Changeset 17 for trunk/src/helpers/cnrh.c

Timestamp:

Dec 16, 2000, 10:09:53 PM (25 years ago)

Author:

umoeller

Message:

Miscellanous updates.

File:

• trunk/src/helpers/cnrh.c (modified) (3 diffs)

trunk/src/helpers/cnrh.c

@@ -1376 +1376 @@
 
 /*
+ *@@ cnrhIsChildOf:
+ *      returns TRUE only if precTest is a child record
+ *      of precParent in a tree view.
+ *
+ *@@added V0.9.7 (2000-12-13) [umoeller]
+ */
+
+BOOL cnrhIsChildOf(HWND hwndCnr,
+                   PRECORDCORE precTest,        // in: recc to test
+                   PRECORDCORE precParent)      // in: parent to test
+{
+    BOOL brc = FALSE;
+    if ((precTest) && (precParent))
+    {
+        PRECORDCORE precParentThis = precTest;
+
+        while (precParentThis)
+        {
+            // first call: get parent of precTest;
+            // subsequent calls: climb up
+            precParentThis = WinSendMsg(hwndCnr,
+                                        CM_QUERYRECORD,
+                                        precParentThis,
+                                        MPFROM2SHORT(CMA_PARENT,
+                                                     CMA_ITEMORDER));
+            if (precParentThis == (PRECORDCORE)-1)
+                break;
+            else
+                if (precParentThis == precParent)
+                {
+                    brc = TRUE;
+                    break;
+                }
+        }
+    }
+
+    return (brc);
+}
+
+/*
  *@@ cnrhForAllRecords:
  *      this monster function calls pfnwpCallback
@@ -1663 +1703 @@
  *
  *          Note: You must intercept CN_DROPNOTIFY in your window proc
- *          to clean up resources later.
+ *          to clean up resources later. For this, call:
+ *
+ +              DrgDeleteDraginfoStrHandles(pdrgInfo);
+ +              DrgFreeDraginfo(pdrgInfo);
  *
  *      2)  However, if (usNotifyCode == CN_INITDRAG), we will start
@@ -1669 +1712 @@
  *          will _not_ return until the object has been dropped or d'n'd
  *          has been cancelled. PM establishes another message loop
- *          internally for this.
+ *          internally for this. In this case, this function managed
+ *          cleanup automatically.
  *
  *      This function supports one single record core only. The following