_INFO *infoPtr, RECT *rect)
 {
-    lpRect->left   = infoPtr->rcMargin.left;
-    lpRect->right  = infoPtr->rcMargin.right;
-    lpRect->bottom = infoPtr->rcMargin.bottom;
-    lpRect->top    = infoPtr->rcMargin.top;
+    if (rect)
+        *rect = infoPtr->rcMargin;
 
     return 0;
 }
@@ -1600,12 +1598,10 @@ TOOLTIPS_SetDelayTime (TOOLTIPS_INFO *infoPtr, DWORD duration, INT nTime)
 
 
 static LRESULT
-TOOLTIPS_SetMargin (TOOLTIPS_INFO *infoPtr, const RECT *lpRect)
+TOOLTIPS_SetMargin (TOOLTIPS_INFO *infoPtr, const RECT *rect)
 {
-    infoPtr->rcMargin.left   = lpRect->left;
-    infoPtr->rcMargin.right  = lpRect->right;
-    infoPtr->rcMargin.bottom = lpRect->bottom;
-    infoPtr->rcMargin.top    = lpRect->top;
+    if (rect)
+        infoPtr->rcMargin = *rect;
 
     return 0;
 }