| WideStudio Application Builder User's Guide | WideStudio Index Table of contents

> ## Trace Debugger

> ### How to use the trace debugger

> Use the trace debugger to see the execution status of the event procedures executed. Fist of all, build the application, and select ((menu:Build >> Trace Execution)), then the trace dialog appears as follows:

> [Trace Dialog]
> Push [start] button on the trace dialog to start tracing. When an event procedure is activated, the following outputs are shown in the trace dialog. When you want to stop tracing, push [stop] button.

> [Trace output]
> You can find which event procedure has a bug when the application terminates abnormally without the following trace message:

>      function functionname( ) end

> where "functionname" is the name of the function of the event procedure.
> Further more, you can show a trace message from your application using WSGFtrace() function as follows (A):

>     #include <WScom.h>
>     #include <WSCfunctionList.h>
>     #include <WSCbase.h>
>     //-----------------------------------------------
>     //Function for the event procedure
>     //-----------------------------------------------
>     void btn_ep1(WSCbase* object){

>       object->setProperty(WSNlabelString,"Hello!");
>       WSCstring string;
>       string = "btn_ep1 called!!!!!\n";
>       WSGFtrace(string);                            //(A)
>     }
>     static WSCfunctionRegister  op("btn_ep1",(void*)btn_ep1);

> Note that the output by WSGFtrace() is enabled only when the tracing is turned on.

> [Trace output by the application]

Document Release 3.70 for WideStudio ver 3.70, May 2004

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Copyright(C) WideStudio Development Team, 1999-2004 | Last modified: May 25, 2004