visual studio .net debugging: I have a win project which is in a solution and have another win app in
another solution.

In the first win app, I use Process.Start() to launch the second one.

since the two win apps run in different processes, I cannot use
attach in menu Debug-->Processes for debug.

Is there any way to set breakpoint in the second app to debug it?

Thanks

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You mean that the second app exits before you can attach to it?
Or something else?

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There are various possible ways. For example:

- Introduce a delay at startup of the second application
(e.g. using Thread.Sleep or a message box), and use
Debug | Processes to attach to it during this timeout.

- Use hard-coded breakpoint (Debug.Break) in the second application
to break into the debugger when needed (VS.NET must be
registered as just-in-time debugger - check Tools | Options | Debugging |
Just-in-time | "Common Language Runtime")

- Use the approach descibed here to launch VS.NET automatically
when the second app is started:
http://msdn.microsoft.com/library/en-us/vsdebug/html/vxtskLaunchingDebuggerAutomatically.asp
(see the note about managed applications at the end)

Regards,
Oleg
[VC++ MVP]