Changeset 2015 for trunk/MagicSoft/Mars/mhist/MFillH.cc

Timestamp:

04/28/03 09:52:57 (22 years ago)

Author:

tbretz

Message:

*** empty log message ***

File:

• trunk/MagicSoft/Mars/mhist/MFillH.cc (modified) (2 diffs)

trunk/MagicSoft/Mars/mhist/MFillH.cc

@@ -326 +326 @@
 }
 
+// --------------------------------------------------------------------------
+//
+// Creates a new tab in a status display with the name of the MH class,
+// if fDisplay is set and the MH-class overwrites the Draw function
+//
 Bool_t MFillH::DrawToDisplay()
 {
+    fCanvas = NULL;
+
     if (!fDisplay)
+        return kTRUE;
+
+    if (!fH->OverwritesDraw())
         return kTRUE;
 
@@ -485 +495 @@
     fH->SetReadyToSave();
 
-    if (fDisplay)
+    //
+    // Check whether fDisplay has previously been used (fCanvas)
+    // and fDisplay is still open.
+    //
+    if (fCanvas && fDisplay)
     {
         fCanvas->cd();