[ROOT] I: Notification: Inbound Mail Failure

From: Magro Giuseppe (gmagro@seasoft.it)
Date: Thu Feb 22 2001 - 17:21:13 MET 

Sorry but Bajely Tony don't work here .
He has changed work.




Dear Rooters, I have tried to implement a example by Fons Rademakers, on how
to control the closing of a canvas window. My code segment looks like this:

bool Global::CanvasOpen(char* name, char* title, Int_t dx, Int_t dy)
{
   if (!rootapp) rootapp = new TApplication("EVA", 0, 0);
  
  c = new TCanvas(name,title,dx,dy);
 
/* have added this: */
  rc = (TRootCanvas*)c->GetCanvasImp();
  rc->Connect("CloseWindow()", 0, 0, "monitorClose()");   //Crashes here


 
  return 0;
}
 <<[ROOT] Problem with TRootCanvas::Connect>>

attached mail follows:

Dear Rooters, I have tried to implement a example by Fons Rademakers, on how to control the closing of a canvas window. My code segment looks like this: bool Global::CanvasOpen(char* name, char* title, Int_t dx, Int_t dy) { if (!rootapp) rootapp = new TApplication("EVA", 0, 0); c = new TCanvas(name,title,dx,dy); /* have added this: */ rc = (TRootCanvas*)c->GetCanvasImp(); rc->Connect("CloseWindow()", 0, 0, "monitorClose()"); // Crashes <file://Crshes> here return 0; } void monitorClose() { // todo } This was working fine without the rc->... statements. When I try to open a Canvas the application crashes at the indicated statement (rc is previously declared as TRootCanvas*). The message of the debugger is: Unhandeled access violation in evamfc2.exe (LIBCORE.DLL): 0xC0000005: Access Violation Note that I'm using root and mfc in a VC++6 environment. Any suggestions? Dimitris

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