How to activate ReportMemoryLeaksOnShutdown only in debug mode?

Question

I need to activate the ReportMemoryLeaksOnShutdown functionality to report the memory leaks of my application, but only under debug mode (when the Delphi IDE is

Answer 1

try using the DebugHook variable

ReportMemoryLeaksOnShutdown:=DebugHook<>0;

Answer 2

If you mean "debug mode" as compiled using the Debug build configuration (D2007+), you'll have the DEBUG symbol defined, so you can activate the ReportMemoryLeaksOnShutdown even when running oustide the debugger with:

{$IFDEF DEBUG}
  ReportMemoryLeaksOnShutdown := True;
{$ENDIF}

If you want to run only if the debugger is present, look at RRUZ answer

Answer 3

I usually use the IsDebuggerPresent API function and also surround it with a DEBUG symbol check so the code doesn't end up in release builds:

{$IFDEF DEBUG}   
  ReportMemoryLeaksOnShutDown := IsDebuggerPresent();
{$ENDIF}

The function should already be declared in the Windows unit, if you're not using an ancient version of Delphi and works on Windows 2000 and newer.